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Study on twin input coupler for a 1.5-GHz superconducting cavity
- NUCLEAR TECHNIQUES Vol. 39, Issue 6, Article number: 060103(2016)
- 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：
- 基金信息：National Natural Science Foundation of China
DOI：10.11889/j.0253-3219.2016.hjs.39.060103
CLC： TL503.2Received：10 March 2016，
Revised：06 April 2016，
Published：10 June 2016
- 稿件说明：
移动端阅览
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
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
2
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
2
Considering the accelerating gradient 15-20 MV·m
-1
it is necessary to use twin input coupler.
Methods
2
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
2
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
2
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
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