主注入器光束提取到NuMi光束线的辐射环境

A. Drozhdin, P. Lucas, N. Mokhov, C. Moore, S. Striganov
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引用次数: 1

摘要

一个120 GeV的主注入器质子束将以每年3.7/spl次/10/sup / 20/的速度输送到费米实验室的NuMI束流线。采用蒙特卡罗仿真方法对光束提取系统的辐射环境和NuMI光束线元进行了仿真研究。利用计算机代码MARS实现了160米提取区域的完整三维模型。该模型包括静电区场的描述和泊松计算的兰伯森磁体和区域内其他晶格分量的场图。利用STRUCT程序对波束单元对准和源项进行了模拟。给出了系统中的光束损耗、核心元件中的能量沉积和元件上的残余剂量率的计算结果。
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Radiation environment resulting from Main Injector beam extraction to the NuMi beam line
A 120 GeV Main Injector proton beam will be delivered to the NuMI beam line at Fermilab at the rate of 3.7/spl times/10/sup 20/ per year. Realistic Monte Carlo simulations have been performed to examine the radiation environment in the beam extraction system and NuMI beam line elements. A complete 3-D model of the 160 meter extraction region has been implemented utilizing the computer code MARS. The model includes a description of the field of the electrostatic septa and POISSON calculated field maps of the Lambertson magnets and the other lattice components in the area. The beam element alignment and the source term have been simulated using the code STRUCT. Results on beam losses in the system, energy deposition in the core elements and residual dose rates on the components are presented.
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