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SCRF Lab and Facilities @ IHEP

SCRF Lab and Facilities @ IHEP. Jianping Dai On behalf of the SCRF facilities team First Mini-Workshop on IHEP 1.3GHz Superconducting RF project, June 10-11, 2009, IHEP, Beijing, China. Outline. Brief introduction Upgrade of existing facilities Development of new facilities Summary.

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SCRF Lab and Facilities @ IHEP

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  1. SCRF Lab and Facilities @ IHEP Jianping Dai On behalf of the SCRF facilities team First Mini-Workshop on IHEP 1.3GHz Superconducting RF project, June 10-11, 2009, IHEP, Beijing, China

  2. Outline • Brief introduction • Upgrade of existing facilities • Development of new facilities • Summary jpdai@ihep.ac.cn

  3. Brief introduction of SCRF Lab. @IHEP • The SCRF Lab was built in 2004. • It was initially equipped with the fundamental facilities needed by the development of single cell SCRF cavities. • Since 2005, several low beta single-cell SRF cavities have been treated and tested in this lab. jpdai@ihep.ac.cn

  4. 1st: CP(100m)+HPR(2hr.)+Baking(120℃ 48hr.) @IHEP 2nd: CP(50m)+HPR(2hr.)+Baking(120℃ 48hr.) @IHEP 3rd: CP(20m)+HPR(3hr.)+Baking(120℃ 48hr.) @IHEP 4th: HPR @KEK 5th: warm up and fast cooling down @KEK Low beta SC-02 jpdai@ihep.ac.cn

  5. Low beta SC-03 1st: BP(20m)+CP(80m)+Anealing+CP(80m)+HPR(1.5hr.)+Baking(120℃,48hr.) @IHEP 2nd: CP(100m)+HPR(2hr.)+Baking(120℃ 48hr.) @IHEP 3rd: Only evacuation after transfered from IHEP to KEK @KEK 4th: EP(80m+3m)+HF+HPR+Baking(120℃ 48hrs.) @KEK jpdai@ihep.ac.cn

  6. Large grain Nb LL single cell cavity jpdai@ihep.ac.cn

  7. To meet the 9-cell cavity requirement for surface preparation and vertical tests, the 1.3 GHz SCRF program will significantly improve the facilities. • Besides the upgrade of the clean room and the ultra-pure water system, several new facilities will be developed. • CBP (tumbling) machine for 9-cell cavities (ZHAI Jiyuan) • HPR facility for 9-cell cavities (LI Zhongquan) • BCP facility for 9-cell cavities (DAI Jianping) • Pretuning machine for 9-cell cavities (HOU Mi) • New dewar and related devices for vertical tests • Helium recycling system for vertical tests based on the BEPCII cryogenic plant, or a brand new vertical test stand near the horizontal test stand • T-mapping and cavity inner surface inspection tools jpdai@ihep.ac.cn

  8. Upgrade of the existing facilities (I) The height of the roof was increased to 3.5m from 2.5m, to host the new HPR machine All the filters were changed.AAF filter, the efficiency ≥99.9995%@0.12um The floor was improved jpdai@ihep.ac.cn

  9. Upgrade of the existing facilities (II) • Parameters of the Ultra pure water • 180.2M-cm, • 8～20L/min, • 1200L 1200L jpdai@ihep.ac.cn

  10. Upgrade of the existing facilities (III) Cavity mount stage • 3m×4.4m×5.2m, • >4m, • Three cavities jpdai@ihep.ac.cn

  11. Development of the new facilities (I) CBP (tumbling) machine for 9-cell cavities is under fabrication. Old CBP machine for single cell cavities jpdai@ihep.ac.cn

  12. Development of the new facilities (II) The new HPR machine for 9-cell cavities is under design. Old HPR machine for single cell cavities Water Pressure :adjustable 150Kg/cm2 (Max)， Maximu Flow: 21L/min Fermilab HPR （ANL） jpdai@ihep.ac.cn

  13. Development of the new facilities (III) Old BCP by hand for single cell cavities jpdai@ihep.ac.cn

  14. New BCP for 9-cell cavities Main parameters of the machine • It takes a bout 2 hours to cool acid down to 12 OC • It takes 5-10 minutes to pump 100 liters of acid into the gravity feed bank. • It takes less than 1 minute to fill or discharge the 100 liter process tank. • The cooling system can remove up to 2KW of heat generated during the process (the expected normal power generation does not exceed 1kW) • The maximum acid flow is ~2 tons/hour Hydrofluoric (HF), Nitric(HNO3), Orthophosphoric (H3PO4) jpdai@ihep.ac.cn

  15. jpdai@ihep.ac.cn

  16. Development of the new facilities (IV) Pretuning machine for 9-cell cavities Longitudinal precision: 2um Maximum force: 10KN（1000Kgf） Maximum movement: 6mm Minimum movement: 2um jpdai@ihep.ac.cn

  17. jpdai@ihep.ac.cn

  18. About the Kyoto camera system (Mass-production model) Max wall gradient ±20 degree. Schematic drawing of the wall gradient measurement Characteristic of Kyoto camera system * The high resolution image can be taken. * The wall gradients of inner surface can be measured to use the Strip line EL illuminator. (Judgment of Pit or Bump is possible) * The heights or depths can be estimated by measured wall gradients for some well-conditioned defects. STF 17 jpdai@ihep.ac.cn

  19. Thanks ! jpdai@ihep.ac.cn

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