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展望Prospect
高エネルギー・高強度電子加速器の二次粒子場の特性評価に係わる研究Study on specific properties of secondary particle field on high energy and intensity electron accelerator
高エネルギー加速器研究機構 放射線科学センターRadiation science center, High energy accelerator research organization佐波俊哉 [email protected]
Beam dump design of LCLS at SLAC national accelerator Laboratory
Measurement of neutron energy spectrum at KEK slow positron facility
中性子エネルギー分布の実測 KEK 低速陽電子施設
調査研究 SLAC国立加速器研究所 LCLS
LCLS-II is under construction in addition to LCLSSuper conducting LINAC, Electron beam up to 15 GeV, 5 kW at maximumHar X-ray (2-13 keV) and Soft X-ray (0.25-2 keV)
物性研究で用いられる二次ビーム生成用加速器による生成放射線場の特性評価の調査研究Specific properties on secondary particle field in accelerator facility for secondary particle generation for material sciences
自由電子レーザー光の加速器と低速陽電子の加速器の調査研究と二次粒子の実測Study tour and measurement of secondary particles for accelerators of free electron laser (SLAC) and slow positron generation(KEK).
物質研究に用いられている電子加速器は同様の出力を有している。ターゲットとビームダンプを工夫し複数の目的に利用される加速器が望ましいSince electron accelerators for material sciences have similar beam power, it is desirable that single accelerator for multi-purpose experiment with designing target and beam dump.
KEK
自由電子レーザー
KEK低速陽電子
Normal conducting LINAC, Electron beam 60 MeV, 0.6 kW5×107 slow e+/secNeutron spectrum measurement and calculation to study behavior of secondary radiation
Main beam dump for spent electron beam is located at underground with heavy shielding to reduce leakage radiation.
Main beam dump
AIST Bonner sphere neutron spectrometer
PHITS simulation geometry and neutron flux
Slow positron production target and beam dump Neutron energy spectrum
SLAC LCLS undulator tunnel SLAC LCLS undulator tunnelXiao, Shanjie "Radiation Safety Studies for LCLS-II Experiment Systems" SLAC Pub SLAC-PUB-16482
LCLS dump lineM.Santana et.al., “BEAM DUMPS OF THE NEW LCLS-II “IPAC2014, Dresden, Germany
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