Development of curved solenoid for intense pulsed muon generation

开发用于强脉冲μ子产生的弯曲螺线管

• 批准号: 22244033
• 负责人: SHIMOMURA Koichiro
• 金额: $ 29.45万
• 依托单位: High Energy Accelerator Research Organization
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22244033/
• 关键词: ミュオン; 超伝導電磁石; ビームライン; 高放射線場; 超伝導磁石

We developed Super Omega for intense pulsed muon generation at J-PARC MUSE. The Super Omega is composed of three parts, a normal conducting capture solenoid, a superconducting curved transport solenoid and a superconducting axial focusing solenoid. The muon beam in the U-line is extracted at a 45 degree angle with respect to the proton beamline in the backward direction of the muon production target. The capture solenoid has a large solid angle acceptance of 400 msr, so that a large amount of muons can be captured and focused at the entrance of the curved solenoid. The curved solenoid has two curved sections of 45 degree each of opposite direction, and a 6 m long straight section. The axial focusing solenoid further transports the muons linearly 8 m in the experimental hall. The Super Omega was installed in the summer of 2012. The obtained muon rate is currently the highest intensity surface muon source in the world.

我们在 J-PARC MUSE 开发了用于产生强脉冲 μ 介子的 Super Omega。 Super Omega由三部分组成：常导捕获螺线管、超导弯曲传输螺线管和超导轴向聚焦螺线管。 U线的μ介子束相对于μ介子产生靶的后方的质子射束线以45度角被引出。捕获螺线管具有400msr的大立体角接受能力，从而可以捕获大量μ子并聚焦在弯曲螺线管的入口处。弯曲螺线管有两个方向相反的 45 度弯曲段和一个 6 m 长的直线段。轴向聚焦螺线管进一步将μ子在实验厅内线性传输8 m。 Super Omega于2012年夏天安装。获得的μ子率是目前世界上强度最高的表面μ子源。

项目成果

The H line: a brand new beam line for fundamental physics at the J-PARC muon facility

H 线：J-PARC muon 设施的基础物理全新光束线

• DOI: 10.1088/1742-6596/408/1/012072
• 发表时间: 2013
• 期刊: Conf. Ser.
• 作者: N. Kawamura;A. Toyoda;M. Aoki;N. Saito;S. Mihara;K. Shimomura;and Y. Miyake;J. Phys.
• 通讯作者: J. Phys.

Ultra Slow Muon Microscopy for Nano-science

用于纳米科学的超慢 μ 子显微镜

• DOI: 10.1088/1742-6596/302/1/012038
• 发表时间: 2011
• 期刊: Cof. Ser.
• 作者: Y. Miyake;N. Nishida;J. Yoshino;W. Higemoto;E. Torikai;K. Shimomura;Y. Ikedo;N. Kawamura;P. Strasser;S. Makimura;H. Fujimori;K. Nakahara;A. Koda;Y. Kobayashi;K. Nishiyama;R. Kadono;T. Ogitsu;Y. Makida;K. Sasaki;T. Adachi;and K. Nagamin
• 通讯作者: and K. Nagamin

ミュオニウムの超微細構造の精密測定に向けての開発現状

锷超细结构精密测量研究进展

• 发表时间: 2013
• 作者: P. Doornenbal;N. Kobayashi;et al.;さこ隆志;H. Tamura;下村浩一郎
• 通讯作者: 下村浩一郎

KEK物質構造科学研究所ミュオン科学研究系

KEK材料结构科学研究所μ介子科学研究部

Cryogenic Design of a Superconducting Solenoid for Muonium Hyperfine Structure Measurement

用于μ超精细结构测量的超导螺线管的低温设计

• DOI: 10.1109/tasc.2012.2233259
• 发表时间: 2013
• 期刊: IEEE Trans. Appl. Supercond.
• 作者: M. Sugano;K. Sasaki;R. Ohkubo;T. Kume;N. Kimura;R. Okada;T. Okamura;K. Shimomura;N;Saito;T. Ogitsu;and A. Yamamoto
• 通讯作者: and A. Yamamoto