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Observations at Fermilab

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  1. Observations at Fermilab Genfa Wu for Fermilab team Fermilab/ANL facility and diagnostic capability Cavity processing/testing summary Cavity performance and material observation Summary and work in progress

  2. Fermilab/ANL facility and diagnostic capability Cavity sequence Camera inspection Ultrasonic degrease with soap EP Ultrasonic degrease with soap HPR Baking 120 C RF cold test Follow up Camera inspection Camera inspection system by Kyoto University

  3. Fermilab/ANL facility and diagnostic capability Cavity sequence Camera inspection Ultrasonic degrease with soap EP Ultrasonic degrease with soap HPR Baking 120 C RF cold test Follow up Camera inspection Fermilab Argonne joint facility

  4. Fermilab/ANL facility and diagnostic capability A typical EP process with constant average current Fermilab Argonne joint facility

  5. Fermilab/ANL facility and diagnostic capability Cavity sequence Camera inspection Ultrasonic degrease with soap EP Ultrasonic degrease with soap HPR Baking 120 C RF cold test Fermilab Argonne joint facility

  6. Fermilab/ANL facility and diagnostic capability Cavity sequence Camera inspection Ultrasonic degrease EP Ultrasonic degrease with soap HPR Baking 120 C RF cold test Fermilab A0 baking stand

  7. Fermilab/ANL facility and diagnostic capability Cavity sequence Camera inspection Ultrasonic degrease EP Ultrasonic degrease with soap HPR Baking 120 C RF cold test Fermilab IB1 Vertical Test System

  8. Cavity inside inspection Brand new TB9ACC010 iris between cell 8 and 9, by D. Sergatskov

  9. Cavity inside inspection ~ 5 mm TE1ACC001 Equator 0 before and after EP 100 µm, by M. Ge

  10. Cavity inside inspection http://tdserver1.fnal.gov/project/TD_SCRF/CavityImaging/ All the single cell images (equator and iris) are public

  11. Stop to show two TE1AES004 features

  12. T-map Fast thermometry system adapted By D. Sergatskov, FNAL

  13. T-map By A. Mukherjee, FNAL By G. Ciovati, JLAB Pioneered at Cornell Dramatically reduced cable form factor and 30 min installation time

  14. T-map preliminary result on TE1AES004, Cavity history: BCP 107 µm, EP 65 µm, In-situ baking 120C By A. Mukherjee

  15. T-map preliminary result on TE1AES004, Cavity history: BCP 107 µm, EP 65 µm, In-situ baking 120C By A. Mukherjee

  16. T-map preliminary result on TE1AES004, Cavity history: BCP 107 µm, EP 65 µm, In-situ baking 120C By A. Mukherjee

  17. All show no x-ray, except NR-1 NR-1, Slight FE, Quench TE1AES004 quench TE1AES005 NR-4 is BCP only, listed for reference NR-4 TE1ACC002 By J. Ozelis EP single cell at Fermi Argonne facility EP completed EP completed EP in progress

  18. Cavity performance and material Work in progress !

  19. NR-1 Cavity history: BCP 150 µm, EP 100 µm, No In-situ baking After EP, Photo By M. Ge By M. Ge Equator weld rugged, despite of 100 µm EP By J. Ozelis Currently at Cornell for quench identification and cavity inspection By Z. Conway 26 MV/m, quench, slight FE

  20. TE1AES004, Final test By M. Ge By J. Ozelis TE1AES004 equator other side 540 position Cavity history: BCP 107 µm, EP 65 µm, In-situ baking 120C 39.2 MV/m, No X-ray, limited by quench Pit 0.9 mm diameter, depth still being investigated

  21. H field enhancement of Pit H. Padamsee, summary talk, LCWS08 These two edges with higher H-field Replica will help resolve the geometry - Berry, Antoine, Desmons, EPAC2004

  22. TE1AES005, By A. Crawford By J. Ozelis TE1AES005 equator before EP Cavity history: BCP 104 µm at Cornell, EP 100 µm at ANL 31.5 MV/m, No X-ray, limited by Q-slope

  23. TE1ACC002, By M. Ge By J. Ozelis TE1ACC002 equator 24 pos. before bulk EP Cavity history: EP 112 µm at ANL 33 MV/m, limited by Q-slope

  24. NR-4, to be EP at ABLE By M. Ge NR-4 equator other side 1072 position By Z. Conway and J. Ozelis Cavity history: BCP 254 µm 28.7 MV/m, No X-ray, limited by Q-slope

  25. Cavities for Eddy Current Scanning Side 2 RF side Using thermometry to track evolution of defects Studies for Eddy Current Scanning

  26. Next RF tests • Two RF tests for post-baking EP cavities • 9-cell RF test (JLAB result verification) • 9-cell HPR/RF test (A6) • Two more newly EP cavities • ABLE EP cavity • Laser treated cavity

  27. Fermi Argonne cavity experience 3 Recent consecutive RF tests show No x-ray and 4/5 cavity cycles show no-xray at Fermi/Argonne joint facility 9-cell processing will start on 3/13/2009

  28. Public access of cavity data All single cells inner surface (iris and equator ) are inspected http://tdserver1.fnal.gov/project/TD_SCRF/CavityImaging http://tdserver1.fnal.gov/genfa/single/Single%20cell%20summary.htm Fermi Argonne Cavity Activity is real time scheduled http://tdserver1.fnal.gov/genfa/single/calendar.htm

  29. Summary (work in progress) • Features don’t cause quench up to ~29 MV/m in BCP cavities • One EP cavity with equator pit quenches above 39 MV/m, which suggests right EP condition may still reduce the Pit magnetic field enhancement. • BCP + EP may have more potential than we thought.

  30. Team effort • EP/Processing team: M. Kelly, S. Gerbick, M. Ketzy, D Bice, D. Olis, G. Wu, A. Rowe, B. Smith, T. Arkan, … • RF/cryo team: J. Ozelis, G. Wu, M. Carter, D. Massengil, … • A0 Vacuum team: A. Rowe, W. Murayi, B. Tennis, R. Montiel, M. Rauchmiller, … • Hardware: C. Ginsburg, P. Pfund, N. Dhanaraj, M. Steinke, B. Smith, … • Inspection: M. Ge, D. Sergatskov, G. Wu, R. Schuessler • Cornell: Z. Conway, H. Padamsee Let me know if I missed anyone.