Author: Guo, D.Z.
Paper Title Page
THPPP047 NEG Film Development and Massive Coating production for HEPS 343
 
  • Y.S. Ma, H. Dong, D.Z. Guo, P. He, F. Sun, Y.C. Yang
    IHEP, People’s Republic of China
  • T. Huang
    IHEP CSNS, Guangdong Province, People’s Republic of China
 
  Massive production facilities of NEG coated vacuum chambers have been developed for HEPS in Huairou, Beijing, which based on the NEG coating prototypes of HEPS-TF. The facilities can achieve simultaneous coating of 16~20 vacuum chambers of HEPS including irregular shaped vacuum chambers. The pumping per-formance of the NEG coated vacuum chambers has been measured by test facilities. After heating at 200°C for 24 hours, the highest pumping speed of H₂ is about 0.65 l/scm2, and the highest capacity of CO is about 1.89×10-5 mbar·L/cm2. The lifetime is more than 20 cycles of air exposure and re-activation. The pumping performance meets the design requirements of HEPS. Currently the NEG coated vacuum chambers are applied to the storage ring of HEPS.  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP047  
About • Received ※ 02 November 2023 — Revised ※ 09 November 2023 — Accepted ※ 22 November 2023 — Issued ※ 18 July 2024
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