Design Study and R&D of Tau/Charm Factory

设计研究与研究

• 批准号: 08044099
• 负责人: KUROKAWA Shin-ichi
• 金额: $ 9.28万
• 依托单位: KEK,High Energy Accelerator Research Organization
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08044099/
• 关键词: TauCharm Factry; electron-positorn colliders; photo-electron instaability; single-cell, single-mode; superconducting cavity; superconducting final-focus quads; superconducting technology; ビーム不安定性; 超伝導電磁石; 加速器; 衝突型加速器; タウ・チャーム・ファクトリー; Bファクトリー

1. The design of BTCF, Beijing TauCharm Factory, proceeded smoothly, and the results was summarized as "Feasibility Study Report on Beijing TauCharm Factry", IHEP BTCF ReportO3, October 1996. Head investigator of this project, Shin-ichi Kurokawa, attended the International Review Committee of BTCF held at IHEP in November 1996. The committee appreciated the result of the design work and recommended early start of the construction.2. A series of experiments on photo-electron instability (PEI) was performed at BEPC of IHEP.The results of the experiments are summarized as follows : (1) The phenomena observed at PF was confirmed as PEI ; (2) The dependence of the instability on various accelerator parameters was clarified ; and (3) The spread of modes and variation of strength of each mode with respect to time were clarified. The experiments are highly appreciated internationally.3. The applicability of single-cell, single-mode, superconducting cavity to TauCharm Factory was proved by a beam test done at AR, where this type of cavity could store 570 mA, which was about the same value as that of TauCharm Factory. In order to make the construction of superconducting cavities and superconducting final-focus quads that are must for the BTCF, preparation for technology transfer of superconducting technology was done.

1. 北京 TauCharm 工厂 BTCF 设计进展顺利，成果总结为《北京 TauCharm 工厂可行性研究报告》，高能所 BTCF ReportO3，1996 年 10 月。该项目首席研究员黑川真一参加了1996年11月，BTCF国际评审委员会在高能所召开，委员会对设计工作的成果表示赞赏，建议尽早开工建设。 2．在高能物理研究所的BEPC上进行了一系列关于光电子不稳定性（PEI）的实验。实验结果总结如下：（1）证实了在PF处观察到的现象为PEI； (2) 阐明了不稳定性对各种加速器参数的依赖性； (3) 阐明了模态的传播以及每种模态的强度随时间的变化。该实验得到了国际上的高度评价。 3． AR的束流测试证明了单电池、单模、超导腔体对TauCharm工厂的适用性，该腔体可以存储570mA的电流，与TauCharm工厂的值大致相同。为完成BTCF所需的超导腔体和超导最终焦点四方阵的建设，做好了超导技术转让的准备工作。

项目成果

BTCF Design Group, Presented by Y.Z.Wu: "Beijing Tau-Charm Factory Desing Study" Proceedings of PAC97. 321-323 (1997)

BTCF设计集团，吴YZ.Wu主讲：《北京陶魅力工厂设计研究》PAC97会议论文集。

Z.Y. Guo,et.al.: "Experimental Study of the Beam-Photoelectron Instability in BEPC" Proceedings of MBI97. 150-162 (1998)

Z.Y.

E.Kikutani and M.Tobiyama: "Strategy for Developing Fast Bunch Feedback Systems for KEKB" Proceedings of PAC97. 2332-2334 (1999)

E.Kikutani 和 M.Tobiyama：“为 KEKB 开发快速群反馈系统的策略”PAC97 论文集。

Z.Y. Guo,et al.: "Study of the Beam-Photoelectron Instability in BEPC" Proceedings of PAC98. (1999)

Z.Y.

Y.Minagawa,et.al.: "A Systematic Study of a Transverse Feedback System with a Two-Tap Fir Filter" Proceedings of PAC96. 1896-1898 (1997)

Y.Minakawa 等人：“带有两抽头 Fir 滤波器的横向反馈系统的系统研究”PAC96 论文集。