...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment >Optimization of a slab geometry type cold neutron moderator for RIKEN accelerator-driven compact neutron source
【24h】

Optimization of a slab geometry type cold neutron moderator for RIKEN accelerator-driven compact neutron source

机译：riken加速器驱动紧凑型压缩中子源的平板几何型冷中子主持机优化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We have optimized a cold neutron moderator to be operated at the RIKEN accelerator-driven compact neutron source (RANS) to broaden cold neutron applications and provide more choices for RANS users. We selected a safe and easy to manage material, mesitylene, as the RANS cold moderator. An efficient moderator system was designed by studying and optimizing a coupled cold neutron moderator of mesitylene at 20 K with a polyethylene (PE) pre-moderator at room temperature in the slab geometry with Particle and Heavy Ion Transport code System (PHITS) simulations. The parameters of mesitylene and PE thickness, the reflector, and the shielding configuration were studied to increase cold neutron intensities within [0.1 meV, 10 meV] and thermal neutron intensities within [10 meV, 100 meV]. Consequently, an integrated cold neutron intensity of 1.15 ×10~3n/cm~2/μA at 2 m from the neutron-producing target was finally achieved, which was 12 times higher than that of the current RANS moderator with 4 cm PE according to simulation results. The cold and thermal neutron intensities of the optimized cold neutron moderator was compared with a cold neutron source based on solid methane, which has a beryllium target and the same proton energy as RANS. The results showed attractive application prospect of mesitylene as cold neutron moderator material.
机译：我们优化了在Riken Accelerator驱动的紧凑功能（RANS）上操作的冷中子主持机，以拓宽寒冷中子应用，并为Rans用户提供更多选择。我们选择了一个安全且易于管理的材料，Mesitylene，作为Rans冷调节器。通过在与颗粒和重离子传输代码系统（PHITS）模拟的平板几何形状的室温下，通过在20K下使用聚乙烯（PE）预调节器，在20K处的Mesitylene的耦合冷中子剂量，通过在20K处的偶联的冷中子调节剂中设计和优化高效的主持人系统。研究了Mesitylene和PE厚度，反射器和屏蔽配置的参数，以增加[01mev，10 mev]和[10mev，100 mev]内的热中子强度内的冷中子强度。因此，最终实现了从中子生成靶标的2米处为1.15×10〜3N / cm〜2 /μA的集成的冷中子强度，这是与4cm PE的电流RAN主持人高12倍。仿真结果。将优化的冷中子剂调节剂的冷热中子强度与基于固体甲烷的冷中子源进行比较，该甲烷具有铍靶和与RAN相同的质子能量。结果表明，Mesitylene作为冷中子式调色剂材料的吸引力。

著录项

  • 来源
  • 作者

    Baolong Ma; Makoto Teshigawara; Yasuo Wakabayashi; Mingfei Yan; Takao Hashiguchi; Yutaka Yamagata; Sheng Wang; Yujiro Ikeda; Yoshie Otake;

  • 作者单位

    Department of Nuclear Science and Technology School of Energy and Power Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China RIKEN Center for Advanced Photonics RIKEN Wako Saitama 351-0198 Japan;

    J-PARC Center Japan Atomic Energy Agency Naka-gun Ibaraki 319-1195 Japan;

    RIKEN Center for Advanced Photonics RIKEN Wako Saitama 351-0198 Japan;

    RIKEN Center for Advanced Photonics RIKEN Wako Saitama 351-0198 Japan;

    RIKEN Center for Advanced Photonics RIKEN Wako Saitama 351-0198 Japan;

    RIKEN Center for Advanced Photonics RIKEN Wako Saitama 351-0198 Japan;

    Department of Nuclear Science and Technology School of Energy and Power Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China RIKEN Center for Advanced Photonics RIKEN Wako Saitama 351-0198 Japan;

    RIKEN Center for Advanced Photonics RIKEN Wako Saitama 351-0198 Japan J-PARC Center Japan Atomic Energy Agency Naka-gun Ibaraki 319-1195 Japan;

    Department of Nuclear Science and Technology School of Energy and Power Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China RIKEN Center for Advanced Photonics RIKEN Wako Saitama 351-0198 Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cold neutron; CANS; Mesitylene; Coupled moderator; Slab geometry; PHITS;

    机译：冷中子;罐头;梅西纳;耦合主持人;板坯几何;课程;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号