TY  - JOUR
AU  - Radmilović-Rađenović, Marija
AU  - Beličev, Petar
AU  - Rađenović, Branislav
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=1451-39941800003R
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8118
AB  - Electron field emission limiting the accelerating gradient in superconducting cavities remains the dominant setback in cavity production. The need to understand and control the field emission has become increasingly important because of the prospect of using high-gradient structures in linear colliders. Since building an accelerator structure is a complicated and cosily process, elimination of unnecessary steps has priority. In this paper an analysis of the influence of the enhanced field emission in superconducting radio frequency cavity together with modal field calculations by using COMSOL finite elements package has been presented. The obtained results reveal that the electric field required for the field emission is generated in the cavity irises. The imperfection of the cavity surface leading to very high fields is modelled by a simple cone. The estimated value of the enhancement factor for the cone lip of around 4 is in agood agreement with the data found in the literature. In addition, from the slopes and the intercepts of the Fowler-Nordheim plots, a dependence of the enhancement factor and the effective area on the work function has been estimated. © 2018; Vinca Inst Nuclear Sci. All rights reserved.
T2  - Nuclear Technology and Radiation Protection
T1  - The effect of the enhanced field emission on the characteristics of the superconducting radio frequency cavities
VL  - 33
IS  - 4
SP  - 341
EP  - 346
DO  - 10.2298/NTRP180427003R
ER  - 

@article{
author = "Radmilović-Rađenović, Marija and Beličev, Petar and Rađenović, Branislav",
year = "2018",
abstract = "Electron field emission limiting the accelerating gradient in superconducting cavities remains the dominant setback in cavity production. The need to understand and control the field emission has become increasingly important because of the prospect of using high-gradient structures in linear colliders. Since building an accelerator structure is a complicated and cosily process, elimination of unnecessary steps has priority. In this paper an analysis of the influence of the enhanced field emission in superconducting radio frequency cavity together with modal field calculations by using COMSOL finite elements package has been presented. The obtained results reveal that the electric field required for the field emission is generated in the cavity irises. The imperfection of the cavity surface leading to very high fields is modelled by a simple cone. The estimated value of the enhancement factor for the cone lip of around 4 is in agood agreement with the data found in the literature. In addition, from the slopes and the intercepts of the Fowler-Nordheim plots, a dependence of the enhancement factor and the effective area on the work function has been estimated. © 2018; Vinca Inst Nuclear Sci. All rights reserved.",
journal = "Nuclear Technology and Radiation Protection",
title = "The effect of the enhanced field emission on the characteristics of the superconducting radio frequency cavities",
volume = "33",
number = "4",
pages = "341-346",
doi = "10.2298/NTRP180427003R"
}

Radmilović-Rađenović, M., Beličev, P.,& Rađenović, B.. (2018). The effect of the enhanced field emission on the characteristics of the superconducting radio frequency cavities. in Nuclear Technology and Radiation Protection, 33(4), 341-346.
https://doi.org/10.2298/NTRP180427003R

Radmilović-Rađenović M, Beličev P, Rađenović B. The effect of the enhanced field emission on the characteristics of the superconducting radio frequency cavities. in Nuclear Technology and Radiation Protection. 2018;33(4):341-346.
doi:10.2298/NTRP180427003R .

Radmilović-Rađenović, Marija, Beličev, Petar, Rađenović, Branislav, "The effect of the enhanced field emission on the characteristics of the superconducting radio frequency cavities" in Nuclear Technology and Radiation Protection, 33, no. 4 (2018):341-346,
https://doi.org/10.2298/NTRP180427003R . .

TY  - JOUR
AU  - Radmilović-Rađenović, Marija D.
AU  - Beličev, Petar
AU  - Rađenović, Branislav M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1642
AB  - In this paper a one-dimensional Particle-in-Cell/Monte Carlo collision code has been used in order to study characteristics of multipactors. For multipactor to occur each electron striking the surface must generate more than one secondary on average. The ratio of primary to secondary electrons is given by the secondary emission yield. For this study, calculations were carried out by using Sternglass model that includes energy dependence of the secondary emission yield. The obtained simulation results for the pressure dependence of the breakdown time follow the scaling law. Number of electrons increases in time, while their mean energy decreases. Since secondary electron emission at the cavity surface plays an important role, simulation results, presented here, can help cavity designers predict multipacting issues before fabrication.
T2  - Nuclear technology and radiation protection
T1  - Study of Multipactor Effect with Applications to Superconductive Radiofrequency Cavities
VL  - 32
IS  - 2
SP  - 115
EP  - 119
DO  - 10.2298/NTRP1702115R
ER  - 

@article{
author = "Radmilović-Rađenović, Marija D. and Beličev, Petar and Rađenović, Branislav M.",
year = "2017",
abstract = "In this paper a one-dimensional Particle-in-Cell/Monte Carlo collision code has been used in order to study characteristics of multipactors. For multipactor to occur each electron striking the surface must generate more than one secondary on average. The ratio of primary to secondary electrons is given by the secondary emission yield. For this study, calculations were carried out by using Sternglass model that includes energy dependence of the secondary emission yield. The obtained simulation results for the pressure dependence of the breakdown time follow the scaling law. Number of electrons increases in time, while their mean energy decreases. Since secondary electron emission at the cavity surface plays an important role, simulation results, presented here, can help cavity designers predict multipacting issues before fabrication.",
journal = "Nuclear technology and radiation protection",
title = "Study of Multipactor Effect with Applications to Superconductive Radiofrequency Cavities",
volume = "32",
number = "2",
pages = "115-119",
doi = "10.2298/NTRP1702115R"
}

Radmilović-Rađenović, M. D., Beličev, P.,& Rađenović, B. M.. (2017). Study of Multipactor Effect with Applications to Superconductive Radiofrequency Cavities. in Nuclear technology and radiation protection, 32(2), 115-119.
https://doi.org/10.2298/NTRP1702115R

Radmilović-Rađenović MD, Beličev P, Rađenović BM. Study of Multipactor Effect with Applications to Superconductive Radiofrequency Cavities. in Nuclear technology and radiation protection. 2017;32(2):115-119.
doi:10.2298/NTRP1702115R .

Radmilović-Rađenović, Marija D., Beličev, Petar, Rađenović, Branislav M., "Study of Multipactor Effect with Applications to Superconductive Radiofrequency Cavities" in Nuclear technology and radiation protection, 32, no. 2 (2017):115-119,
https://doi.org/10.2298/NTRP1702115R . .

TY  - JOUR
AU  - Rađenović, Branislav M.
AU  - Radmilović-Rađenović, Marija
AU  - Beličev, Petar
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1544
AB  - In this paper the eigenmodes of finite length microring resonator arrays have been systematically studied, both analytically using temporal coupled mode theory (CMT), and numerically using two-dimensional finite element method (FEM). The method for obtaining the values of parameters appearing in simplified CMT model using results of FEM calculations is presented. Calculations were carried out by COMSOL FEM packages for a wide range of distances between the rings. The obtained results reveal that the rotational degeneracy is preserved for a wide range of interrings distances. It is shown how the eigenvalue spectrum depends on the number of cavities in the system. The differences for the cases of odd and even numbers of rings, and its implications on actual applications, are discussed in details. The central branch appearing in odd-number arrays plays significant role for the delay-lines and optical buffering applications. Based on the first order perturbation theory, an analytical expressions for the eigenfrequencies of arbitrary (finite) length linear array of microring resonators are derived. The analytical expressions describing eigenfrequencies are useful for determining positions of the maxima in transfer characteristics in microring arrays with external buses.
T2  - Optical and Quantum Electronics
T1  - Eigenmodes of finite length silicon-on-insulator microring resonator arrays
VL  - 49
IS  - 4
DO  - 10.1007/s11082-017-0984-9
ER  - 

@article{
author = "Rađenović, Branislav M. and Radmilović-Rađenović, Marija and Beličev, Petar",
year = "2017",
abstract = "In this paper the eigenmodes of finite length microring resonator arrays have been systematically studied, both analytically using temporal coupled mode theory (CMT), and numerically using two-dimensional finite element method (FEM). The method for obtaining the values of parameters appearing in simplified CMT model using results of FEM calculations is presented. Calculations were carried out by COMSOL FEM packages for a wide range of distances between the rings. The obtained results reveal that the rotational degeneracy is preserved for a wide range of interrings distances. It is shown how the eigenvalue spectrum depends on the number of cavities in the system. The differences for the cases of odd and even numbers of rings, and its implications on actual applications, are discussed in details. The central branch appearing in odd-number arrays plays significant role for the delay-lines and optical buffering applications. Based on the first order perturbation theory, an analytical expressions for the eigenfrequencies of arbitrary (finite) length linear array of microring resonators are derived. The analytical expressions describing eigenfrequencies are useful for determining positions of the maxima in transfer characteristics in microring arrays with external buses.",
journal = "Optical and Quantum Electronics",
title = "Eigenmodes of finite length silicon-on-insulator microring resonator arrays",
volume = "49",
number = "4",
doi = "10.1007/s11082-017-0984-9"
}

Rađenović, B. M., Radmilović-Rađenović, M.,& Beličev, P.. (2017). Eigenmodes of finite length silicon-on-insulator microring resonator arrays. in Optical and Quantum Electronics, 49(4).
https://doi.org/10.1007/s11082-017-0984-9

Rađenović BM, Radmilović-Rađenović M, Beličev P. Eigenmodes of finite length silicon-on-insulator microring resonator arrays. in Optical and Quantum Electronics. 2017;49(4).
doi:10.1007/s11082-017-0984-9 .

Rađenović, Branislav M., Radmilović-Rađenović, Marija, Beličev, Petar, "Eigenmodes of finite length silicon-on-insulator microring resonator arrays" in Optical and Quantum Electronics, 49, no. 4 (2017),
https://doi.org/10.1007/s11082-017-0984-9 . .

TY  - CONF
AU  - Raičević, Nevena
AU  - Ivanović, Marija D.
AU  - Beličev, Petar
AU  - Petrović, Jovana S.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7099
AB  - Here, we present a method of respiratory volumes monitoring using a single fiber-grating sensor of bending. Measurements are conducted using simple monochromatic interrogation scheme that relies on a photodiode measurement of the power transmitted through a long period grating (LPG) sensor at fixed wavelength. Good sensor accuracy in measurements of tidal and minute respiratory volumes for different types of breathing is achieved.
C3  - Journal of Physics: Conference Series
T1  - Monitoring of respiratory volumes by an long period grating sensor of bending
VL  - 682
DO  - 10.1088/1742-6596/682/1/012008
ER  - 

@conference{
author = "Raičević, Nevena and Ivanović, Marija D. and Beličev, Petar and Petrović, Jovana S.",
year = "2016",
abstract = "Here, we present a method of respiratory volumes monitoring using a single fiber-grating sensor of bending. Measurements are conducted using simple monochromatic interrogation scheme that relies on a photodiode measurement of the power transmitted through a long period grating (LPG) sensor at fixed wavelength. Good sensor accuracy in measurements of tidal and minute respiratory volumes for different types of breathing is achieved.",
journal = "Journal of Physics: Conference Series",
title = "Monitoring of respiratory volumes by an long period grating sensor of bending",
volume = "682",
doi = "10.1088/1742-6596/682/1/012008"
}

Raičević, N., Ivanović, M. D., Beličev, P.,& Petrović, J. S.. (2016). Monitoring of respiratory volumes by an long period grating sensor of bending. in Journal of Physics: Conference Series, 682.
https://doi.org/10.1088/1742-6596/682/1/012008

Raičević N, Ivanović MD, Beličev P, Petrović JS. Monitoring of respiratory volumes by an long period grating sensor of bending. in Journal of Physics: Conference Series. 2016;682.
doi:10.1088/1742-6596/682/1/012008 .

Raičević, Nevena, Ivanović, Marija D., Beličev, Petar, Petrović, Jovana S., "Monitoring of respiratory volumes by an long period grating sensor of bending" in Journal of Physics: Conference Series, 682 (2016),
https://doi.org/10.1088/1742-6596/682/1/012008 . .

TY  - JOUR
AU  - Telečki, Igor N.
AU  - Beličev, Petar
AU  - Petrović, Srđan M.
AU  - Nešković, Nebojša B.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/938
AB  - This is a study on the properties of a square electrostatic rainbow lens doublet. The said optical element consists of two square electrostatic rainbow lenses with the second lens axially rotated for 45 degrees with respect to the first one. The propagation of a proton beam with a kinetic energy of 10 keV through the doublet is in the focus of our analysis. The potential of the electrodes of both lenses is 2 kV. The electrostatic potential and the electric field components of the lens doublet are calculated using a 3-D computer code based on the method of moments. Spatial and angular distributions of protons propagating through the lens doublet, as well as the parameters defining beam quality, are investigated. As in the case of the single square electrostatic rainbow lens, the evolution of these distributions is determined by the evolution of corresponding rainbow lines, generated by the use of the theory of crystal rainbows. Our study shows that a beam core in the shape of a cusped square is formed by the spatial rainbow line that appears first. This rainbow line occurs during proton propagation through the first lens. The beam core retains the cusped square shape during the propagation through the second lens. The electrostatic field of the second lens causes the appearance of an additional spatial rainbow line, which encompasses the beam core and defines the outer border of the beam. This rainbow line constitutes the main difference between the cases of the lens doublet and a single lens.
T2  - Nuclear technology and radiation protection
T1  - Focusing Properties of a Square Electrostatic Rainbow Lens Doublet
VL  - 30
IS  - 4
SP  - 239
EP  - 248
DO  - 10.2298/NTRP1504239T
ER  - 

@article{
author = "Telečki, Igor N. and Beličev, Petar and Petrović, Srđan M. and Nešković, Nebojša B.",
year = "2015",
abstract = "This is a study on the properties of a square electrostatic rainbow lens doublet. The said optical element consists of two square electrostatic rainbow lenses with the second lens axially rotated for 45 degrees with respect to the first one. The propagation of a proton beam with a kinetic energy of 10 keV through the doublet is in the focus of our analysis. The potential of the electrodes of both lenses is 2 kV. The electrostatic potential and the electric field components of the lens doublet are calculated using a 3-D computer code based on the method of moments. Spatial and angular distributions of protons propagating through the lens doublet, as well as the parameters defining beam quality, are investigated. As in the case of the single square electrostatic rainbow lens, the evolution of these distributions is determined by the evolution of corresponding rainbow lines, generated by the use of the theory of crystal rainbows. Our study shows that a beam core in the shape of a cusped square is formed by the spatial rainbow line that appears first. This rainbow line occurs during proton propagation through the first lens. The beam core retains the cusped square shape during the propagation through the second lens. The electrostatic field of the second lens causes the appearance of an additional spatial rainbow line, which encompasses the beam core and defines the outer border of the beam. This rainbow line constitutes the main difference between the cases of the lens doublet and a single lens.",
journal = "Nuclear technology and radiation protection",
title = "Focusing Properties of a Square Electrostatic Rainbow Lens Doublet",
volume = "30",
number = "4",
pages = "239-248",
doi = "10.2298/NTRP1504239T"
}

Telečki, I. N., Beličev, P., Petrović, S. M.,& Nešković, N. B.. (2015). Focusing Properties of a Square Electrostatic Rainbow Lens Doublet. in Nuclear technology and radiation protection, 30(4), 239-248.
https://doi.org/10.2298/NTRP1504239T

Telečki IN, Beličev P, Petrović SM, Nešković NB. Focusing Properties of a Square Electrostatic Rainbow Lens Doublet. in Nuclear technology and radiation protection. 2015;30(4):239-248.
doi:10.2298/NTRP1504239T .

Telečki, Igor N., Beličev, Petar, Petrović, Srđan M., Nešković, Nebojša B., "Focusing Properties of a Square Electrostatic Rainbow Lens Doublet" in Nuclear technology and radiation protection, 30, no. 4 (2015):239-248,
https://doi.org/10.2298/NTRP1504239T . .

TY  - CHAP
AU  - Nešković, Nebojša B.
AU  - Beličev, Petar
AU  - Telečki, Igor N.
AU  - Petrović, Srđan M.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7028
AB  - This review paper is devoted to transmission of protons through rainbow lenses, being novel ion beam optical elements analogous to crystal channels. We begin with a brief description of the crystal rainbow effect, which has proven to be the basic effect in ion channeling in thin crystals. Then, we concentrate on the transmission of a parallel proton beam through a square electrostatic rainbow lens. The initial proton kinetic energy is 10 keV and the potential of the electrodes is chosen to be between 10 and 100 kV. It is demonstrated that the evolution of the spatial distribution of transmitted protons is determined by the evolution of the corresponding rainbow pattern. The beam after the lens is clearly separated into the bright and dark components, corresponding to the bright and dark sides of the rainbow, respectively. All the focused protons are confined within the rainbow line. After that, we explore more accurately the focusing properties of the same electrostatic rainbow lens. This is done with the parallel and nonparallel initial beams of the kinetic energy of 10 keV. The electrode potential is chosen to be 2 kV. In the continuation of the paper, we analyze the acceleration properties of a square radiofrequency rainbow lens. This is done with a nonparallel initial beam of the kinetic energy of 10 keV. The lens electrodes excitation potential is a harmonic function of time of the amplitude of 20 keV and frequency of about 3 MHz. We explain the spatial, angular, and kinetic energy distributions of protons propagating through the lens. The transmitted proton beam contains a squarelike core, which is defined by the focused protons. Finally, we discuss the possible applications of rainbow lenses.
T2  - Advances in Imaging and Electron Physics
T1  - Rainbow Lenses
VL  - 182
SP  - 123
EP  - 186
DO  - 10.1016/B978-0-12-800146-2.00003-5
ER  - 

@inbook{
author = "Nešković, Nebojša B. and Beličev, Petar and Telečki, Igor N. and Petrović, Srđan M.",
year = "2014",
abstract = "This review paper is devoted to transmission of protons through rainbow lenses, being novel ion beam optical elements analogous to crystal channels. We begin with a brief description of the crystal rainbow effect, which has proven to be the basic effect in ion channeling in thin crystals. Then, we concentrate on the transmission of a parallel proton beam through a square electrostatic rainbow lens. The initial proton kinetic energy is 10 keV and the potential of the electrodes is chosen to be between 10 and 100 kV. It is demonstrated that the evolution of the spatial distribution of transmitted protons is determined by the evolution of the corresponding rainbow pattern. The beam after the lens is clearly separated into the bright and dark components, corresponding to the bright and dark sides of the rainbow, respectively. All the focused protons are confined within the rainbow line. After that, we explore more accurately the focusing properties of the same electrostatic rainbow lens. This is done with the parallel and nonparallel initial beams of the kinetic energy of 10 keV. The electrode potential is chosen to be 2 kV. In the continuation of the paper, we analyze the acceleration properties of a square radiofrequency rainbow lens. This is done with a nonparallel initial beam of the kinetic energy of 10 keV. The lens electrodes excitation potential is a harmonic function of time of the amplitude of 20 keV and frequency of about 3 MHz. We explain the spatial, angular, and kinetic energy distributions of protons propagating through the lens. The transmitted proton beam contains a squarelike core, which is defined by the focused protons. Finally, we discuss the possible applications of rainbow lenses.",
journal = "Advances in Imaging and Electron Physics",
booktitle = "Rainbow Lenses",
volume = "182",
pages = "123-186",
doi = "10.1016/B978-0-12-800146-2.00003-5"
}

Nešković, N. B., Beličev, P., Telečki, I. N.,& Petrović, S. M.. (2014). Rainbow Lenses. in Advances in Imaging and Electron Physics, 182, 123-186.
https://doi.org/10.1016/B978-0-12-800146-2.00003-5

Nešković NB, Beličev P, Telečki IN, Petrović SM. Rainbow Lenses. in Advances in Imaging and Electron Physics. 2014;182:123-186.
doi:10.1016/B978-0-12-800146-2.00003-5 .

Nešković, Nebojša B., Beličev, Petar, Telečki, Igor N., Petrović, Srđan M., "Rainbow Lenses" in Advances in Imaging and Electron Physics, 182 (2014):123-186,
https://doi.org/10.1016/B978-0-12-800146-2.00003-5 . .

TY  - JOUR
AU  - Rađenović, Branislav M.
AU  - Beličev, Petar
AU  - Radmilovic-Radjenovic, Marija D.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5449
AB  - This paper contains results of the three-dimensional simulations of the surface topography evolution of the niobium superconducting radio frequency cavities during isotropic and anisotropic etching modes. The initial rough surface is determined from the experimental power spectral density. The simulation results based on the level set method reveal that the time dependence of the root mean square roughness obeys Family-Viscek scaling law. The growth exponential factors beta are determined for both etching modes. Exponential factor for the isotropic etching is 100 times lower than that for the anisotropic etching mode reviling that the isotropic etching is very useful mechanism of the smoothing.
T2  - Nuclear technology and radiation protection
T1  - Three-Dimensional Simulations of the Surface Topography Evolution of Niobium Superconducting Radio Frequency Cavities
VL  - 29
IS  - 2
SP  - 97
EP  - 101
DO  - 10.2298/NTRP1402097R
ER  - 

@article{
author = "Rađenović, Branislav M. and Beličev, Petar and Radmilovic-Radjenovic, Marija D.",
year = "2014",
abstract = "This paper contains results of the three-dimensional simulations of the surface topography evolution of the niobium superconducting radio frequency cavities during isotropic and anisotropic etching modes. The initial rough surface is determined from the experimental power spectral density. The simulation results based on the level set method reveal that the time dependence of the root mean square roughness obeys Family-Viscek scaling law. The growth exponential factors beta are determined for both etching modes. Exponential factor for the isotropic etching is 100 times lower than that for the anisotropic etching mode reviling that the isotropic etching is very useful mechanism of the smoothing.",
journal = "Nuclear technology and radiation protection",
title = "Three-Dimensional Simulations of the Surface Topography Evolution of Niobium Superconducting Radio Frequency Cavities",
volume = "29",
number = "2",
pages = "97-101",
doi = "10.2298/NTRP1402097R"
}

Rađenović, B. M., Beličev, P.,& Radmilovic-Radjenovic, M. D.. (2014). Three-Dimensional Simulations of the Surface Topography Evolution of Niobium Superconducting Radio Frequency Cavities. in Nuclear technology and radiation protection, 29(2), 97-101.
https://doi.org/10.2298/NTRP1402097R

Rađenović BM, Beličev P, Radmilovic-Radjenovic MD. Three-Dimensional Simulations of the Surface Topography Evolution of Niobium Superconducting Radio Frequency Cavities. in Nuclear technology and radiation protection. 2014;29(2):97-101.
doi:10.2298/NTRP1402097R .

Rađenović, Branislav M., Beličev, Petar, Radmilovic-Radjenovic, Marija D., "Three-Dimensional Simulations of the Surface Topography Evolution of Niobium Superconducting Radio Frequency Cavities" in Nuclear technology and radiation protection, 29, no. 2 (2014):97-101,
https://doi.org/10.2298/NTRP1402097R . .

TY  - JOUR
AU  - Telečki, Igor N.
AU  - Petrović, Srđan M.
AU  - Beličev, Petar
AU  - Radenovic, B.
AU  - Balvanović, Roman V.
AU  - Bojović, Boško
AU  - Nešković, Nebojša B.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5158
AB  - This paper is devoted to the focusing properties of a square electrostatic rainbow lens, which is a novel ion beam optical element. We consider the transmission of parallel and non-parallel proton beams of the initial kinetic energy of 10 keV through this lens. The potential of the electrodes of the lens is chosen to be 2 kV. The electrostatic potential and components of the electric field in the region of the lens are calculated using a three-dimensional finite element computer code. We investigate the spatial and angular distributions of protons propagating through the lens and in the drift space after it. It is confirmed that the evolutions of these distributions are determined by the evolutions of the corresponding rainbow lines, generated using the theory of crystal rainbows. The beam is separated into two components. One beam component, appearing as a beam core, is generated dominantly by the focused protons. Its boundary line in the transverse position plane can be very well approximated by a hypotrochoid. The other beam component is generated dominantly by the defocused protons. We present the focusing coefficient of the lens, the confining coefficients of the lens for the focused and defocused protons, the density of the beam core, the vertical or horizontal emittance of the beam core, and the brightness of the beam core. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
T1  - Focusing properties of a square electrostatic rainbow lens
VL  - 694
SP  - 224
EP  - 233
DO  - 10.1016/j.nima.2012.08.051
ER  - 

@article{
author = "Telečki, Igor N. and Petrović, Srđan M. and Beličev, Petar and Radenovic, B. and Balvanović, Roman V. and Bojović, Boško and Nešković, Nebojša B.",
year = "2012",
abstract = "This paper is devoted to the focusing properties of a square electrostatic rainbow lens, which is a novel ion beam optical element. We consider the transmission of parallel and non-parallel proton beams of the initial kinetic energy of 10 keV through this lens. The potential of the electrodes of the lens is chosen to be 2 kV. The electrostatic potential and components of the electric field in the region of the lens are calculated using a three-dimensional finite element computer code. We investigate the spatial and angular distributions of protons propagating through the lens and in the drift space after it. It is confirmed that the evolutions of these distributions are determined by the evolutions of the corresponding rainbow lines, generated using the theory of crystal rainbows. The beam is separated into two components. One beam component, appearing as a beam core, is generated dominantly by the focused protons. Its boundary line in the transverse position plane can be very well approximated by a hypotrochoid. The other beam component is generated dominantly by the defocused protons. We present the focusing coefficient of the lens, the confining coefficients of the lens for the focused and defocused protons, the density of the beam core, the vertical or horizontal emittance of the beam core, and the brightness of the beam core. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment",
title = "Focusing properties of a square electrostatic rainbow lens",
volume = "694",
pages = "224-233",
doi = "10.1016/j.nima.2012.08.051"
}

Telečki, I. N., Petrović, S. M., Beličev, P., Radenovic, B., Balvanović, R. V., Bojović, B.,& Nešković, N. B.. (2012). Focusing properties of a square electrostatic rainbow lens. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 694, 224-233.
https://doi.org/10.1016/j.nima.2012.08.051

Telečki IN, Petrović SM, Beličev P, Radenovic B, Balvanović RV, Bojović B, Nešković NB. Focusing properties of a square electrostatic rainbow lens. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 2012;694:224-233.
doi:10.1016/j.nima.2012.08.051 .

Telečki, Igor N., Petrović, Srđan M., Beličev, Petar, Radenovic, B., Balvanović, Roman V., Bojović, Boško, Nešković, Nebojša B., "Focusing properties of a square electrostatic rainbow lens" in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 694 (2012):224-233,
https://doi.org/10.1016/j.nima.2012.08.051 . .

TY  - JOUR
AU  - Trajić, Ivan
AU  - Beličev, Petar
AU  - Petrović, Srđan M.
AU  - Rajčević, Milan N.
AU  - Munitlak, Dragan M.
AU  - Bojović, Boško
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5268
AB  - A method of measuring particle fluence and ion beam current in experiments of ion implantation is presented. The design and technical details of a realized prototype device are discussed. Special care is devoted to the effect of secondary electrons and its elimination. An electrostatic solution with two electrodes for the suppression of secondary electrons has been realized. Our approach provides redundancy and allows lower bias voltages to be used for the suppression of electrons. The presented results illustrate the efficiency of the proposed solution.
T2  - Nuclear technology and radiation protection
T1  - Prototype of the Particle Fluence Measurement Device
VL  - 27
IS  - 4
SP  - 404
EP  - 408
DO  - 10.2298/NTRP1204404T
ER  - 

@article{
author = "Trajić, Ivan and Beličev, Petar and Petrović, Srđan M. and Rajčević, Milan N. and Munitlak, Dragan M. and Bojović, Boško",
year = "2012",
abstract = "A method of measuring particle fluence and ion beam current in experiments of ion implantation is presented. The design and technical details of a realized prototype device are discussed. Special care is devoted to the effect of secondary electrons and its elimination. An electrostatic solution with two electrodes for the suppression of secondary electrons has been realized. Our approach provides redundancy and allows lower bias voltages to be used for the suppression of electrons. The presented results illustrate the efficiency of the proposed solution.",
journal = "Nuclear technology and radiation protection",
title = "Prototype of the Particle Fluence Measurement Device",
volume = "27",
number = "4",
pages = "404-408",
doi = "10.2298/NTRP1204404T"
}

Trajić, I., Beličev, P., Petrović, S. M., Rajčević, M. N., Munitlak, D. M.,& Bojović, B.. (2012). Prototype of the Particle Fluence Measurement Device. in Nuclear technology and radiation protection, 27(4), 404-408.
https://doi.org/10.2298/NTRP1204404T

Trajić I, Beličev P, Petrović SM, Rajčević MN, Munitlak DM, Bojović B. Prototype of the Particle Fluence Measurement Device. in Nuclear technology and radiation protection. 2012;27(4):404-408.
doi:10.2298/NTRP1204404T .

Trajić, Ivan, Beličev, Petar, Petrović, Srđan M., Rajčević, Milan N., Munitlak, Dragan M., Bojović, Boško, "Prototype of the Particle Fluence Measurement Device" in Nuclear technology and radiation protection, 27, no. 4 (2012):404-408,
https://doi.org/10.2298/NTRP1204404T . .

TY  - JOUR
AU  - Balvanović, Roman V.
AU  - Beličev, Petar
AU  - Rađenović, Branislav M.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5046
AB  - The previously developed model of ion beam transport control of the FAMA facility is further enhanced by equipping it with the model of ion beam diagnostics. The model of control, executing once, is adjusted so that it executes in iterative mode, where each iteration samples the input beam normally distributed over initial phase space and calculates a single trajectory through the facility beam lines. The model takes into account only the particles that manage to pass through all the beam line apertures, emulating in this way a Faraday cup and a beam profile meter. Generated are also beam phase space distributions and horizontal and vertical beam profiles at the end of the beam transport lines the FAMA facility consists of. By adding the model of ion beam diagnostics to the model of ion beam transport control, the process of determining optimal ion beam control parameters is eased and speeded up, and the understanding of influence of control parameters on the ion beam characteristics is improved. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
T1  - Modeling FAMA ion beam diagnostics based on the Ptolemy II model
VL  - 690
SP  - 17
EP  - 26
DO  - 10.1016/j.nima.2012.06.028
ER  - 

@article{
author = "Balvanović, Roman V. and Beličev, Petar and Rađenović, Branislav M.",
year = "2012",
abstract = "The previously developed model of ion beam transport control of the FAMA facility is further enhanced by equipping it with the model of ion beam diagnostics. The model of control, executing once, is adjusted so that it executes in iterative mode, where each iteration samples the input beam normally distributed over initial phase space and calculates a single trajectory through the facility beam lines. The model takes into account only the particles that manage to pass through all the beam line apertures, emulating in this way a Faraday cup and a beam profile meter. Generated are also beam phase space distributions and horizontal and vertical beam profiles at the end of the beam transport lines the FAMA facility consists of. By adding the model of ion beam diagnostics to the model of ion beam transport control, the process of determining optimal ion beam control parameters is eased and speeded up, and the understanding of influence of control parameters on the ion beam characteristics is improved. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment",
title = "Modeling FAMA ion beam diagnostics based on the Ptolemy II model",
volume = "690",
pages = "17-26",
doi = "10.1016/j.nima.2012.06.028"
}

Balvanović, R. V., Beličev, P.,& Rađenović, B. M.. (2012). Modeling FAMA ion beam diagnostics based on the Ptolemy II model. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 690, 17-26.
https://doi.org/10.1016/j.nima.2012.06.028

Balvanović RV, Beličev P, Rađenović BM. Modeling FAMA ion beam diagnostics based on the Ptolemy II model. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 2012;690:17-26.
doi:10.1016/j.nima.2012.06.028 .

Balvanović, Roman V., Beličev, Petar, Rađenović, Branislav M., "Modeling FAMA ion beam diagnostics based on the Ptolemy II model" in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 690 (2012):17-26,
https://doi.org/10.1016/j.nima.2012.06.028 . .

TY  - JOUR
AU  - Spasić-Jokić, Vesna
AU  - Dobrosavljević, Aleksandar S.
AU  - Beličev, Petar
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5070
AB  - Successful radiotherapy treatment depends on the absorbed dose evaluation and the possibility to define metrological characteristics of the therapy beam. Radiotherapy requires tumor dose delivery with expanded uncertainty less than +/- 5 %. It is particularly important to reduce uncertainty during therapy beam calibration as well as to apply all necessary ionization chamber correction factors. Absorbed dose to water was determined using ionometric method. Calibration was performed in reference cobalt beam. Combined standard uncertainty of the calculated absorbed dose to water in 65 MeV proton beam was +/- 1.97% while the obtained expanded uncertainty of absorbed dose for the same beam quality was +/- 5.02%. The uncertainty estimation method has been developed within the project TESLA.
T2  - Nuclear technology and radiation protection
T1  - Absorbed Dose Uncertainty Estimation for Proton Therapy
VL  - 27
IS  - 3
SP  - 297
EP  - 304
DO  - 10.2298/NTRP1203297S
ER  - 

@article{
author = "Spasić-Jokić, Vesna and Dobrosavljević, Aleksandar S. and Beličev, Petar",
year = "2012",
abstract = "Successful radiotherapy treatment depends on the absorbed dose evaluation and the possibility to define metrological characteristics of the therapy beam. Radiotherapy requires tumor dose delivery with expanded uncertainty less than +/- 5 %. It is particularly important to reduce uncertainty during therapy beam calibration as well as to apply all necessary ionization chamber correction factors. Absorbed dose to water was determined using ionometric method. Calibration was performed in reference cobalt beam. Combined standard uncertainty of the calculated absorbed dose to water in 65 MeV proton beam was +/- 1.97% while the obtained expanded uncertainty of absorbed dose for the same beam quality was +/- 5.02%. The uncertainty estimation method has been developed within the project TESLA.",
journal = "Nuclear technology and radiation protection",
title = "Absorbed Dose Uncertainty Estimation for Proton Therapy",
volume = "27",
number = "3",
pages = "297-304",
doi = "10.2298/NTRP1203297S"
}

Spasić-Jokić, V., Dobrosavljević, A. S.,& Beličev, P.. (2012). Absorbed Dose Uncertainty Estimation for Proton Therapy. in Nuclear technology and radiation protection, 27(3), 297-304.
https://doi.org/10.2298/NTRP1203297S

Spasić-Jokić V, Dobrosavljević AS, Beličev P. Absorbed Dose Uncertainty Estimation for Proton Therapy. in Nuclear technology and radiation protection. 2012;27(3):297-304.
doi:10.2298/NTRP1203297S .

Spasić-Jokić, Vesna, Dobrosavljević, Aleksandar S., Beličev, Petar, "Absorbed Dose Uncertainty Estimation for Proton Therapy" in Nuclear technology and radiation protection, 27, no. 3 (2012):297-304,
https://doi.org/10.2298/NTRP1203297S . .

TY  - JOUR
AU  - Radmilović-Rađenović, Marija
AU  - Rađenović, Branislav M.
AU  - Beličev, Petar
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4977
AB  - In this paper we have presented our simulation studies of 2.4 GHz microwave plasma production under the electron cyclotron resonance with an idea to expand the plasma generation conditions into the much lower pressure range and much shorter gap length. As the first for this purpose, we have focused on the influences of applied magnetic field, gas pressure and gap length on the breakdown and maintenance of plasmas. Calculations were performed by using a one-dimensional particle-in-cell/Monte Carlo collisions code with three velocity components. The obtained simulation results are in a good agreement with the available experimental data providing an insight into the resonant electron acceleration for ECR condition and the resonant electron confinement for the 2nd harmonic ECR. In addition, analytical expressions for the breakdown voltage and the trapping field have been derived.
T2  - Acta Physica Polonica A
T1  - Characteristics of the 2nd Harmonic ECR Micro Plasma Sources by Using PIC/MCC Simulations
VL  - 122
IS  - 1
SP  - 128
EP  - 131
DO  - 10.12693/APhysPolA.122.128
ER  - 

@article{
author = "Radmilović-Rađenović, Marija and Rađenović, Branislav M. and Beličev, Petar",
year = "2012",
abstract = "In this paper we have presented our simulation studies of 2.4 GHz microwave plasma production under the electron cyclotron resonance with an idea to expand the plasma generation conditions into the much lower pressure range and much shorter gap length. As the first for this purpose, we have focused on the influences of applied magnetic field, gas pressure and gap length on the breakdown and maintenance of plasmas. Calculations were performed by using a one-dimensional particle-in-cell/Monte Carlo collisions code with three velocity components. The obtained simulation results are in a good agreement with the available experimental data providing an insight into the resonant electron acceleration for ECR condition and the resonant electron confinement for the 2nd harmonic ECR. In addition, analytical expressions for the breakdown voltage and the trapping field have been derived.",
journal = "Acta Physica Polonica A",
title = "Characteristics of the 2nd Harmonic ECR Micro Plasma Sources by Using PIC/MCC Simulations",
volume = "122",
number = "1",
pages = "128-131",
doi = "10.12693/APhysPolA.122.128"
}

Radmilović-Rađenović, M., Rađenović, B. M.,& Beličev, P.. (2012). Characteristics of the 2nd Harmonic ECR Micro Plasma Sources by Using PIC/MCC Simulations. in Acta Physica Polonica A, 122(1), 128-131.
https://doi.org/10.12693/APhysPolA.122.128

Radmilović-Rađenović M, Rađenović BM, Beličev P. Characteristics of the 2nd Harmonic ECR Micro Plasma Sources by Using PIC/MCC Simulations. in Acta Physica Polonica A. 2012;122(1):128-131.
doi:10.12693/APhysPolA.122.128 .

Radmilović-Rađenović, Marija, Rađenović, Branislav M., Beličev, Petar, "Characteristics of the 2nd Harmonic ECR Micro Plasma Sources by Using PIC/MCC Simulations" in Acta Physica Polonica A, 122, no. 1 (2012):128-131,
https://doi.org/10.12693/APhysPolA.122.128 . .

TY  - JOUR
AU  - Rađenović, Branislav
AU  - Beličev, Petar
AU  - Radmilovic-Radjenovic, Marija
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4663
AB  - Here, we present some results of the simulations of the transport of an H- ion beam bunch through the spiral inflector of the VINCY cyclotron. Calculations of the electric field were performed using a finite-element method, whereas the trajectories of the particles in the bunch were tracked by solving Newton-Lorentz equations of motion with direct Coulomb interaction between particles included.
T2  - IEEE Transactions on Plasma Science
T1  - A Simulation Framework for the Ion Transport in Spiral Inflectors
VL  - 39
IS  - 11
SP  - 2612
EP  - 2613
DO  - 10.1109/TPS.2011.2155095
ER  - 

@article{
author = "Rađenović, Branislav and Beličev, Petar and Radmilovic-Radjenovic, Marija",
year = "2011",
abstract = "Here, we present some results of the simulations of the transport of an H- ion beam bunch through the spiral inflector of the VINCY cyclotron. Calculations of the electric field were performed using a finite-element method, whereas the trajectories of the particles in the bunch were tracked by solving Newton-Lorentz equations of motion with direct Coulomb interaction between particles included.",
journal = "IEEE Transactions on Plasma Science",
title = "A Simulation Framework for the Ion Transport in Spiral Inflectors",
volume = "39",
number = "11",
pages = "2612-2613",
doi = "10.1109/TPS.2011.2155095"
}

Rađenović, B., Beličev, P.,& Radmilovic-Radjenovic, M.. (2011). A Simulation Framework for the Ion Transport in Spiral Inflectors. in IEEE Transactions on Plasma Science, 39(11), 2612-2613.
https://doi.org/10.1109/TPS.2011.2155095

Rađenović B, Beličev P, Radmilovic-Radjenovic M. A Simulation Framework for the Ion Transport in Spiral Inflectors. in IEEE Transactions on Plasma Science. 2011;39(11):2612-2613.
doi:10.1109/TPS.2011.2155095 .

Rađenović, Branislav, Beličev, Petar, Radmilovic-Radjenovic, Marija, "A Simulation Framework for the Ion Transport in Spiral Inflectors" in IEEE Transactions on Plasma Science, 39, no. 11 (2011):2612-2613,
https://doi.org/10.1109/TPS.2011.2155095 . .

TY  - CONF
AU  - Beličev, Petar
AU  - Spasić-Jokić, Vesna
AU  - Mayer, S.
AU  - Milosevic, M.
AU  - Ilic, R.
AU  - Pešić, Milan P.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6899
AB  - The Metal -Oxide Semiconductor Field-Effect-Transistor (MOSFET, RadFET) is frequently used as a sensor of ionizing radiation in nuclear-medicine, diagnostic-radiology, radiotherapy quality-assurance and in the nuclear and space industries. We focused our investigations on calculating the energy response of a p-type RadFET to low-energy photons in range from 12 keV to 2 MeV and on understanding the influence of uncertainties in the composition and geometry of the device in calculating the energy response function. All results were normalized to unit air kerma incident on the RadFET for incident photon energy of 1.1 MeV. The calculations of the energy response characteristics of a RadFET radiation detector were performed via Monte Carlo simulations using the MCNPX code and for a limited number of incident photon energies the FOTELP code was also used for the sake of comparison. The geometry of the RadFET was modeled as a simple stack of appropriate materials. Our goal was to obtain results with statistical uncertainties better than 1% (fulfilled in MCNPX calculations for all incident energies which resulted in simulations with 1 - 2x10(9) histories.
C3  - Journal of Physics: Conference Series
T1  - Monte Carlo Calculation of the Energy Response Characteristics of a RadFET Radiation Detector
VL  - 238
DO  - 10.1088/1742-6596/238/1/012030
ER  - 

@conference{
author = "Beličev, Petar and Spasić-Jokić, Vesna and Mayer, S. and Milosevic, M. and Ilic, R. and Pešić, Milan P.",
year = "2010",
abstract = "The Metal -Oxide Semiconductor Field-Effect-Transistor (MOSFET, RadFET) is frequently used as a sensor of ionizing radiation in nuclear-medicine, diagnostic-radiology, radiotherapy quality-assurance and in the nuclear and space industries. We focused our investigations on calculating the energy response of a p-type RadFET to low-energy photons in range from 12 keV to 2 MeV and on understanding the influence of uncertainties in the composition and geometry of the device in calculating the energy response function. All results were normalized to unit air kerma incident on the RadFET for incident photon energy of 1.1 MeV. The calculations of the energy response characteristics of a RadFET radiation detector were performed via Monte Carlo simulations using the MCNPX code and for a limited number of incident photon energies the FOTELP code was also used for the sake of comparison. The geometry of the RadFET was modeled as a simple stack of appropriate materials. Our goal was to obtain results with statistical uncertainties better than 1% (fulfilled in MCNPX calculations for all incident energies which resulted in simulations with 1 - 2x10(9) histories.",
journal = "Journal of Physics: Conference Series",
title = "Monte Carlo Calculation of the Energy Response Characteristics of a RadFET Radiation Detector",
volume = "238",
doi = "10.1088/1742-6596/238/1/012030"
}

Beličev, P., Spasić-Jokić, V., Mayer, S., Milosevic, M., Ilic, R.,& Pešić, M. P.. (2010). Monte Carlo Calculation of the Energy Response Characteristics of a RadFET Radiation Detector. in Journal of Physics: Conference Series, 238.
https://doi.org/10.1088/1742-6596/238/1/012030

Beličev P, Spasić-Jokić V, Mayer S, Milosevic M, Ilic R, Pešić MP. Monte Carlo Calculation of the Energy Response Characteristics of a RadFET Radiation Detector. in Journal of Physics: Conference Series. 2010;238.
doi:10.1088/1742-6596/238/1/012030 .

Beličev, Petar, Spasić-Jokić, Vesna, Mayer, S., Milosevic, M., Ilic, R., Pešić, Milan P., "Monte Carlo Calculation of the Energy Response Characteristics of a RadFET Radiation Detector" in Journal of Physics: Conference Series, 238 (2010),
https://doi.org/10.1088/1742-6596/238/1/012030 . .

TY  - JOUR
AU  - Balvanović, Roman V.
AU  - Radenovic, B.
AU  - Beličev, Petar
AU  - Nešković, Nebojša B.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3776
AB  - FAMA is a facility for modification and analysis of materials with ion beams. Due to the wide range of ion beams and energies used in the facility and its future expansion, the need has arisen for faster tuning of ion beams transport control parameters. With this aim, a new approach to modeling ion-beam transport system was developed, based on the Ptolemy II modeling and design framework. A model in Ptolemy II is a hierarchical aggregation of components called actors, which communicate with other actors using tokens, or pieces of data. Each ion optical element is modeled by a composite actor implementing beam matrix transformation function, while tokens carry beam matrix data. A basic library of models of typical ion optical elements is developed, and a complex model of FAMA ion beam transport system is hierarchically integrated with bottom-up approach. The model is extended to include control functions. The developed model is modular, flexible and extensible. The results obtained by simulation on the model demonstrate easy and efficient tuning of beam line control parameters. Fine tuning of control parameters, due to uncertainties inherent to modeling, still has to be performed on-line. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
T1  - Controlling FAMA by the Ptolemy II model of ion beam transport
VL  - 607
IS  - 2
SP  - 322
EP  - 333
DO  - 10.1016/j.nima.2009.05.181
ER  - 

@article{
author = "Balvanović, Roman V. and Radenovic, B. and Beličev, Petar and Nešković, Nebojša B.",
year = "2009",
abstract = "FAMA is a facility for modification and analysis of materials with ion beams. Due to the wide range of ion beams and energies used in the facility and its future expansion, the need has arisen for faster tuning of ion beams transport control parameters. With this aim, a new approach to modeling ion-beam transport system was developed, based on the Ptolemy II modeling and design framework. A model in Ptolemy II is a hierarchical aggregation of components called actors, which communicate with other actors using tokens, or pieces of data. Each ion optical element is modeled by a composite actor implementing beam matrix transformation function, while tokens carry beam matrix data. A basic library of models of typical ion optical elements is developed, and a complex model of FAMA ion beam transport system is hierarchically integrated with bottom-up approach. The model is extended to include control functions. The developed model is modular, flexible and extensible. The results obtained by simulation on the model demonstrate easy and efficient tuning of beam line control parameters. Fine tuning of control parameters, due to uncertainties inherent to modeling, still has to be performed on-line. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment",
title = "Controlling FAMA by the Ptolemy II model of ion beam transport",
volume = "607",
number = "2",
pages = "322-333",
doi = "10.1016/j.nima.2009.05.181"
}

Balvanović, R. V., Radenovic, B., Beličev, P.,& Nešković, N. B.. (2009). Controlling FAMA by the Ptolemy II model of ion beam transport. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 607(2), 322-333.
https://doi.org/10.1016/j.nima.2009.05.181

Balvanović RV, Radenovic B, Beličev P, Nešković NB. Controlling FAMA by the Ptolemy II model of ion beam transport. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 2009;607(2):322-333.
doi:10.1016/j.nima.2009.05.181 .

Balvanović, Roman V., Radenovic, B., Beličev, Petar, Nešković, Nebojša B., "Controlling FAMA by the Ptolemy II model of ion beam transport" in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 607, no. 2 (2009):322-333,
https://doi.org/10.1016/j.nima.2009.05.181 . .

TY  - JOUR
AU  - Dobrosavljević, Aleksandar S.
AU  - Nešković, Nebojša B.
AU  - Beličev, Petar
AU  - Čomor, Jožef J.
AU  - Vujović, Velibor V.
AU  - Balvanović, Roman V.
AU  - Ristić-Đurović, Jasna L.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3600
AB  - t present, heavy ion beams from the electron cyclotron resonance (ECR) ion source in the Laboratory of Physics of the Vinca Institute of Nuclear Sciences, Belgrade, Serbia, are employed in a channel for surface modification of materials. The source and channel were commissioned in 1998, and have been used since that time by a number of user groups from the Vinca Institute and other scientific and educational institutions in Serbia. However, since the maximum extraction voltage of the source is +25 kV, sometimes the extracted beams do not have sufficiently high energies for such applications. Therefore, in order to solve this problem, we have decided to construct a new channel, to be used for deeper modification of materials. The beams obtained from the source will be post-accelerated by biasing the target to be irradiated to the negative potentials of down to - 100 W For example, we shall be able to bombard the target with the (132)Xe(24+) beam of the energy of up to 3 MeV, instead of up to 600 keV, in the case without the biasing system. An additional possibility will be to bias the target to the positive potentials of up to +25 kV and thus decelerate the beams extracted from the source down to the energies of about 1 keV. Consequently, one will be able to modify materials with the beams in a wide energy range, from similar to 1 to similar to 3 MeV, which is rarely met at similar experimental set-ups. It must be noted that changing the post-accelerated or decelerated beam energy in the new channel will be performed simply by adjusting the power supply of the biasing system, without any adjustments of the source and of the transport elements between the source and the interaction chamber. (C) 2008 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
T1  - A channel for modification of materials with post-accelerated or decelerated multiply charged ion beams
VL  - 597
IS  - 2-3
SP  - 136
EP  - 141
DO  - 10.1016/j.nima.2008.08.148
ER  - 

@article{
author = "Dobrosavljević, Aleksandar S. and Nešković, Nebojša B. and Beličev, Petar and Čomor, Jožef J. and Vujović, Velibor V. and Balvanović, Roman V. and Ristić-Đurović, Jasna L.",
year = "2008",
abstract = "t present, heavy ion beams from the electron cyclotron resonance (ECR) ion source in the Laboratory of Physics of the Vinca Institute of Nuclear Sciences, Belgrade, Serbia, are employed in a channel for surface modification of materials. The source and channel were commissioned in 1998, and have been used since that time by a number of user groups from the Vinca Institute and other scientific and educational institutions in Serbia. However, since the maximum extraction voltage of the source is +25 kV, sometimes the extracted beams do not have sufficiently high energies for such applications. Therefore, in order to solve this problem, we have decided to construct a new channel, to be used for deeper modification of materials. The beams obtained from the source will be post-accelerated by biasing the target to be irradiated to the negative potentials of down to - 100 W For example, we shall be able to bombard the target with the (132)Xe(24+) beam of the energy of up to 3 MeV, instead of up to 600 keV, in the case without the biasing system. An additional possibility will be to bias the target to the positive potentials of up to +25 kV and thus decelerate the beams extracted from the source down to the energies of about 1 keV. Consequently, one will be able to modify materials with the beams in a wide energy range, from similar to 1 to similar to 3 MeV, which is rarely met at similar experimental set-ups. It must be noted that changing the post-accelerated or decelerated beam energy in the new channel will be performed simply by adjusting the power supply of the biasing system, without any adjustments of the source and of the transport elements between the source and the interaction chamber. (C) 2008 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment",
title = "A channel for modification of materials with post-accelerated or decelerated multiply charged ion beams",
volume = "597",
number = "2-3",
pages = "136-141",
doi = "10.1016/j.nima.2008.08.148"
}

Dobrosavljević, A. S., Nešković, N. B., Beličev, P., Čomor, J. J., Vujović, V. V., Balvanović, R. V.,& Ristić-Đurović, J. L.. (2008). A channel for modification of materials with post-accelerated or decelerated multiply charged ion beams. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 597(2-3), 136-141.
https://doi.org/10.1016/j.nima.2008.08.148

Dobrosavljević AS, Nešković NB, Beličev P, Čomor JJ, Vujović VV, Balvanović RV, Ristić-Đurović JL. A channel for modification of materials with post-accelerated or decelerated multiply charged ion beams. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 2008;597(2-3):136-141.
doi:10.1016/j.nima.2008.08.148 .

Dobrosavljević, Aleksandar S., Nešković, Nebojša B., Beličev, Petar, Čomor, Jožef J., Vujović, Velibor V., Balvanović, Roman V., Ristić-Đurović, Jasna L., "A channel for modification of materials with post-accelerated or decelerated multiply charged ion beams" in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 597, no. 2-3 (2008):136-141,
https://doi.org/10.1016/j.nima.2008.08.148 . .

TY  - JOUR
AU  - Steljic, Milijana
AU  - Milošević, Miodrag J.
AU  - Beličev, Petar
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3243
AB  - The paper describes the procedure of adapting a coaxial high-precision germanium detector to a device with numerical calibration. The procedure includes the determination of detector dimensions and establishing the corresponding model of the system. In order to achieve a successful calibration of the system without the usage of standard sources, Monte Carlo simulations were performed to determine its efficiency and pulse-height response function. A detailed Monte Carlo model was developed using the MCNP-5.0 code. The obtained results have indicated that this method represents a valuable tool for the quantitative uncertainty analysis of radiation spectrometers and gamma-ray detector calibration, thus minimizing the need for the deployment of radioactive sources.
T2  - Nuclear technology and radiation protection
T1  - Modeling of Germanium Detector and Its Sourceless Calibration
VL  - 23
IS  - 2
SP  - 51
EP  - 57
DO  - 10.2298/NTRP0802051S
ER  - 

@article{
author = "Steljic, Milijana and Milošević, Miodrag J. and Beličev, Petar",
year = "2008",
abstract = "The paper describes the procedure of adapting a coaxial high-precision germanium detector to a device with numerical calibration. The procedure includes the determination of detector dimensions and establishing the corresponding model of the system. In order to achieve a successful calibration of the system without the usage of standard sources, Monte Carlo simulations were performed to determine its efficiency and pulse-height response function. A detailed Monte Carlo model was developed using the MCNP-5.0 code. The obtained results have indicated that this method represents a valuable tool for the quantitative uncertainty analysis of radiation spectrometers and gamma-ray detector calibration, thus minimizing the need for the deployment of radioactive sources.",
journal = "Nuclear technology and radiation protection",
title = "Modeling of Germanium Detector and Its Sourceless Calibration",
volume = "23",
number = "2",
pages = "51-57",
doi = "10.2298/NTRP0802051S"
}

Steljic, M., Milošević, M. J.,& Beličev, P.. (2008). Modeling of Germanium Detector and Its Sourceless Calibration. in Nuclear technology and radiation protection, 23(2), 51-57.
https://doi.org/10.2298/NTRP0802051S

Steljic M, Milošević MJ, Beličev P. Modeling of Germanium Detector and Its Sourceless Calibration. in Nuclear technology and radiation protection. 2008;23(2):51-57.
doi:10.2298/NTRP0802051S .

Steljic, Milijana, Milošević, Miodrag J., Beličev, Petar, "Modeling of Germanium Detector and Its Sourceless Calibration" in Nuclear technology and radiation protection, 23, no. 2 (2008):51-57,
https://doi.org/10.2298/NTRP0802051S . .

TY  - JOUR
AU  - Ateia, Embarka
AU  - Ciraj-Bjelac, Olivera
AU  - Kovačević, Milojko
AU  - Beličev, Petar
AU  - Cvetković, Bratislav
AU  - Aničin, Ivan V.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3244
AB  - It is well known that medical linear accelerators generate activation products when operated above certain electron (photon) energies. The aim of the present work is to assess the activation behavior of a medium-energy radiotherapy linear accelerator by applying in situ gamma-ray spectrometry and dose measurements, and to estimate the additional dose to radiotherapy staff on the basis of these results. Spectral analysis was performed parallel to dose rate measurements in the isocenter of the linear accelerator, immediately after the termination of irradiation. The following radioisotopes were detected by spectral analysis: (28)Al, (62)Cu, (56)Mn, (64)Cu, (187)W, and (57)Ni. The short-lived isotopes such as (28)Al and (62)Cu are the most important factors of the clinical routine, while the contribution to the radiation dose of medium-lived isotopes such as (56)Mn, (57)Ni, (64)Cu, and (187)W increases during the working day. Measured dose rates at the isocenter ranged from 2.2 mu Sv/h to 10 mu Sv/h in various measuring points of interest for the members of the radiotherapy staff. Within the period of 10 minutes, the dose rate decreased to values of 0.8 mu Sv/h. According to actual workloads in radiotherapy departments, a realistic exposure scenario was set, resulting in a maximal additional annual whole body dose to the radiotherapy staff of about 3.5 mSv.
T2  - Nuclear technology and radiation protection
T1  - Additional Dose Assessment from the Activation of High-Energy Linear Accelerators Used in Radiation Therapy
VL  - 23
IS  - 2
SP  - 58
EP  - 64
DO  - 10.2298/NTRP0802058A
ER  - 

@article{
author = "Ateia, Embarka and Ciraj-Bjelac, Olivera and Kovačević, Milojko and Beličev, Petar and Cvetković, Bratislav and Aničin, Ivan V.",
year = "2008",
abstract = "It is well known that medical linear accelerators generate activation products when operated above certain electron (photon) energies. The aim of the present work is to assess the activation behavior of a medium-energy radiotherapy linear accelerator by applying in situ gamma-ray spectrometry and dose measurements, and to estimate the additional dose to radiotherapy staff on the basis of these results. Spectral analysis was performed parallel to dose rate measurements in the isocenter of the linear accelerator, immediately after the termination of irradiation. The following radioisotopes were detected by spectral analysis: (28)Al, (62)Cu, (56)Mn, (64)Cu, (187)W, and (57)Ni. The short-lived isotopes such as (28)Al and (62)Cu are the most important factors of the clinical routine, while the contribution to the radiation dose of medium-lived isotopes such as (56)Mn, (57)Ni, (64)Cu, and (187)W increases during the working day. Measured dose rates at the isocenter ranged from 2.2 mu Sv/h to 10 mu Sv/h in various measuring points of interest for the members of the radiotherapy staff. Within the period of 10 minutes, the dose rate decreased to values of 0.8 mu Sv/h. According to actual workloads in radiotherapy departments, a realistic exposure scenario was set, resulting in a maximal additional annual whole body dose to the radiotherapy staff of about 3.5 mSv.",
journal = "Nuclear technology and radiation protection",
title = "Additional Dose Assessment from the Activation of High-Energy Linear Accelerators Used in Radiation Therapy",
volume = "23",
number = "2",
pages = "58-64",
doi = "10.2298/NTRP0802058A"
}

Ateia, E., Ciraj-Bjelac, O., Kovačević, M., Beličev, P., Cvetković, B.,& Aničin, I. V.. (2008). Additional Dose Assessment from the Activation of High-Energy Linear Accelerators Used in Radiation Therapy. in Nuclear technology and radiation protection, 23(2), 58-64.
https://doi.org/10.2298/NTRP0802058A

Ateia E, Ciraj-Bjelac O, Kovačević M, Beličev P, Cvetković B, Aničin IV. Additional Dose Assessment from the Activation of High-Energy Linear Accelerators Used in Radiation Therapy. in Nuclear technology and radiation protection. 2008;23(2):58-64.
doi:10.2298/NTRP0802058A .

Ateia, Embarka, Ciraj-Bjelac, Olivera, Kovačević, Milojko, Beličev, Petar, Cvetković, Bratislav, Aničin, Ivan V., "Additional Dose Assessment from the Activation of High-Energy Linear Accelerators Used in Radiation Therapy" in Nuclear technology and radiation protection, 23, no. 2 (2008):58-64,
https://doi.org/10.2298/NTRP0802058A . .

TY  - JOUR
AU  - Ilić, Radovan D.
AU  - Spasić-Jokić, Vesna
AU  - Beličev, Petar
AU  - Dragovic, M
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6497
AB  - This paper describes the application of the SRNA Monte Carlo package for proton transport simulations in complex geometry and different material compositions. The SRNA package was developed for 3D dose distribution calculation in proton therapy and dosimetry and it was based on the theory of multiple scattering. The decay of proton induced compound nuclei was simulated by the Russian MSDM model and our own using ICRU 63 data. The developed package consists of two codes: the SRNA-2KG, which simulates proton transport in combinatorial geometry and the SRNA-VOX, which uses the voxelized geometry using the CT data and conversion of the Hounsfields data to tissue elemental composition. Transition probabilities for both codes are prepared by the SRNADAT code. The simulation of the proton beam characterization by multi-layer Faraday cup, spatial distribution of positron emitters obtained by the SRNA-2KG code and intercomparison of computational codes in radiation dosimetry, indicate immediate application of the Monte Carlo techniques in clinical practice. In this paper, we briefly present the physical model implemented in the SRNA package, the ISTAR proton dose planning software, as well as the results of the numerical experiments with proton beams to obtain 3D dose distribution in the eye and breast tumour.
T2  - Physics in Medicine and Biology
T1  - Monte Carlo SRNA-VOX code for 3D proton dose distribution in voxelized geometry using CT data
VL  - 50
IS  - 5
SP  - 1011
EP  - 1017
DO  - 10.1088/0031-9155/50/5/023
ER  - 

@article{
author = "Ilić, Radovan D. and Spasić-Jokić, Vesna and Beličev, Petar and Dragovic, M",
year = "2005",
abstract = "This paper describes the application of the SRNA Monte Carlo package for proton transport simulations in complex geometry and different material compositions. The SRNA package was developed for 3D dose distribution calculation in proton therapy and dosimetry and it was based on the theory of multiple scattering. The decay of proton induced compound nuclei was simulated by the Russian MSDM model and our own using ICRU 63 data. The developed package consists of two codes: the SRNA-2KG, which simulates proton transport in combinatorial geometry and the SRNA-VOX, which uses the voxelized geometry using the CT data and conversion of the Hounsfields data to tissue elemental composition. Transition probabilities for both codes are prepared by the SRNADAT code. The simulation of the proton beam characterization by multi-layer Faraday cup, spatial distribution of positron emitters obtained by the SRNA-2KG code and intercomparison of computational codes in radiation dosimetry, indicate immediate application of the Monte Carlo techniques in clinical practice. In this paper, we briefly present the physical model implemented in the SRNA package, the ISTAR proton dose planning software, as well as the results of the numerical experiments with proton beams to obtain 3D dose distribution in the eye and breast tumour.",
journal = "Physics in Medicine and Biology",
title = "Monte Carlo SRNA-VOX code for 3D proton dose distribution in voxelized geometry using CT data",
volume = "50",
number = "5",
pages = "1011-1017",
doi = "10.1088/0031-9155/50/5/023"
}

Ilić, R. D., Spasić-Jokić, V., Beličev, P.,& Dragovic, M.. (2005). Monte Carlo SRNA-VOX code for 3D proton dose distribution in voxelized geometry using CT data. in Physics in Medicine and Biology, 50(5), 1011-1017.
https://doi.org/10.1088/0031-9155/50/5/023

Ilić RD, Spasić-Jokić V, Beličev P, Dragovic M. Monte Carlo SRNA-VOX code for 3D proton dose distribution in voxelized geometry using CT data. in Physics in Medicine and Biology. 2005;50(5):1011-1017.
doi:10.1088/0031-9155/50/5/023 .

Ilić, Radovan D., Spasić-Jokić, Vesna, Beličev, Petar, Dragovic, M, "Monte Carlo SRNA-VOX code for 3D proton dose distribution in voxelized geometry using CT data" in Physics in Medicine and Biology, 50, no. 5 (2005):1011-1017,
https://doi.org/10.1088/0031-9155/50/5/023 . .

TY  - JOUR
AU  - Šiljegović, Milorad
AU  - Dobrosavljević, Aleksandar S.
AU  - Beličev, Petar
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6446
AB  - The ion-optical properties of the single gap extraction system of the mVINIS ion source are investigated. The pepper-pot method was used to measure the effective emittances of the ion beams extracted from the plasma. The emittances have been analyzed as functions of the extraction electrode position for various charge states of the ion species. (C) 2004 American Institute of Physics.
T2  - Review of Scientific Instruments
T1  - Optimization of the mVINIS ion source extraction system
VL  - 75
IS  - 5
SP  - 1506
EP  - 1507
DO  - 10.1063/1.1691502
ER  - 

@article{
author = "Šiljegović, Milorad and Dobrosavljević, Aleksandar S. and Beličev, Petar",
year = "2004",
abstract = "The ion-optical properties of the single gap extraction system of the mVINIS ion source are investigated. The pepper-pot method was used to measure the effective emittances of the ion beams extracted from the plasma. The emittances have been analyzed as functions of the extraction electrode position for various charge states of the ion species. (C) 2004 American Institute of Physics.",
journal = "Review of Scientific Instruments",
title = "Optimization of the mVINIS ion source extraction system",
volume = "75",
number = "5",
pages = "1506-1507",
doi = "10.1063/1.1691502"
}

Šiljegović, M., Dobrosavljević, A. S.,& Beličev, P.. (2004). Optimization of the mVINIS ion source extraction system. in Review of Scientific Instruments, 75(5), 1506-1507.
https://doi.org/10.1063/1.1691502

Šiljegović M, Dobrosavljević AS, Beličev P. Optimization of the mVINIS ion source extraction system. in Review of Scientific Instruments. 2004;75(5):1506-1507.
doi:10.1063/1.1691502 .

Šiljegović, Milorad, Dobrosavljević, Aleksandar S., Beličev, Petar, "Optimization of the mVINIS ion source extraction system" in Review of Scientific Instruments, 75, no. 5 (2004):1506-1507,
https://doi.org/10.1063/1.1691502 . .

TY  - JOUR
AU  - Beličev, Petar
AU  - Šiljegović, Milorad
AU  - Dobrosavijevic, A
AU  - Keskovic, N
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6447
AB  - The channel for modification of materials (L3A) of the Tesla Accelerator Installation, in the Vinca Institute of Nuclear Sciences, connected to the mVINIS ion source, consists of an ion beam transport line and an interaction chamber enabling the ion beam assisted deposition. The 8.4 m long beam line, starting at an analyzing slit after an analyzing magnet, contains two electrostatic quadrupole triplet lenses: a 90degrees bending magnet and an electrostatic beam scanner. The maximal beam transmission coefficient, e.g., for 60 keV N4+ beam, has not exceeded 30%. At the time the beam line was designed, the mVINIS ion source was not commissioned, so that the emittances of the beams it delivered were underestimated. This is one of the reasons for the low transmission performance of the beam line. In this article the results of the beam line acceptance calculations are presented and compared with the measured beam emittances. The calculations are based on the transfer matrix formalism with no space charge taken into account. The suggestions for improving the beam transmission performance of the beam line are given. (C) 2004 American Institute of Physics.
T2  - Review of Scientific Instruments
T1  - Acceptance of the channel for modification of materials (L3A) of the Tesla accelerator installation
VL  - 75
IS  - 5
SP  - 1678
EP  - 1680
DO  - 10.1063/1.1695642
ER  - 

@article{
author = "Beličev, Petar and Šiljegović, Milorad and Dobrosavijevic, A and Keskovic, N",
year = "2004",
abstract = "The channel for modification of materials (L3A) of the Tesla Accelerator Installation, in the Vinca Institute of Nuclear Sciences, connected to the mVINIS ion source, consists of an ion beam transport line and an interaction chamber enabling the ion beam assisted deposition. The 8.4 m long beam line, starting at an analyzing slit after an analyzing magnet, contains two electrostatic quadrupole triplet lenses: a 90degrees bending magnet and an electrostatic beam scanner. The maximal beam transmission coefficient, e.g., for 60 keV N4+ beam, has not exceeded 30%. At the time the beam line was designed, the mVINIS ion source was not commissioned, so that the emittances of the beams it delivered were underestimated. This is one of the reasons for the low transmission performance of the beam line. In this article the results of the beam line acceptance calculations are presented and compared with the measured beam emittances. The calculations are based on the transfer matrix formalism with no space charge taken into account. The suggestions for improving the beam transmission performance of the beam line are given. (C) 2004 American Institute of Physics.",
journal = "Review of Scientific Instruments",
title = "Acceptance of the channel for modification of materials (L3A) of the Tesla accelerator installation",
volume = "75",
number = "5",
pages = "1678-1680",
doi = "10.1063/1.1695642"
}

Beličev, P., Šiljegović, M., Dobrosavijevic, A.,& Keskovic, N.. (2004). Acceptance of the channel for modification of materials (L3A) of the Tesla accelerator installation. in Review of Scientific Instruments, 75(5), 1678-1680.
https://doi.org/10.1063/1.1695642

Beličev P, Šiljegović M, Dobrosavijevic A, Keskovic N. Acceptance of the channel for modification of materials (L3A) of the Tesla accelerator installation. in Review of Scientific Instruments. 2004;75(5):1678-1680.
doi:10.1063/1.1695642 .

Beličev, Petar, Šiljegović, Milorad, Dobrosavijevic, A, Keskovic, N, "Acceptance of the channel for modification of materials (L3A) of the Tesla accelerator installation" in Review of Scientific Instruments, 75, no. 5 (2004):1678-1680,
https://doi.org/10.1063/1.1695642 . .

TY  - JOUR
AU  - Nešković, Nebojša B.
AU  - Ristić-Đurović, Jasna L.
AU  - Vorojtsov, SB
AU  - Beličev, Petar
AU  - Ivanenko, IA
AU  - Cirkovic, S
AU  - Vorozhtsov, AS
AU  - Bojović, Boško
AU  - Dobrosavljević, Aleksandar S.
AU  - Vujović, Velibor V.
AU  - Čomor, Jožef J.
AU  - Pajović, Snežana B.
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6381
AB  - The VINCY Cyclotron is the main part of the TESLA Accelerator Installation. The diameter of the pole of this machine is 2000 mm. Its bending constant is 145 MeV while its focusing constant is 75 MeV. The radiofrequency system of the machine consists of two lambda/4-resonators with the eigenfrequency in the range from 17 to 31 MHz. Ions coming from a heavy ion source or a light ion source will be injected into the machine axially. They will be introduced into its median plane by a spiral inflector. Heavy ions accelerated in the machine will be extracted from it by a foil stripping system or by an electrostatic deflection system. Light ions will be extracted from it by the foil stripping system. The first programs of use of the VINCY Cyclotron are related to routine and experimental production of radioisotopes and radiopharmaceuticals, and to biomedical research with ion beams. The first beam extracted from the machine will be the proton beam of the energy of 22 MeV obtained from the H-2(+) beam extracted from the light ion source. This beam will be used first for production of radioisotope F-18 and radiopharmaceutical (18)FDG, to be employed for positron emission tomography.
T2  - Nukleonika
T1  - Status report of the VINCY cyclotron
VL  - 48
SP  - S135
EP  - S139
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6381
ER  - 

@article{
author = "Nešković, Nebojša B. and Ristić-Đurović, Jasna L. and Vorojtsov, SB and Beličev, Petar and Ivanenko, IA and Cirkovic, S and Vorozhtsov, AS and Bojović, Boško and Dobrosavljević, Aleksandar S. and Vujović, Velibor V. and Čomor, Jožef J. and Pajović, Snežana B.",
year = "2003",
abstract = "The VINCY Cyclotron is the main part of the TESLA Accelerator Installation. The diameter of the pole of this machine is 2000 mm. Its bending constant is 145 MeV while its focusing constant is 75 MeV. The radiofrequency system of the machine consists of two lambda/4-resonators with the eigenfrequency in the range from 17 to 31 MHz. Ions coming from a heavy ion source or a light ion source will be injected into the machine axially. They will be introduced into its median plane by a spiral inflector. Heavy ions accelerated in the machine will be extracted from it by a foil stripping system or by an electrostatic deflection system. Light ions will be extracted from it by the foil stripping system. The first programs of use of the VINCY Cyclotron are related to routine and experimental production of radioisotopes and radiopharmaceuticals, and to biomedical research with ion beams. The first beam extracted from the machine will be the proton beam of the energy of 22 MeV obtained from the H-2(+) beam extracted from the light ion source. This beam will be used first for production of radioisotope F-18 and radiopharmaceutical (18)FDG, to be employed for positron emission tomography.",
journal = "Nukleonika",
title = "Status report of the VINCY cyclotron",
volume = "48",
pages = "S135-S139",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6381"
}

Nešković, N. B., Ristić-Đurović, J. L., Vorojtsov, S., Beličev, P., Ivanenko, I., Cirkovic, S., Vorozhtsov, A., Bojović, B., Dobrosavljević, A. S., Vujović, V. V., Čomor, J. J.,& Pajović, S. B.. (2003). Status report of the VINCY cyclotron. in Nukleonika, 48, S135-S139.
https://hdl.handle.net/21.15107/rcub_vinar_6381

Nešković NB, Ristić-Đurović JL, Vorojtsov S, Beličev P, Ivanenko I, Cirkovic S, Vorozhtsov A, Bojović B, Dobrosavljević AS, Vujović VV, Čomor JJ, Pajović SB. Status report of the VINCY cyclotron. in Nukleonika. 2003;48:S135-S139.
https://hdl.handle.net/21.15107/rcub_vinar_6381 .

Nešković, Nebojša B., Ristić-Đurović, Jasna L., Vorojtsov, SB, Beličev, Petar, Ivanenko, IA, Cirkovic, S, Vorozhtsov, AS, Bojović, Boško, Dobrosavljević, Aleksandar S., Vujović, Velibor V., Čomor, Jožef J., Pajović, Snežana B., "Status report of the VINCY cyclotron" in Nukleonika, 48 (2003):S135-S139,
https://hdl.handle.net/21.15107/rcub_vinar_6381 .

TY  - JOUR
AU  - Beličev, Petar
AU  - Altiparmakov, DV
PY  - 2001
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2406
AB  - This paper presents a new analytical approximation of the electric field in the spiral inflector. It is based on R-function formalism and derived according to the geometric shape of the inflector including the grounded electrodes. A comparison against finite difference solution is given in order to illustrate the validity of the approximation. Also, the results of stochastic ion beam simulation are presented. They clearly show that the proposed approximation yields a very good agreement with the real electric field. (C) 2001 Elsevier Science B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
T1  - An efficient electric field approximation for spiral inflector calculations
VL  - 456
IS  - 3
SP  - 177
EP  - 189
DO  - 10.1016/S0168-9002(00)00582-9
ER  - 

@article{
author = "Beličev, Petar and Altiparmakov, DV",
year = "2001",
abstract = "This paper presents a new analytical approximation of the electric field in the spiral inflector. It is based on R-function formalism and derived according to the geometric shape of the inflector including the grounded electrodes. A comparison against finite difference solution is given in order to illustrate the validity of the approximation. Also, the results of stochastic ion beam simulation are presented. They clearly show that the proposed approximation yields a very good agreement with the real electric field. (C) 2001 Elsevier Science B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment",
title = "An efficient electric field approximation for spiral inflector calculations",
volume = "456",
number = "3",
pages = "177-189",
doi = "10.1016/S0168-9002(00)00582-9"
}

Beličev, P.,& Altiparmakov, D.. (2001). An efficient electric field approximation for spiral inflector calculations. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 456(3), 177-189.
https://doi.org/10.1016/S0168-9002(00)00582-9

Beličev P, Altiparmakov D. An efficient electric field approximation for spiral inflector calculations. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 2001;456(3):177-189.
doi:10.1016/S0168-9002(00)00582-9 .

Beličev, Petar, Altiparmakov, DV, "An efficient electric field approximation for spiral inflector calculations" in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 456, no. 3 (2001):177-189,
https://doi.org/10.1016/S0168-9002(00)00582-9 . .