Feschenko, A.
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ION MONITOR OF TRANSVERSE BEAM PARAMETERS FOR INR PROTON LINAC |
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P. Reinhardt-Nickoulinª, A. Feschenko, S. Gavrilov Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia Abstract Residual gas ion monitor was developed and installed on INR Proton LINAC output to provide non-intercepting measurements of beam position, transverse section form and beam profiles for wide energy and amplitude range. The ion transverse section monitor details and TV image processing system are described. The available results of beam pulse measurements are presented. ª – corresponding author |
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MODERNIZATION OF BCT FOR INR LINAC |
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P. Reinhardt-Nikoulinª, A. Feschenko, A. Mirzojan Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia Abstract The INR Linear Accelerator beam is now 10÷12 mA amplitude with pulse duration 0.3÷200 microseconds and the repetition rate 1÷50 Hz. It is necessary for various nuclear experiments and applications. The Beam Current Transformers (BCT) system was modernized to provide higher sensitivity of beam current pulse measurements. New BCT electronics was developed and installed also. This electronics was tested in high radiation conditions of experimental areas successfully. Besides that new wide bandwidth BCT Monitor was developed, tested and installed for measurements both short and long beam current pulses. The available results of beam pulse measurements are given. New BCT details are described. ª – corresponding author |
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PECULIARITIES OF BUNCH SHAPE MEASUREMENTS OF H-MINUS BEAMS IN LINEAR ACCELERATORS |
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A. Denisov¹, A. Feschenkoª¹, A. Aleksandrov² ¹Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia ²Oak Ridge National Laboratory, Oak Ridge, USA Abstract When measuring a bunch shape of H-minus beam with the bunch shape monitor (BSM) based on a transverse scanning of low energy secondary electrons the difficulties due to presence of detached electrons arise. Fraction of the detached electrons gets into the optical channel of BSM and produce additional signals thus distorting measurement data. The results of simulation of interaction of the electrons with the BSM target and analysis of their subsequent motion in BSM electron optical channel are presented. Distortions of the measurement results are discussed. It is demonstrated both by simulations and experimentally that energy separation of the electrons essentially decreases the distortions. Other possible reasons of errors are also discussed. ª – corresponding author |
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