1.5 GHz超导加速腔双输入耦合器研究

谢新华; 王岩; 马震宇; 是晶; 罗琛; 李正; 毛冬青; 封自强; 侯洪涛; 刘建飞

doi:10.11889/j.0253-3219.2016.hjs.39.060103

您当前的位置：

首页 >

文章列表页 >

1.5 GHz超导加速腔双输入耦合器研究

同步辐射技术及应用 | 更新时间：2021-05-24

- 1.5 GHz超导加速腔双输入耦合器研究
- Study on twin input coupler for a 1.5-GHz superconducting cavity
- 核技术 2016年39卷第6期文章编号：060103
- 作者机构：
  
  1.中国科学院上海应用物理研究所嘉定园区上海 201800
  2.上海市低温超导高频腔技术重点实验室上海 201800
  3.中国科学院大学北京 100049
- 作者简介：
  
  [ "谢新华,男,1990年出生,2013年毕业于中国科学技术大学,现为硕士研究生,研究领域为核技术与应用", "XIE Xinhua, male, born in 1990, graduated from University of Science and Technology of China in 2013, master student, major in nuclear techniques and application" ]
  刘建飞,E-mail:liujianfei@sinap.ac.cn LIU Jianfei,E-mail:liujianfei@sinap.ac.cn
- 基金信息：
  
  国家自然科学基金(11335014)
- DOI：10.11889/j.0253-3219.2016.hjs.39.060103
  中图分类号： TL503.2
- 收稿日期：2016-03-10，
  
  修回日期：2016-04-06，
  
  纸质出版日期：2016-06-10
- 稿件说明：
移动端阅览
谢新华, 王岩, 马震宇, 等. 1.5 GHz超导加速腔双输入耦合器研究[J]. 核技术, 2016,39(6):060103

Xinhua XIE, Yan WANG, Zhenyu MA, et al. Study on twin input coupler for a 1.5-GHz superconducting cavity[J]. Nuclear techniques, 2016, 39(6): 060103
谢新华, 王岩, 马震宇, 等. 1.5 GHz超导加速腔双输入耦合器研究[J]. 核技术, 2016,39(6):060103 DOI： 10.11889/j.0253-3219.2016.hjs.39.060103.

Xinhua XIE, Yan WANG, Zhenyu MA, et al. Study on twin input coupler for a 1.5-GHz superconducting cavity[J]. Nuclear techniques, 2016, 39(6): 060103 DOI： 10.11889/j.0253-3219.2016.hjs.39.060103.

摘要

本实验室设计的1.5 GHz 5-cell超导腔设计工作加速梯度为15-20 MV

#183;m

-1

至少需要使用两支输入耦合器才能满足高流强运行要求。借助三维电磁仿真模拟软件CST (Computer Simulation Technology)

完成了相应的输入耦合器的电磁仿真

驻波比小于1.05的频带宽度达到18 MHz。从理论上计算加速腔双端口功率馈入

并通过铜腔双输入实验进行验证。结果表明

当两端均为欠耦合时

双输入对每个端口耦合度起到增强的作用;但当两者均为过耦合且差异较大时

耦合度小的一端则被减弱

甚至出现欠耦合的情况。对横向力场的计算显示

即使插入深度相差1 mm

使用双输入耦合器所引起的横向作用力仍比使用单耦合器情况小一个量级。

Abstract

Background

The 1.5-GHz 5-cell superconducting cavity designed by the Shanghai Key Laboratory of Cryogenics & Superconducting Radio Frequency Technology was optimized to accelerate a high current electron beam under continuous wave (CW) operation mode.

Purpose

Considering the accelerating gradient 15-20 MV·m

-1

it is necessary to use twin input coupler.

Methods

Electromagnetic simulations of the input coupler were implemented using CST (Computer Simulation Technology)

and the results showed a 18-MHz bandwidth where standing-wave ratio was better than 1.05. Power feeding by two couplers was calculated theoretically and testified on a set-up.

Results

Theoretical derivation and experimental results showed an enhancing when both couplers were under coupled but a reduction to the weaker coupled one when both couplers were over coupled. Results from simulations showed that transverse kick to beam can be diluted drastically even when difference of insert depths is 1mm.

Conclusion

Adopting twin input coupler is the only option for high average beam current CW accelerator.

关键词

Keywords

references

Hoffstaetter G H, Bazarov I V, Sagan D, et al. A lattice for a 5 GeV ERL in the CESR tunnel[C]. Proceedings of the 2003 Particle Accelerator Conference, Portland, Oregon, 2003. DOI:10.1109/PAC.2003. 1289498 10.1109/PAC.2003. 1289498

Nakamura N. Review of ERL projects at KEK and around the world[C]. Proceedings of 3rd International Conference on Particle Accelerator, New Orleans, USA, 2012

Koscielniak S, Ames F, Baartman R, et al. ARIEL and the TRIUMF e-linac initiative, a½-MW electron linac for rare isotope beam production[C]. Proceedings of the 14th Conference on Linear accelerator, Victoria, Canada, 2008

Abo-Bakr M, Anders W, Burrill A, et al. Status of the HZB ERL project bERLinpro[C]. Proceedings of the 5th International Particle Accelerator Conference, Dresden, Germany, 2014

Shemelin V, Belomestnykh S, Geng R L, et al. Dipole-mode-free and kick-free 2-cell cavity for the SC ERL injector[C] . Proceedings of the 2003 Particle Accelerator Conference, Portland, Oregon, 2008. DOI:10.1109/PAC.2003.1288777 10.1109/PAC.2003.1288777

Veshcherevich V, Belomestnykh S, Quigley P, et al. High power test of first input couplers for Cornell ERL injector cavities[C]. Proceedings of PAC 2007, Albuquerque, 2007. DOI:10.1109/PAC.2007.4441248 10.1109/PAC.2007.4441248

Knobloch J, Anders W, Martin M, et al. CW operation of the TTF-Ⅲ input coupler[C]. Proceedings of 2005 Particle Accelerator Conference, Knoxville, Tennessee, 2003. DOI:10.1109/PAC.2005.1591445 10.1109/PAC.2005.1591445

Kako E, Noguchi S, Shishido T, et al. High power tests of CW input couplers for cERL injector cryomodule[C]. Proceedings of 3rd International Conference on Particle Accelerator, New Orleans, USA, 2012

Mitra A K, Ang Z, Calic S, et al. High power coupler test for TRIUMF e-linac SC cavities[C]. Proceedings of LINAC2012, Tel-Aviv, Israel, 2012

K Watanabe , S Noguchi , E Kako , . Development of the superconducting RF 2-cell cavity for the cERL injector at KEK . Nuclear Instruments and Methods in Physics Research Section A , 2013 . 714 67 - 82 . DOI: 10.1016/j.nima.2013.02.035 http://doi.org/10.1016/j.nima.2013.02.035 .

Neumann A, Abo-Bakr M, Anders W, et al. Booster cavity and fundamental power coupler design issues for bERLinPro[C]. Proceedings of IPAC2014, Dresden, Germany, 2014

Zvyagintsev V, Beard C D, Grassellino A, et al. Nine-cell elliptical cavity development at TRIUMF[C]. Proceedings of SRF 2011, Chiacago, USA, 2011

杨峻 , 马震宇 , 王岩 , . 1500 MHz 5-cell超导腔的仿真优化 . 核技术 , 2015 . 38 ( 6 ): 060103 DOI: 10.11889/j.0253-3219.2015.hjs.38.060103 http://doi.org/10.11889/j.0253-3219.2015.hjs.38.060103 .

Jun YANG , Zhenyu MA , Yan WANG , . Simulation of a 1500 MHz 5-cell superconducting cavity . Nuclear Techniques , 2015 . 38 ( 6 ): 060103 DOI: 10.11889/j.0253-3219.2015.hjs.38.060103 http://doi.org/10.11889/j.0253-3219.2015.hjs.38.060103 .

Akemoto M, Yamazaki Y. High power input coupler for the TRISTAN APS cavity[C]. The 7th Symposium on Accelerator Science and Technology, Osaka, Japan, 1989

Riblet H J. The short-slot hybrid junction[C]. Proceedings of the Ire, 1952, 40(2):180-184. DOI:10.1109/JRPROC. 1952.274021 10.1109/JRPROC. 1952.274021

C Gulliford , I Bazarov , S Belomestnykh , . Asymmetric focusing study from twin input power couplers using realistic RF cavity field maps . Physical Review Special Topics Accelerators and Beams , 2011 . 14 032002 DOI: 10.1103/PhysRevSTAB.14.032002 http://doi.org/10.1103/PhysRevSTAB.14.032002 .

Juntong N, Beard C, Burt G, et al. RF coupler kicks and wake-fields in SC accelerating cavities[C]. Proceedings of EPAC 2008, Genoa, Italy, 2008

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

暂无数据