Frequency sensitivity of the passive third harmonic superconducting cavity for SSRF

Xiao-Yun Pu; Hong-Tao Hou; Yan Wang; Zheng Li; Jing Shi; Yu-Bin Zhao; Jian-Fei Liu

doi:10.1007/s41365-020-0732-x

Your Location：

Home >

Browse articles >

Frequency sensitivity of the passive third harmonic superconducting cavity for SSRF

SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS | Updated：2021-01-26

- Frequency sensitivity of the passive third harmonic superconducting cavity for SSRF
- Nuclear Science and Techniques Vol. 31, Issue 3, Article number: 31(2020)
- Affiliations：
  
  1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  2.University of Chinese Academy of Sciences, Beijing 100049, China
  3.Shanghai Key Laboratory of Cryogenics & Superconducting RF Technology, Shanghai 201800, China
  4.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
- Author bio：
  
  puxiaoyun@sinap.ac.cn
  Corresponding author, liujianfei@sinap.ac.cn
- Funds：
- DOI：10.1007/s41365-020-0732-x
  CLC：
Scan for full text
Xiao-Yun Pu, Hong-Tao Hou, Yan Wang, et al. Frequency sensitivity of the passive third harmonic superconducting cavity for SSRF. [J]. Nuclear Science and Techniques 31(3):31(2020)
DOI：

Xiao-Yun Pu, Hong-Tao Hou, Yan Wang, et al. Frequency sensitivity of the passive third harmonic superconducting cavity for SSRF. [J]. Nuclear Science and Techniques 31(3):31(2020) DOI： 10.1007/s41365-020-0732-x.

摘要

Abstract

A 1.5 GHz passive third harmonic superconducting cavity was proposed to improve the beam quality and lifetime in the Shanghai Synchrotron Radiation Facility Phase-II beamline project. Lifetime improvement highly depends on the resonant frequency of the passive third harmonic superconducting cavity. It is important that the operating frequency of the cavity is within the design range and the cavity has reasonable mechanical stability. A simulation method for the multiphysics coupled analysis has been developed based on the ANSYS code. Multiphysics coupled simulations have been performed under different conditions, such as etching, evacuation, cooling, and pre-loading. Analyses of mechanical modes and structural stress have been executed. A possible stiffening ring method for the two-cell superconducting niobium cavity has been investigated. In this paper, we present a multiphysics coupled analysis of the third harmonic cavity using a finite element analysis code. The results of the analysis show that a reliable frequency for the cavity after electron beam welding is 1498.033 MHz, and the corresponding frequency of the pre-tuning goal is 1496.163 MHz. A naked cavity is a reasonable option based on structural stress and mechanical modal analyses. A frequency range of ±500 kHz and limiting tolerable displacement of ±0.35 mm are proposed for the design of the frequency tuner.

关键词

Keywords

Superconducting cavityPassive harmonic cavityFrequency detuningFrequency tunerMultiphysics analysis

references

B.C. Jiang, Z.T. Zhao, G.M. Liu, Study of Touschek Lifetime in SSRF Storage Ring, Chin. Phys. C 30, 693-698 (2006).

J.F. Liu, H.T. Hou, D.Q. Mao et al., Great progress in developing 500-MHz single cell superconducting cavity in China, Sci. China-Phys. Mech. Astron 54, 169-173 (2011). https://doi.org/10.1007/s11433-011-4591-7https://doi.org/10.1007/s11433-011-4591-7

J.M. Byrd, M. Georgsson, Lifetime increase using passive harmonic cavities in synchrotron light sources, Phys. Rev. Accel. Beams 4, 030701 (2001). https://doi.org/10.1103/PhysRevSTAB.4.030701https://doi.org/10.1103/PhysRevSTAB.4.030701

G. Penco, M. Svandrlik, Experimental studies on transient beam loading effects in the presence of a superconducting third harmonic cavity, Phys. Rev. Accel. Beams 9, 044401 (2006). https://doi.org/10.1103/PhysRevSTAB.9.044401https://doi.org/10.1103/PhysRevSTAB.9.044401

H.T. Hou, S.J. Zhao, C. Luo et al., Beam trip diagnostic system at SSRF, Nucl. Sci. Tech 20, 261-264 (2009). https://doi.org/10.13538/j.1001-8042/nst.20.261-264https://doi.org/10.13538/j.1001-8042/nst.20.261-264

T. Phimsen, B.C. Jiang, H.T. Hou et al., Improving Touschek lifetime and synchrotron frequency spread by passive harmonic cavity in the storage ring of SSRF, Nucl. Sci. Tech 28, 108 (2017). https://doi.org/10.1007/s41365-017-0259-yhttps://doi.org/10.1007/s41365-017-0259-y

Z.T. Zhao, B.C. Jiang, Y.B. Leng et al., Performance Optimization and Upgrade of the SSRF Storage Ring, presented at the the 4th International Particle Accelerator Conference, China, (2013).

G.M. Ma, Z.T. Zhao, J.F. Liu, Design of a higher harmonic cavity for the SSRF storage ring, Chin. Phys. C 32, 275-279 (2008). https://doi.org/10.1088/1674-1137/32/4/007https://doi.org/10.1088/1674-1137/32/4/007

T. Phimsen, B. Jiang, H. Hou et al., Tracking code simulation for passive harmonic cavity in the SSRF storage ring, Radiat. Detect. Technol. Method 2, 8 (2018). https://doi.org/10.1007/s41605-018-0035-5https://doi.org/10.1007/s41605-018-0035-5

B. Aune, R. Bandelmann, D. Bloess et al., Superconducting TESLA cavities, Phys. Rev. Accel. Beams 3, 092001 (2000). https://doi.org/10.1103/PhysRevSTAB.3.092001https://doi.org/10.1103/PhysRevSTAB.3.092001

P.P. Gong, Y.B. Zhao, H.T. Hou et al., Tuning control system of a third harmonic superconducting cavity in the Shanghai Synchrotron Radiation Facility, Nucl. Sci. Tech 30, 157 (2019). https://doi.org/10.1007/s41365-019-0669-0https://doi.org/10.1007/s41365-019-0669-0

P.P. Gong, Y.B. Zhao, H.T. Hou, Front-end frequency conversion module design for harmonic RF system in SSRF, Nucl. Tech. 42, 010101 (2019). https://doi.org/10.11889/j.0253-3219.2019.hjs.42.010101https://doi.org/10.11889/j.0253-3219.2019.hjs.42.010101. (in Chinese)

H. Padamsee, J. Knobloch, T. Hays, RF superconductivity for aceelerators. (Wiley, New York, 2008).

C. Zhang, S.B. He, R.X. Wang et al., Structural analysis of quarter-wave resonators in IMP, Chin. Phys. C 37 (10), 107002 (2013). https://doi.org/10.1088/1674-1137/37/10/107002https://doi.org/10.1088/1674-1137/37/10/107002

S.B. He, Y. He, W.M. Yue et al., Study on the frequency tuning of the half-wave resonator at IMP, Chin. Phys. C 38, 067007 (2014). https://doi.org/10.1088/1674-1137/38/6/067007https://doi.org/10.1088/1674-1137/38/6/067007

S. Posen, M. Liepe, Mechanical optimization of superconducting cavities in continuous wave operation, Phys. Rev. Accel. Beams 15, 022002 (2012). https://doi.org/10.1103/PhysRevSTAB.15.022002https://doi.org/10.1103/PhysRevSTAB.15.022002

M. Pedrozzi, J.Y. Raguin, W. Gloor et al., SLS operational performance with third harmonic superconducting system, presented at the 11th Workshop on RF Superconductivity, Germany, (2003).

Z. Li, C. Adolphsen, O. Kononenko et al., Multi-Physics Analysis of CW Superconducting Cavity for the LCLS-II using ACE3P, presented at the the 5th International Particle Accelerator Conference, Germany, (2014). https://doi.org/10.18429/JACoW-IPAC2014-WEPRI067https://doi.org/10.18429/JACoW-IPAC2014-WEPRI067

E. Zaplatin, A. Kanareykin, V. Yakovlev, Microphonics Passive Damping, presented at the the 18th International Conference on RF Superconductivity, China, (2018). https://doi.org/10.18429/JACoW-SRF2017-TUPB020https://doi.org/10.18429/JACoW-SRF2017-TUPB020

Views

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

Measurement of the cavity-loaded quality factor in superconducting radio-frequency systems with mismatched source impedance

A phenomenological model of the fundamental power coupler for a superconducting resonator

Development of a low-loss magnetic-coupling pickup for 166.6-MHz quarter-wave beta=1 superconducting cavities

RF design optimization for the SHINE 3.9 GHz cavity

Tuning control system of a third harmonic superconducting cavity in the Shanghai Synchrotron Radiation Facility

Related Author

No data

Related Institution

Institute of Modern Physics, Chinese Academy of Sciences

School of Nuclear Science and Technology, University of Chinese Academy of Sciences

Institute of High Energy physics, Chinese Academy of Sciences

Key Laboratory of Particle Acceleration Physics and Technology, IHEP, CAS

School of Nuclear Sciences and Technology, University of Chinese Academy of Sciences

Address：Editorial Office of NST, 2019 Jialuo Road, Jiading, Shanghai 201800, China Postal code：201800
Email：nst@sinap.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 沪ICP备05005479号-1 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰