Angular distributions of 7 TeV protons axially channeled through the thin bent (100) Si crystal
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2006
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We have studied theoretically angular distributions of relativistic protons axially channeled through the thin bent LT 100 GT Si crystal. The proton energy is 7 TeV, the thickness of the crystal is 1 mm, which corresponds to the reduced crystal thickness, Lambda, equal to 2.1, while the bending angle, alpha, is varied from 0.002 to 0.020 mrad. The angular distributions of axially channeled protons are generated by the computer simulation method using the numerical solution of the ion equations of motion, with the Lindhards expression for the continuum interaction potential of the ion and the crystal. Uncertainness of the scattering angle of the proton caused by its collisions with the electrons of the crystal and proton (electronic) energy loss are taken into account. The results of the analysis show that the two additional maxima appear in the angular distributions, for the bending angles alpha LT = 0.006 mrad. They originate from four areas in the impact parameter plane located in be...tween atomic strings defining the channel that correspond to the saddle points of the continuum potential. The obtained deflection efficiency curve has an inflection point, which can be attributed to the disappearing of the two additional maxima in the angular distribution. We have also studied the dependence of the deflection efficiency on the length of the crystal when the deflection angle is equal to 0.1 mrad, regarding the possible application of the crystal channeling for halo collimation of the proton beam in the Large Hadron Collider (LHC) project, at the European Organization for Nuclear Research (CERN).
Ključne reči:
relativistic channeling / bent crystalIzvor:
Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2006, 244, 2, 457-461
DOI: 10.1016/j.nimb.2005.10.030
ISSN: 0168-583X
WoS: 000235722600023
Scopus: 2-s2.0-77953233586
Institucija/grupa
VinčaTY - JOUR AU - Stojanov, Nace AU - Petrović, Srđan M. AU - Nešković, Nebojša B. PY - 2006 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2984 AB - We have studied theoretically angular distributions of relativistic protons axially channeled through the thin bent LT 100 GT Si crystal. The proton energy is 7 TeV, the thickness of the crystal is 1 mm, which corresponds to the reduced crystal thickness, Lambda, equal to 2.1, while the bending angle, alpha, is varied from 0.002 to 0.020 mrad. The angular distributions of axially channeled protons are generated by the computer simulation method using the numerical solution of the ion equations of motion, with the Lindhards expression for the continuum interaction potential of the ion and the crystal. Uncertainness of the scattering angle of the proton caused by its collisions with the electrons of the crystal and proton (electronic) energy loss are taken into account. The results of the analysis show that the two additional maxima appear in the angular distributions, for the bending angles alpha LT = 0.006 mrad. They originate from four areas in the impact parameter plane located in between atomic strings defining the channel that correspond to the saddle points of the continuum potential. The obtained deflection efficiency curve has an inflection point, which can be attributed to the disappearing of the two additional maxima in the angular distribution. We have also studied the dependence of the deflection efficiency on the length of the crystal when the deflection angle is equal to 0.1 mrad, regarding the possible application of the crystal channeling for halo collimation of the proton beam in the Large Hadron Collider (LHC) project, at the European Organization for Nuclear Research (CERN). T2 - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms T1 - Angular distributions of 7 TeV protons axially channeled through the thin bent (100) Si crystal VL - 244 IS - 2 SP - 457 EP - 461 DO - 10.1016/j.nimb.2005.10.030 ER -
@article{ author = "Stojanov, Nace and Petrović, Srđan M. and Nešković, Nebojša B.", year = "2006", abstract = "We have studied theoretically angular distributions of relativistic protons axially channeled through the thin bent LT 100 GT Si crystal. The proton energy is 7 TeV, the thickness of the crystal is 1 mm, which corresponds to the reduced crystal thickness, Lambda, equal to 2.1, while the bending angle, alpha, is varied from 0.002 to 0.020 mrad. The angular distributions of axially channeled protons are generated by the computer simulation method using the numerical solution of the ion equations of motion, with the Lindhards expression for the continuum interaction potential of the ion and the crystal. Uncertainness of the scattering angle of the proton caused by its collisions with the electrons of the crystal and proton (electronic) energy loss are taken into account. The results of the analysis show that the two additional maxima appear in the angular distributions, for the bending angles alpha LT = 0.006 mrad. They originate from four areas in the impact parameter plane located in between atomic strings defining the channel that correspond to the saddle points of the continuum potential. The obtained deflection efficiency curve has an inflection point, which can be attributed to the disappearing of the two additional maxima in the angular distribution. We have also studied the dependence of the deflection efficiency on the length of the crystal when the deflection angle is equal to 0.1 mrad, regarding the possible application of the crystal channeling for halo collimation of the proton beam in the Large Hadron Collider (LHC) project, at the European Organization for Nuclear Research (CERN).", journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms", title = "Angular distributions of 7 TeV protons axially channeled through the thin bent (100) Si crystal", volume = "244", number = "2", pages = "457-461", doi = "10.1016/j.nimb.2005.10.030" }
Stojanov, N., Petrović, S. M.,& Nešković, N. B.. (2006). Angular distributions of 7 TeV protons axially channeled through the thin bent (100) Si crystal. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 244(2), 457-461. https://doi.org/10.1016/j.nimb.2005.10.030
Stojanov N, Petrović SM, Nešković NB. Angular distributions of 7 TeV protons axially channeled through the thin bent (100) Si crystal. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2006;244(2):457-461. doi:10.1016/j.nimb.2005.10.030 .
Stojanov, Nace, Petrović, Srđan M., Nešković, Nebojša B., "Angular distributions of 7 TeV protons axially channeled through the thin bent (100) Si crystal" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 244, no. 2 (2006):457-461, https://doi.org/10.1016/j.nimb.2005.10.030 . .