Radiation calculations for the ILC cryomodule

[摘要] The MARS15 radiation simulations were performed for the ILC cryomodule. The model assumes a uniform beam loss intensity of 1 W/m of 750-MeV and 250-GeV electron along the inner surface of the beam pipe and the cavity iris of the 12-m cryomodule. Two-dimensional distributions of radiation dose in the module were obtained. Absorbed dose rate and energy spectra of electrons, photons, neutrons and protons were also obtained at the three cryogenic thermometers locations by filling with silicon material in the appropriate locations, and radiation hardness of the thermometers was discussed. From the obtained results, maximum absorbed dose of thermometers at the cooling pipe is 0.85mGy/sec (85 mRad/sec), that is 0.31 MGy (31 MRad) for 20 years.

[发布日期] 2007-04-01

[学科分类] 核物理和高能物理

[关键词] CRYOGENICS;ELECTRONS;ENERGY SPECTRA;HARDNESS;NEUTRONS;PHOTONS;PROTONS;RADIATION DOSES;RADIATIONS;SILICON;THERMOMETERS Accelerators