Title :
Study of halo formation in J-PARC-MR
Author :
Ohmi, K. ; Igarashi, S. ; Koseki, T. ; Koiso, H. ; Oide, K.
Author_Institution :
KEK, Tsukuba
Abstract :
J-PARC is a high intensity proton facility which is constructing as a joint project JAEA-KEK in Japan. J-PARC equips two proton ring accelerators, rapid cycle synchrotron (RCS) and Main Ring (MR). We discuss the space charge effect of MR in this paper. The proton beam with the population of 4.15 times 1013 times 8 bunches is accelerated from 3 GeV to 50 GeV and extracted with 0.3 Hz in MR. Beam loss during the acceleration is caused by an incoherent emittance growth due to the space charge force. We discuss the emittance growth and halo formation using a computer simulation based on the particle in cell method.
Keywords :
particle beam bunching; proton accelerators; proton beams; space charge; synchrotrons; J-PARC-MR; Main Ring; RCS; Rapid Cycle Synchrotron; beam loss; bunch population; halo formation; particle in cell method; proton beam; proton ring accelerators; space charge effect; Acceleration; Clouds; Computer simulation; Electron beams; Fluctuations; Nonlinear systems; Particle beams; Protons; Space charge; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440411
