Mars14 Monte Carlo simulation for the shielding studies of the J-PARC 3 GeV ring.
MARS14 Monte Carlo simulations were performed for collimation and shielding studies of the J-PARC 3 GeV synchrotron ring. The beam line module locations in the 348.3 m ring and the curved tunnel sections were described by the 'MAD-MARS beam line builder' tool. A 400 MeV proton beam loss distribution, calculated with the STRUCT code, was used as a 4 kW source term in the collimator region, with 1 kW source terms in the injection and extraction regions at 400 MeV and 3 GeV, respectively. Deep penetration calculations were carried out with good statistics using a newly developed three-dimensional multi-layer technique. Prompt dose-rate distributions were calculated inside and outside the concrete and soil shield up to the ground level. Using the calculation results obtained thus, an effective shielding design was made.
Nakao
Noriaki
N
High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan. noriaki.nakao@kek.jp
Mokhov
Nikolai
N
Yamamoto
Kazami
K
Irie
Yoshiro
Y
Drozhdin
Alexander
A
D000465:Algorithms; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007564:Japan; D015233:Models, Statistical; D009010:Monte Carlo Method; D011522:Protons; D011829:Radiation Dosage; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods*; D011874:Radiometry / Q000379:methods*; D017356:Synchrotrons / Q000295:instrumentation*
D011522:Protons