Title :
Beam study with RF choppers in the MEBT of the J-PARC proton linac
Author :
Kato, Takao ; Ikegami, Masanori ; Wang, Sheng ; Fu, Shinian
Author_Institution :
KEK, Tsukuba, Japan
Abstract :
A beam study of the RF fast chopper system in the MEBT of the J-PARC linac was successfully performed up to a beam current of 25 mA. The achieved rise/fall time of the chopped beam was about 10 ns. A beam signal during the chopper-on period, measured at the exit of the MEBT, was less than the noise level of the monitor systems. A flexible pattern of the chopped pulse train was achieved, which is useful for various kinds of operating pulse modes of the J-PARC accelerator.
Keywords :
beam choppers; linear accelerators; particle beam diagnostics; proton accelerators; 10 ns; 25 mA; J-PARC proton linac; MEBT; RF fast chopper system; beam current; beam signal; beam study; chopped beam; chopped pulse train; monitor systems; pulse modes; Choppers; Linear particle accelerator; Noise level; Optical coupling; Particle beams; Power amplifiers; Protons; Radio frequency; Radiofrequency amplifiers; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1288559
