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Calibration of Marinelli vessels for measurement of radioactive environmental samples
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1997)
In order to measure low-activity radioactive environmental samples, both in liquid and solid phases, the use of Marinelli (reentrant) beakers is recommended. Standards were prepared by mixing of standardized radioactive ...
Energy and time spreads of the ion beam caused by the spiral inflector
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1998)
The spiral inflector (Root, M.S. Thesis, Ph.D. Thesis, University of British Columbia), as a part of the axial injection system of a cyclotron, is designed to inflect the ion beam with the introduction of a negligible ...
Beam orbit simulation in the central region of the RIKEN AVF cyclotron
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1999)
This paper describes the modification design of the central region for h = 2 mode of acceleration in the RIKEN AVF cyclotron. we made a small modification to the electrode shape in the central region for optimization of ...
Detection limits of the NaI(Tl) shielded HPGe spectrometer
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1999)
The results of a detailed study of the low-level performance of a NaI(Tl) shield added to an iron shielded HPGe spectrometer are presented. Both the slow and the fast anticoincidence gating modes were tested, the slow mode ...
Design of the central region for axial injection in the VINCY cyclotron
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1996)
This paper describes the design of the central region for h = 1, h = 2 and h = 4 modes of acceleration in the VINCY cyclotron. The result which is worth reported in that the central region is unique and compatible with the ...
User-friendly Monte Carlo program for the generation of gamma-ray spectral responses in complex source-detector arrangements
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1998)
The Monte Carlo program has been developed which generates the spectral responses of gamma-ray spectrometers (NaI, Ge, etc.) for radiations of arbitrarily complex composition and for easily definable disposition of sources, ...
Some optical properties of the spiral inflector
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1999)
This paper compares some optical properties of different spiral inflectors using the program CASINO. The electric field distribution in the inflectors has been numerically calculated from an electric potential map produced ...
Detuned primary RF coupling system for variable frequency cyclotrons
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1998)
A new concept of impedance matching for an RF amplifier coupled to a cyclotron cavity, named detuned primary coupling, is proposed. It does not require the motion of the coupling loop in vacuum and the matching for different ...
Application of a precise fiber-optical dee position measurement system in the cyclotron RF system design
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1999)
A new fiber-optical dee position measurement system is developed for the VINCY cyclotron. The system includes a sensor head, a coherent optical fiber bundle and a light detector with control electronics. The sensor head ...