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Progress and Plan for Superconducting RF Cavity

Progress and Plan for Superconducting RF Cavity. RF Group. Progress in Last Year. Transport two SC cavity modules and couplers from harbor to IHEP by air-suspended truck Leak check after transportation (instructed by Prof. Mitsunobu, MELCO send a Supervisor to check all of things)

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Progress and Plan for Superconducting RF Cavity

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  1. Progress and Plan for Superconducting RF Cavity RF Group

  2. Progress in Last Year • Transport two SC cavity modules and couplers from harbor to IHEP by air-suspended truck • Leak check after transportation (instructed by Prof. Mitsunobu, MELCO send a Supervisor to check all of things) • Evacuate niobium cavity cell and insulation vacuum vessel, high pressure rising up of helium vessel and nitrogen cooling channel. • Do leak test for niobium cavity cell and insulation vacuum vessel. • Prepare clean work environment • Design and construct clean room of class 10’000 for cavity assembly in RF hall of building six. • Design and construct clean booth of class 100 for HOM damper assembly. • Design and construct clean cap of class 100 for coupler assembly.

  3. Progress … con’t (1) • Assembly of beam taper, RF bellow, gate valve and ion pump, as well as vacuum gauge and mass analyzer together. It include two SBP and two LBP module • Ultrasonic washing, ultrapure water rinsing for each beam taper. • Connected all components on to the beam taper. • Leak test and high temperature baking. • HOM damper baking (Prof. Furuya, a S.V from MELCO) • Ferrite surface check. (There exist a remarkable cracking on the ferrite of the SBP2 HOM damper, KEK borrowed their spare one to us via Melco) • Connect HOM damper on the beam taper. • Baked four HOM damper by heated cycle water around 45 Celsius degree for two months.

  4. Progress … con’t (2) • Assembly of the No.2 SCC module (Prof. Mitsunobu and Furuya, a S.V from MELCO) • Slow leak cavity, coupler and HOM damper in sequence. • Mount coupler on the cavity module. • Connect SBP and LBP HOM damper on to the both side of cavity module separately. • Evacuate whole module and do leak test. • Ion pump baking. • Move the No.2 SCC module to the horizontal test room • Preparation for final performance test (Furuya, a S.V from MELCO) • Locate and adjust module to the right site in test room. • High power waveguide connection. • Connect cryogenic transfer line and safety valve, some modification will be done. • Test the cooling air and water for doorknob and coupler. • …

  5. Plan for next • 2006/4/26~29. Assemble the No.1 SCC module. After assembly, it will be stored in the clean room of building 6 (Prof. Mitsunobu, a S.V from MELCO) • 2006/4/30~5/2. Room temperature aging for the No.2 SCC coupler (Prof. Furuya, a S.V from MELCO) • 2006/5/8~5/31. Performance test for the No.2 SCC (Prof. Furuya, a S.V from MELCO) • Cooling down. • Coupler aging at cold stage. • Performance test (Q0~Eacc, Emax, static loss, tuning range, Qext for the coupler port and etc.) • Warm up.

  6. Plan … Con’t • 2006/6/1~8/31. Tunnel installation for the No.2 SCC (Prof. Mitsunobu a S.V from MELCO) • Move to tunnel, locate and align this module • connect both side gate valve with vacuum chamber. • Prepare and test for LLRF, Interlock, WG, Transfer line, Cooling water, Gas line for G.V, etc. • 2006/6/7. Move the No.1 SCC to the horizontal test room • 2006/6/8~7/7. Preparation for performance test for the No.1 SCC • 2006/7/8~7/31. Horizontal test for the No.1 SCC (Prof. Mitsunobu a S.V from MELCO) • 2006/8/1~8/31. Tunnel installation for the No.1 SCC • 2006/9/1~9/24. RF co-adjustment and signal check with other system • 2006/9/25~… Beam commissioning

  7. Assembly of beam taper, RF bellow, gate valve, ion pump, vacuum gauge and mass analyzer

  8. Clean room, clean booth and clean cap

  9. Check the ferrite surface of HOM damper by microscope

  10. HOM damper baking by the heated cycle water

  11. The No.2 SC cavity is ready for horizontal test

  12. Request … • Ask vacuum group to fabricate a section of substitution beam pipe for SC Cavity module. • Set a quick valve to isolate linac and storage ring in emergency to protect the SC cavity from a severe vacuum leak. • Prepare some spare key components and one whole spare cavity module. >>>>THANKS<<<<<

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