强激光与粒子束, 2005, 17 (12): 1901, 网络出版: 2006-04-28   

倍频腔法测BEPCⅡ直线加速器的束团长度

Bunch length measurement in BEPCⅡ linac by harmonic method
作者单位
1 中国科学院高能物理研究所,北京,100049
2 中国科学院研究生院,北京,100049
摘要
阐述了利用倍频腔束团长度监测器测量北京正负电子对撞机二期工程电子直线加速器束团长度的原理,通过两个月的测试和数据采集,测得的束团长度集中在1.4~2.0mm之间,与理论值1.5mm基本相符.根据不同时刻的记录,基频腔峰值电压与束流流强探测器BCT3所测流强值近似成正比关系;当大幅改变预聚束器和聚束器参数而束流流强不变时,反映聚束质量的五倍频腔信号也随之大幅改变,而反映流强信号的基频腔信号则变化不大,这些试验结果与理论分析完全一致.
Abstract
The principle of measuring the bunch length of the Beijing electron positron collider upgrade(BEPCⅡ) linac by harmonic bunch length monitor is presented.The measured bunch length ranging between 1.4 mm and 2.0 mm agrees well with the theoretic calculation of 1.5 mm.The electron beam current measured by the beam current monitor(BCT3) is almost in direct proportion to the induced voltage of the fundamental harmonic.When the parameters of the pre-buncher and buncher are adjusted greatly while the beam current being unchanged,the fifth harmonic signal has a great change,but the fundamental signal changes gently.The test results are all in good agreement with the theoretic analysis.
参考文献

[1] 北京正负电子对撞机重大改造工程(BEPCⅡ)初步设计-直线加速器部分[R].北京:中国科学院高能物理研究所,2003.
The Beijing electron positron collider upgrade project (BEPCⅡ) first design-linac part.Beijing:Institute of High Energy Physics,Chinese Academy of Sciences,2003

[2] Babenko E,Jobe R K,McCormick D,et al.Length Monitor for 1 mm SLC Bunches[A].Particle Accelerator Conference[C].1993.17-20.

[3] Martinez C.Determination of Longitudinal Electron Bunch Lengths on Picosecond Time Scales[D].CERN.1999.

[4] Nassiri A,Grelick.A.A fifth Harmonic RF Bunch monitor for the ANL-APS Electron Linac[A].particle Acceberator Conference[C].1993.2412-2414.

[5] 裴士伦,王书鸿,顾鹏达,等.142.8 MHz次谐波聚束腔的结构优化设计[J].强激光与粒子束,2004,16(6):795-799.
Pei S L,Wang S H,Gu P D,et al.Structure optimization of 142.8 MHz sub-harmonic buncher.High Power Laser and Particle Beams,2004,16(6):795-799

[6] 王劲,《倍频腔束团相宽监测方法研究》[D].硕士论文,1988.
Wang J.Study of the harmonic bunch length monitor.Beijing:Institute of High Energy Physics.Chinese Academy of Sciences,1988

[7] 张肃文.高频电子线路[M].北京:高等教育出版社,1984.
Zhang X W.High frequency electronic circuitry.Beijing:Higher Education press,1984

[8] 姚充国.电子直线加速器[M].北京:科学出版社,1986.
Yao C G.Electron Linac.Beijing:Science Press,1986

[9] 闫润卿,李英惠.微波技术基础[M].北京:北京理工大学出版社,1997.
Yan R Q,Li Y H.Basic theory of microwave technology.BeiJing:Beijing Institute of Technology Press,1997

崔艳艳, 赵风利, 耿哲峤, 侯汨, 裴国玺. 倍频腔法测BEPCⅡ直线加速器的束团长度[J]. 强激光与粒子束, 2005, 17(12): 1901. CUI Yan-yan, ZHAO Feng-li, GENG Zhe-qiao, HOU Mi, PEI Guo-xi. Bunch length measurement in BEPCⅡ linac by harmonic method[J]. High Power Laser and Particle Beams, 2005, 17(12): 1901.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!