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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
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

overview
Overview
  • PASI #1 Review Topics
  • Achievements During 2012
  • Plans for PASI #2
    • New Technology Topic Areas
  • Conclusions
pasi 1 review srf processing
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.
pasi 1 review srf linac cavities

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

ASTA

NLS

pasi 1 review magnets
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.
srf vendor qualification
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.
jlab qualification 2010
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.
fnal qualification 2012
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

lhc cc cryomodule r d
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.
lhc cc cryomodule r d1
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

new srf cryomodule @ daresbury
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.
cm integration on alice
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

pasi 2 technologies
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

conclusions
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.