Research of the Selective Beam Extraction Method for the High Energy Electron Beam in the Storage Ring

存储环内高能电子束选择性束流提取方法的研究

• 批准号: 16540245
• 负责人: SHIRAI Toshiyuki
• 金额: $ 2.37万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16540245/
• 关键词: Accelerator; Electron Ring; Slow Beam Extraction; 電子ビーム; ストレッチャー; ビーム取り出し

We worked for a development of the new beam extraction method from the electron synchrotron with the support of Grant-in-Aid for Scientific Research (C). The experiments were done at the electron storage ring, KSR at Institute for Chemical Research, Kyoto University. The electron beam of 60 MeV was stored in the ring and successfully extracted very slowly to the experimental target. The electron beam rate was about 10^4 e-/sec at the target and the extraction period was 1000 seconds without new injections. The scattering of the electron beam with the residual gas was utilized in this new extraction method. In order to control the extraction beam rate, the transverse RF field and the injection beam intensity were adjusted. As a result, the beam rate was controlled from 10^3 e-/sec to 10^7 e-/sec.The applications of this very slow extracted beam have already started. The test of the Liquid Xe detector for rare decay search was carried out by the group of Tokyo University and KEK. The test of the electron detectors for "Self-Confining Radioactive ion Target (SCRIT)" was also done by the group of RIKEN. Some R＆D programs of the new detectors were also carried out, such as a new straw chamber by the group of Osaka University, an aerogel Cherenkov Counter by the group of Kyoto University and a new beam monitor using a micro channel plate (MCP)by the group of Kyoto University.

我们在科学研究补助金（C）的支持下，致力于开发电子同步加速器的新光束提取方法。实验是在京都大学化学研究所的电子储存环KSR上进行的。60 MeV的电子束储存在环中，并成功地提取非常缓慢的实验目标。靶上的电子束速率约为10^4 e-/sec，提取周期为1000秒，无需新的注入。在这种新的提取方法中，利用了电子束与残余气体的散射。通过调节横向射频场和注入光束强度来控制引出光束速率。结果，束流速率被控制在10^3 e-/sec到10^7 e-/sec之间。这种非常慢的引出束的应用已经开始。用于稀有衰变搜索的液体中子探测器的测试由东京大学和KEK的小组进行。RIKEN的小组还对“自约束放射性离子靶（SCRIT）”的电子探测器进行了测试。此外，还开展了一些新型探测器的研究与开发项目，如大坂大学研究组的新型吸管室、京都大学研究组的气凝胶切伦科夫计数器和京都大学研究组的新型微通道板束流监测器。

项目成果

Ultra Slow Electron Beam Extraction at KSR

KSR 的超慢电子束提取

• 发表时间: 2004
• 期刊: Proceedings of the 1st Annual Meeting of Particle Accelerator Society of Japan
• 作者: Shirai T;Tongu H;Fujimoto S;Noda A
• 通讯作者: Noda A

R＆D Study of a Self-Confining Radioactive Ion Target (SCRIT) in the KSR

KSR自约束放射性离子靶（SCRIT）的研发研究

• 发表时间: 2005
• 期刊: Beam Science and Technology 9
• 作者: Wakasugi M;Emoto T;Koseki T;Ohnishi T;Suda T;Takeda T;Yano Y;Kurita K;Shirai T;Tongu H
• 通讯作者: Tongu H