Muon Collider Design Workshop @BNL

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Muon Collider Design Workshop _at_BNL
Road Map to a Muon Collider Can we get there from
here?
Chuck Ankenbrandt Fermilab December 7, 2007
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Good News

• Fermilab management likes muon colliders
• Project X could drive a muon collider
• Lots of interesting work going on
• E.g. Neuffer Neutrino Study 2A front end can be
  shortened
• Still lots of opportunities for creativity and
  innovation

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Bad News

• Muon survival from production to collider is
  O(10-3)
• 50 T solenoids probably can handle only one bunch
  at a time
• We dont have a complete scheme that works for a
  high-luminosity energy-frontier muon collider
• We need a few more miracles
• (cf. Harris cartoon Then a miracle occurs.)
• There is too much resistance to new ideas
• Open-mindedness is necessary
• Criticism should be carefully considered and
  constructive

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Persistence is necessary

• Slip-stacking took 25 years from proposal to
  implementation
• Barrier buckets lots of skepticism decades
  before full use
• MuCool test area took about a decade
• The meek shall inherit the earth
• But its taking too damn long
• I can no longer afford to wait decades, so
• 8-GeV protons CAN be used to make muons
• Alternative collection schemes look interesting
• Coalescing of muon bunches at high energy works
  well, so the development of schemes that allow
  this should be encouraged
• HCCs will be useful (even without rf)

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My opinions

• Roadmap may be helpful, but it must be flexible
• We should identify the most promising paths, i.e.
  approaches to various subsystems
• Baseline scheme or parameter list may be
  premature
• Could inhibit creativity if misinterpreted
• Counter-example beam energy 750 GeV
• Anyone who wants to use muons should be supported
• E.g. stopping muon beams mu to e conversion
  experiment
• Regard them as allies and not diversions
• The muon collider community needs more
  cooperation, collaboration, cross-fertilization