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WG6: Technology for Accelerators

WG6: Technology for Accelerators. Peter McIntosh (STFC Daresbury Laboratory ) Jim Clarke (STFC Daresbury Laboratory) Camille Ginsburg (FNAL) 2 nd PASI Workshop , RAL April 3 - 5, 2013. Overview. PASI #1 Review Topics Achievements During 2012 Plans for PASI #2

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WG6: Technology for Accelerators

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  1. WG6: Technology for Accelerators Peter McIntosh (STFC Daresbury Laboratory) Jim Clarke (STFC Daresbury Laboratory) Camille Ginsburg (FNAL) 2nd PASI Workshop, RAL April 3 - 5, 2013

  2. Overview • PASI #1 Review Topics • Achievements During 2012 • Plans for PASI #2 • New Technology Topic Areas • Conclusions

  3. PASI #1 Review – SRF Processing • SRF Infrastructure (VTS, HTS, processing): • UK users of FNAL facilities (Shakespeare Engineering Ltd cavity?), 1 or 2 week visits • 1 or 2 year visits • Qualification of Shakespeare by FNAL: • Test single cell cavity • Test 9 cell cavity • CBP processing & potential transfer knowledge/capability to UK.

  4. DaresburyCryomodule – CW especially interesting: Visits/commissioning. ISIS upgrade – SRF linac: Design study (if required). Microphonics & Lorentz detuning control, passive/active: (Especially CW & long pulse) Expts with Daresburycryomodule and tests at FNAL Deflecting/Crab cavity (ASTA, PX, LHC, NLS): Information exchange, identify & exploit opportunities/synergies. PASI #1 Review – SRF Linac/Cavities

  5. PASI #1 Review – ASTA Programme • ASTA experiments/instrumentation: • Information exchange, identify & exploit opportunities/synergies. • Carry out (joint) experiments & supply instrumentation/test diagnostics (?). ASTA NLS

  6. PASI #1 Review - Magnets • PAMELA magnets/integrable optics: • Explore synergies with 6D cooling magnets. • (Cross cutting opportunity with magnets & muons). • Interface between materials science & accelerator application of SC: • Examine opportunities at interfaces with other disciplines (surface science, materials science,…) • HTS testing, insulation coatings of Bi2212: • Investigate interest on interlab exchange of test samples. • Exploration of technology for ADSR.

  7. SRF Vendor Qualification • In December 2009 STFC Innovations Mini-IPS (Industry Partnership Scheme) funding secured (1-year): • Knowledge exchange of SRF cavity fabrication and qualification with Shakespeare Engineering Ltd. • Purpose of the programme to develop the capability of UK industry to produce and validate SRF cavities. • Technology would then be directly applicable to future large scale accelerator facilities. • Aim was to utilise existing SRF test facilities at Daresbury and Jlab to process and validate the fabricated cavities. • Long term plans to provide an opportunity for UK industry to bid for the construction of the SRF systems for major particle accelerators. • Competencies gained will provide an opportunity for technology and knowledge transfer and ultimately the entire process would scale to industrial production needs.

  8. Jlab Qualification 2010 • 3 x single cell 1.3GHz SRF cavities fabricated: • Spinning of beampipes demonstrated. • Verification tests performed: • SN01 was successfully tested at Jlab. • Targets exceeded 23 MV/m with a Q0 > 1010 • Accelerating gradient of 28 MV/m with a Q0 = 2.9 x 109 achieved • Improvements to baking and BCP processing facility taking place at Daresbury to facilitate testing of SN02. • SN03 currently at FNAL undergoing processing prior to test.

  9. FNAL Qualification 2012 • Cavity Preparationfor VTStest: • Bulk EP(Argonne/FNAL) • 800 C HydrogenDegas • Light EP(Argonne/FNAL) • No 120 C bake • Tests performed at 2K. • Initial Qo @ 3 MV/m = 2.2 x 1011 • Soft MP observed @ 18 MV/m. • Repetitive quench @ 25 MV/m, 1.5 x 1010 • No sign of conditioning. • No radiation observed • CBP processing currently underway. • Acknowledge support from: • C Ginsburg – FNAL Project Lead • A Rowe – Cavity Processing • Curtis Crawford – VTS testing • Alex Melnitchouk – Report summary See: Alan Wheelhouse Talk: WG6 Session 3, Thursday 4th April 11:00 – 12:30

  10. LHC-CC Cryomodule R&D • STFC, Lancaster Univ & CERN collaborating to develop Crab Cavity solution for LHC: • 4-Rod Crab Cavity (4RCC) – EUCARD • Crab Cavity Cryomodule – HL-LHC • US-LARP supporting: • Ridged-waveguide CC R&D with ODU/Jlab • Coaxial CC R&D with BNL • CM development progressing with FNAL. • CERN require LHC-CC CM to be tested on SPS prior to installation on LHC. • CM design developing to match SPS installation and qualification during 2015/16. • LHC-CC CM down-selection expected in 2016/17.

  11. LHC-CC Cryomodule R&D • SPS space constraints differ from LHC IP locations. • Common engineered CM solution being developed by UK team. • Review meeting held at FNAL in Dec12: • CM engineering issues reviewed. • Collaborative opportunities identified with FNAL across both LHC-CC and PXIE CM designs. See: Shrikant Pattalwar Talk: WG6 Session 5, Friday 5th April 09:00 – 10:30

  12. New SRF Cryomodule @ Daresbury • Collaboration formulated in early 2006 to design and fabricate new CW cryomodule and validate with beam. • Dimensioned to fit on the ALICE ERL facility at Daresbury: • Same cryomodule footprint. • Same cryo/RF interconnects. • ‘Plug Compatible’ with existing cryomodule.

  13. CM Integration on ALICE • During Mar13 CM successfully cooled to 2K and preparing for high power RF testing. • CM will probe fundamental ERL performance capabilities of SRF cavities. • >20 MV/m CW operation anticipated, strong synergy with PXIE SRF linac systems: • Thermal characterisation. • Microphonics sensitivity & suppression. • RF control & stability studies. See: Peter McIntosh Talk: WG6 Session 4, Thursday 4th April 13:30 – 15:00

  14. PASI #2 Technologies • RF Control Challenges: • PXIE, MICE, ALICE, VELA • Microphonics, feedback/feed-forward processes. • Diagnostics & Instrumentation (with WG4): • PXIE, FETS, ISIS • RF System Developments (with WG4): • SRF cavity & cryomodules, RFQ’s • CW Operation and Thermal Management. • Crab/deflecting cavity development. • Test Facilities (with WG4): • PXIE, FETS, ALICE, EMMA, VELA • Serpentine acceleration with EMMA. • Magnets and Vacuum Systems. • Industrialisation (with WG4): • IARC, FNAL, LHC. • SRF cavity fabrication/preparation with industry.  New  New  New  New

  15. Conclusions • From PASI #1, collaboration has achieved: • Successful SRF qualification of new UK vendor. • CW experiments identified for new SRF CM on ALICE. • CM development opportunities identified for both LHC and PXIE. • New technology areas identified for PASI #2: • RF Control Challenges • Diagnostics & Instrumentation • Test Facilities • Industrialisation • Anticipate strengthening UK/FNAL collaboration in these respective areas.

  16. THANK YOU!

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