Author: Meng, F.
Paper Title Page
WEOAM04 Development of Low-Frequency Superconducting Cavities for High Energy Photon Source 129
 
  • X.Y. Zhang, J. Dai, L. Guo, Q. Ma, F. Meng, P. Zhang, H.J. Zheng
    IHEP, Beijing, People’s Republic of China
 
  Funding: This work was supported in part by High Energy Photon Source, and in part by the National Natural Science Foundation of China under Grant 12005241.
A low-fre­quency su­per­con­duct­ing cav­ity is one of the most crit­i­cal de­vices in the High En­ergy Pho­ton Source (HEPS), a 6 GeV dif­frac­tion-lim­ited syn­chro­tron light source under con­struc­tion in Bei­jing. A higher-or­der-mode (HOM) damped 166.6 MHz ß=1 quar­ter-wave su­per­con­duct­ing cav­ity, first of its kind in the world, has been de­signed by the In­sti­tute of High En­ergy Physics. Com­pact struc­ture, ex­cel­lent elec­tro­mag­netic and me­chan­i­cal prop­er­ties and man­u­fac­tura­bil­ity were re­al­ized. Mounted with a for­ward power cou­pler, a tuner, two ther­mal break beam tubes, a col­li­mat­ing taper tran­si­tion, two gate valves and some shielded bel­lows, the dressed cav­ity was then as­sem­bled into a cry­omod­ule. Two cry­omod­ules were later re­quired to fit into HEPS straight sec­tions with a length lim­i­ta­tion of 6 me­ters, which posed a sig­nif­i­cant chal­lenge for the de­sign of the cav­ity string. The suc­cess of the hor­i­zon­tal test also ver­i­fies the de­sign of the cav­ity string. This ar­ti­cle pre­sents the de­sign, fab­ri­ca­tion, post-pro­cess­ing, sys­tem in­te­gra­tion, and cryo­genic tests of the first HOM-damped com­pact 166.6 MHz su­per­con­duct­ing cav­ity mod­ule.
 
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DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOAM04  
About • Received ※ 25 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 December 2023
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