应用于光源的射频超导加速技术

刘克新; 郝建奎; 全胜文; 黄森林

doi:10.11884/HPLPB202234.220075

应用于光源的射频超导加速技术

doi: 10.11884/HPLPB202234.220075

北京大学物理学院重离子物理研究所，北京 100871

基金项目: 国家重点研发计划项目（2016YFA0401904）

详细信息

作者简介:
刘克新，kxliu@pku.edu.cn

中图分类号: TL503
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- 被引次数: 0
出版历程
- 收稿日期: 2022-03-19
- 修回日期: 2022-06-21
- 网络出版日期: 2022-06-27
- 刊出日期: 2022-08-22

SRF accelerating technology applied in light sources

Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China

摘要

摘要: 射频超导加速器采用在液氦温度下工作的超导加速腔，可运行在长宏脉冲或连续波模式，同时具有较大的束流孔径，可有效减小束腔相互作用。经过半个多世纪的发展，射频超导技术已经日趋成熟，广泛应用于各种光源，并将发挥越来越重要的作用。简要介绍射频超导基本原理、应用于光源的椭球型电子超导加速腔的研制工艺、超导加速模组构成和应用于不同类型光源的超导加速腔的主要特点。
- 椭球超导腔 /
- 加速梯度 /
- 品质因数 /
- 表面处理 /
- 超导加速模组
Abstract: Superconducting accelerator, which uses SRF cavity working at cryogenic environment, can operate in macro-pulse or CW modes. Due to its large beam aperture, the interaction between beam and cavity can be reduced remarkably. After the development of more than a half century, SRF technology is quite advanced and has been applied in different kinds of light sources. In this paper, basic principle of SRF, fabrication of elliptical SRF cavity and structure of typical cryomodule of SRF accelerator are introduced.
- elliptical SRF cavity /
- accelerating gradient /
- quality factor /
- surface treatment /
- cryomodule

HTML全文

图 1 TESLA型9-cell超导腔腔型设计和实物(单位：mm)

Figure 1. Design and photo of TESLA 9-cell superconducting cavity (Unit: mm)

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图 2 宁夏东方钽业公司生产的大晶粒铌材

Figure 2. Large grain niobium material produced by Ningxia OTIC

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图 3 经氮掺杂处理后超导腔出现“anti-Q-slope”现象^[31]

Figure 3. Anti-Q-slope of superconducting cavities after N-doping^[31]

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图 4 北京大学单-cell超导腔氮掺杂处理测试结果

Figure 4. Vertical test results of single cell cavities after N-doping at Peking University

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图 5 中科院高能物理研究所超导腔中温处理测试结果

Figure 5. Vertical test result of superconducting cavities after mid-T treatment at IHEP

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图 6 北京大学垂测装置

Figure 6. Vertical test system of Peking University

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图 7 包含两只9-cell超导腔的加速模组示意图

Figure 7. Layout of an accelerating cryomodule including two 9-cell superconducting cavities

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参考文献(33)

[1]	Schwettman H A. Proceedings of 5th International Conference of High Energy Accelerators (Frascati, 1965) [C].
[2]	Turneaure J P, Viet N T. Superconducting Nb TM₀₁₀ mode electron-beam welded cavities[J]. Applied Physics Letters, 1970, 16(9): 333-335. doi: 10.1063/1.1653215
[3]	Klein U, Proch D. Proceedings of the Conference of Future Possibilities for Electron Accelerators [C]. Charlottesville, 1979: N1-17.
[4]	Shemelin V D. Low loss and high gradient SC cavities with different wall slope angles[C]//2007 IEEE Particle Accelerator Conference. 2007: 2352-2354.
[5]	Reschke D, Aderhold S, Möller A, et al. Results on large grain nine-cell cavities at DESY: Gradients up to 45 MV/m after electropolishing[C]//Proceedings of SRF2011. 2011: 490-494.
[6]	Geng R L. Overview of high gradient SRF R&D for ILC cavities at Jefferson Lab[C]//Proceedings of SRF2009. 2009: 213-217.
[7]	郝建奎, 全胜文, 林林, 等. 国际直线对撞机(ILC)高梯度射频超导加速腔研制[J]. 中国科学:物理学力学天文学, 2013, 43(10):1321-1326 Hao Jiankui, Quan Shengwen, Lin Lin, et al. The first high gradient 9-cell superconducting cavity reached ILC requirements in China[J]. Scientia Sinica Physica, Mechanica & Astronomica, 2013, 43(10): 1321-1326
[8]	Kostin D, Gössel A, Lange R, et al. Testing the FLASH superconducting accelerating modules[C]//Proceedings of the 13th International Workshop on RF Superconductivity SRF2007. 2007: 442-445.
[9]	Reschke D, Decking W, Walker N J, et al. The commissioning of the European-XFEL linac and its performance[C]//Proceedings of the 18th International Conference on RF Superconductivity SRF2017. 2017: 1-5.
[10]	Hao Jiankui, Quan Shengwen, Lin Lin, et al. Fabrication, treatment and test of large grain cavities[C]//Proceedings of the 18th International Conference on RF Superconductivity SRF2007. 2017: 700-702.
[11]	Singer W. Development of large grain cavities at DESY[C]//TTC2011, Beijing, 2011.
[12]	Grassellino A, Romanenko A, Sergatskov D, et al. Nitrogen and argon doping of niobium for superconducting radio frequency cavities: a pathway to highly efficient accelerating structures[J]. Superconductor Science and Technology, 2013, 26: 102001. doi: 10.1088/0953-2048/26/10/102001
[13]	Grassellino A, Romanenko A, Trenikhina Y, et al. Unprecedented quality factors at accelerating gradients up to 45 MVm⁻¹ in niobium superconducting resonators via low temperature nitrogen infusion[J]. Superconductor Science and Technology, 2017, 30: 094004. doi: 10.1088/1361-6668/aa7afe
[14]	Posen S. Update on insitu mid-T bake[R]. TTC2020, CERN, 2020.
[15]	Chen Shu, Hao Jiankui, Lin Lin, et al. Successful nitrogen doping of 1.3GHz single cell superconducting radio-frequency cavities[J]. Chinese Physics Letters, 2018, 35: 037401. doi: 10.1088/0256-307X/35/3/037401
[16]	Zhou Quan, He Feisi, Pan Weimin, et al. Medium-temperature baking of 1.3 GHz superconducting radio frequency single-cell cavity[J]. Radiation Detection Technology and Methods, 2020, 4(4): 507-512. doi: 10.1007/s41605-020-00208-7
[17]	Chen J F, Hou H T, Liu Y F, et al. N-doping studies with single-cell cavities for the SHINE project[C]//Proceedings of the 19th International Conference on RF Superconductivity SRF2019. 2019: 102-105.
[18]	Galayda J N. LCLS-II final design report[R]. LCLSII-1.1-DR-0251-R0, 2015.
[19]	Zhu Z Y, Zhao Z T, Wang D, et al. SCLF: an 8-GeV CW SCRF linac-based X-ray FEL facility in Shanghai[C]//Proceedings of the 38th International Free Electron Laser Conference(FEL2017). 2017: 182-184.
[20]	Cavallari G, Chiaveri E, Tückmantel J, et al. Acceptance tests of superconducting cavities and modules for LEP from industry[C]//Proceedings of the 4th European Particle Accelerator Conference EPAC94. 1994: 2042-2044.
[21]	Saito K, Kojima Y, Furuya T, et al. R&D of superconducting cavities at KEK[C]//Proceedings of the 4th Workshop on RF Superconductivity. 1989: 635-694.
[22]	Belomestnykh S, Barnes P, Chojnacki E, et al. Running CESR at high luminosity and beam current with superconducting RF system[C]//Proceedings of EPAC 2000. 2000: 2025-2027.
[23]	Furuya T, Mitsunobu S, Tajima T, et al. Thermal cycle tests of KEK 500MHz cavities[C]//Proceedings of the 5th Workshop on RF Superconductivity. 1991: 684-693.
[24]	Wang Guangwei, Dai J P, Dai X W, et al. Fabrication and test of 500MHz Nb cavity for BEPCII[C]//Proceedings of the 15th International Conference on RF Superconductivity. 2011: 512-514.
[25]	Liu J F, Hou H T, Mao D Q, et al. Development of superconducting radio frequency cavities at SINAP[C]//Proceedings of IPAC2012. 2012: 2248-2250.
[26]	Zhang Pei, Zhang Xinying, Li Zhongquan, et al. Development and vertical tests of a 166.6 MHz proof-of-principle superconducting quarter-wave beta=1 cavity[J]. Review of Scientific Instruments, 2019, 90: 084705. doi: 10.1063/1.5119093
[27]	Gruner S M, Bilderback D, Bazarov I, et al. Energy recovery linacs as synchrotron radiation sources (invited)[J]. Review of Scientific Instruments, 2002, 73(3): 1402-1406. doi: 10.1063/1.1420754
[28]	Poole M W, Clarke J A, Seddon E A. 4GLS: an advanced multi-source low energy photon facility for the UK[C]//Proceedings of EPAC2002. 2002: 733-735.
[29]	Aune B, Bandelmann R, Bloess D, et al. Superconducting TESLA cavities[J]. Physical Review Accelerators and Beams, 2000, 3: 092001. doi: 10.1103/PhysRevSTAB.3.092001
[30]	Padamsee H, Knobloch J, Hays T. RF superconductivity for accelerators[M]. New York: John Wiley & Sons, 1998: 59-62.
[31]	Crawford A, Eichhorn R, Furuta F, et al. The joint high Q₀ R&D program for LCLS-II[C]//Proceedings of the 5th International Particle Accelerator Conference IPAC2014. 2014: 2627-2630.
[32]	He Feisi. Experimental study of simplified mid-T furnace baking at IHEP (15+5)[C/OL]//TTC 2021 Virtual Meeting. (2021-01-19). https://indico.desy.de/event/27572/contributions/94299/.
[33]	Büchner A, Gabriel F, Grosse E, et al. The ELBE-project at Dresden-Rossendorf[C]//Proceedings of EPAC2000. 2000: 732-734.