MCTF/AARD at Fermilab

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MCTF/AARD at Fermilab

• Andreas Jansson
• Fermilab

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Directors charge

• To Vladimir Shiltsev and Steve Geer
• From Pier Oddone
• Subject Muon Collider Task Force
• I would like to ask the two of you to form and
  lead a Task Force to develop a plan for an
  advanced RD program aimed at the technologies
  required to support the long term prospects of a
  Muon Collider. In doing so I would ask that you
  operate in consideration of the attached charge,
  taking special note of the deliverables requested
  for September 2006 A report outlining a plan for
  developing the Muon Collider concept based on
  recent ideas in the realm of ionization cooling,
  and an associated cooling RD plan that can be
  implemented starting in FY2007. Following receipt
  of this report I will expect to initiate the Muon
  Collider study, including the associated cooling
  channel study and development program, in 2007.
• The Muon Collider represents a possible long term
  path for extending the energy frontier in lepton
  collisions beyond 1 TeV. It is important to
  establish the possibilities and to outline the
  RD program that will be necessary to develop the
  underlying technology base. I look forward to
  working with you to formulate and execute a plan
  to explore these possibilities and to provide
  options for Fermilab and the world HEP program in
  the future.

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MCTF Report/AARD Proposal

• A fresh look at Muon Collider Design
• Collider ring (1.5GeV cm) and tracking
  simulations
• Magnet design studies
• Cooling channel design studies
• Cooling channel component development
• Helical cooling channel
• HTS solenoid
• Absorbers
• Beam tests
• High power proton beam
• Pressurized RF cavities
• Muon beam and muon beam tests

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Proposed budget
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MTA Proton Beam

• Bring (low intensity) H- beam to MTA
• Needed to test pressurized cavities
• AD/EBD has requested 632k for FY07 to build
  transfer line.
• PPD has ordered the switching magnet (long lead
  time) using leftover FY06 funds.
• Expect to have first beam next summer
• High intensity beam
• Needed for additional component testing
• Another 150k required for absorber and
  additional shielding.
• Requested thru MCTF/AARD report

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Muon beam experiment

• Can we do a beam experiment (as opposed to a
  single particle experiment)?
• Complementary to MICE!
• Cooling of a beam would be a more tangible result
  than cooling single particles.
• Could potentially be done with simpler
  instruments (beam profiles vs tracking
  spectrometer).
• Good case for doing it at Fermilab.

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Required muon beam properties
Covariance matrix at beginning of Katsuyas
matching section

• Angular momentum is much smaller than would be
  generated by fringe field.
• The beam has real canonical momentum
• Should be generated inside a solenoid

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Muon beam at MTA

• Lot of infrastructure at MTA (eg cryo) ?
• 400MeV protons ?
• Total pi yield few , usable yield about 1e-5 -
  5e-5
• Can get 1e7 - 1e8 muons per pulse with an
  emittance that roughly fits HCC ?

Protons on 30cm Li rod in 6T field
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Conceptual setup
Cooling channel (instrumented) matching section
Focusing
Pion decay channel
Beam
Pion selection (emittance and momentum)
Target
Muon beam diagnostics (emittance and momentum
spread)
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Fiber tracker work in PPD
Can probably be used directly in beam lines May
be modified for use in LHe?
H. Nguyen
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Plans

• Design and simulate proton target, pion
  collection system and decay channel
• Design muon optics to measure beam properties and
  match to HCC
• Study and optimize HCC parameters for cooling
  experiment (input momentum, cooling partitions,
  beam parameters). Input to magnet development.
• Look at optimal detectors and electronics (eg
  Fiber trackers in LHe).
• Full experiment simulation (eg using MARS and
  G4BL)
• Think about including RF into HCC

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Conclusions

• The MCTF/AARD work is just getting started.
• Strong backing by the Director .
• We need you help to succeed!