Effect of injection energy on residual dose around the charge exchange foil

被引：2

作者：

Yamamoto, Kazami ^{[1
]}

Kato, Shinichi ^{[2
]}

机构：

[1] JAEA, Tokai, Ibaraki 3191195, Japan

[2] Tohoku Univ, Sendai, Miyagi 9808578, Japan

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2012年 / 15卷 / 12期

关键词：

D O I：

10.1103/PhysRevSTAB.15.120401

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The rapid cycling synchrotron (RCS) of Japan Proton Accelerator Research Complex (J-PARC) and the accumulator ring (AR) of Spallation Neutron Source (SNS) can be used as high-power pulsed neutron sources. In both cases, the injection region becomes one of the highest activation areas in the ring. However, residual dose distributions have revealed that the highest activation points in the J-PARC RCS and the SNS AR are different in detail. The dose of the charge exchange chamber in the SNS is more than 100 times larger than that of the RCS though the ratio of beam power is less than 10. We investigated the reason of this difference by GEANT4 and MARS, and the calculation results indicated that the difference was due to the dependence of the neutron and pion production rate on the injection energy. DOI: 10.1103/PhysRevSTAB.15.120401

引用

页数：4

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