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| THPPP047 |
NEG Film Development and Massive Coating production for HEPS |
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- 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
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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.
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-MEDSI2023-THPPP047
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| About • |
Received ※ 02 November 2023 — Revised ※ 09 November 2023 — Accepted ※ 22 November 2023 — Issued ※ 18 July 2024 |
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