MANX Proposal

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MANX Proposal

• Bob Abrams
• Muons, Inc.

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Proposal Masthead
DRAFT MANX following MICE at RAL
DRAFT Robert Abrams1, Mohammad Alsharoa1,
Charles Ankenbrandt1, Emanuela Barzi2, Kevin
Beard1, Alex Bogacz3, Daniel Broemmelsiek2,
Yu-Chiu Chao3, Mary Anne Cummings1, Yaroslav
Derbenev3, Henry Frisch4, Ivan Gonin2, Gail
Hanson5, David Hedin7, Martin Hu2, Rolland
Johnson1, Stephen Kahn1, Daniel Kaplan6,
Vladimir Kashikhin2, Moyses Kuchnir1, Michael
Lamm2, Valeri Lebedev2, David Neuffer2, Milord
Popovic2, Robert Rimmer3, Thomas Roberts1,
Richard Sah1, Linda Spentzouris6, Alvin
Tollestrup2, Daniele Turrioni2, Victor Yarba2,
Katsuya Yonehara2, Cary Yoshikawa2, Alexander
Zlobin2 1Muons, Inc. 2Fermi National Accelerator
Laboratory 3Thomas Jefferson National Accelerator
Facility 4University of Chicago 5University of
California at Riverside 6Illinois Institute of
Technology 7Northern Illinois University
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Background and Plan

• MANX LOI submitted to FNAL AAC in May, 2006 to
  demonstrate ionization cooling in experiment at
  FNAL
• Updated LOI submitted in July, 2007, with
  advances in the technology, also for FNAL
  experiment
• Last year Muons, Inc. joined the MICE
  collaboration
• Proposal is to do MANX as joint FNAL-RAL project,
  and run in the MICE beam at RAL as an extension
  of MICE program
• 12/10/2008 Sent draft to MICE exec board and
  review team for initial review and their
  (hopefully positive) response
• 12/10/2008 Circulated draft to FNAL mgmnt,
  previous, current, and potential new
  collaborators for feedback and to build
  collaboration
• 1/2009 Update and submit proposal to FNAL AAC
  for February 2009 meeting for their evaluation
  and support
• Continue proposal refinement and additional
  reviews/funding approvals
• Design/build HCC at FNAL new components to run
  MANX as soon as possible after present MICE
  program is completed

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Why MANX in MICE?

• Benefits to MANX
• Great savings in cost and effort
• Beam line, spectrometer elements DAC, recon, and
  analysis software can be re-used
• Potential for MICE groups to join MANX

• Benefits to MICE
• Prolongs use of MICE facilities
• Increases return on investment
• Improvements to MICE components
• Potential for MANX groups to join MICE

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MANX Objectives

• Measure 6D cooling in a channel long enough for
  significant reduction of emittance
• Study the evolution of the emittance along the
  channel by making measurements inside the channel
  as well as before and after
• Test the Derbenev-Johnson theory of the HCC
• Advance muon cooling technology

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Other Considerations

• Muons, Inc. is largely responsible for the
  current draft. Future drafts will include more
  contributions from other collaborators.
• MANX is a multi-institutional effort. We need to
  build a larger collaboration
• We are requesting FNAL to continue to support
  the HCC magnet project
• We want to work toward the long-term goals of
  achieving a NF/MC

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System Described in Draft

• MANX Baseline HCC is as in LOIs
• Helical solenoid magnet
• Best understood at this time. Several versions.
• Cooling by liquid helium
• Eliminates safety concerns with use of hydrogen
• Absence of RF gt continuous energy loss
• Eliminates cost and complexity
• Parallel studies of RF ongoing

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Uses of MANX HCC

• Pre-cooler for NF/MC
• Final stage of NF/MC cooling, before
  re-acceleration
• Use for intense stopping muon beams, of interest
  for Mu2e experiment and others
• Epicyclic HCC application to PC/REMEX (see
  Afanasev presentation, this conference)

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Helical Solenoid
As Envisioned 3.2m long, 60 coils Ring
diameter 0.5m Graded field 4T-gt2T Individually
powered identical coils Factor of 2 emittance
reduction Matching sections needed?
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Matching Sections Scheme 1
G4beamline representation of 2 period MANX HCC
with 1.5 period long matching sections
positioned between the MICE spectrometers
6D Emittance evolution
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Scheme 2 Off-Axis, No Matching Magnets
G4beamline representation of off-axis matching
configuration where HCC is placed at a 45º
angle to the MICE spectrometer so that beam is
oriented along reference path at entrance to HCC.
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Scheme 2, Off-Axis (contd)

• Losses
• No losses upon entering HCC
• acceptance of the HCC is 50 larger than MICE
  spectrometer
• Significant losses upon exit from HCC into
  downstream spectrometer.
• Design being optimized to reduce these losses.
• Also investigating shorter matching sections
  (0.5 period)

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Helium vs. Hydrogen as Coolant5m HCC Pre-Cooler
Example
HCC pre-cooler filled with liquid helium (red)
liquid hydrogen (blue) or With (dashed) and
without (solid) 1.6 mm thick Al windows on each
end.
Transverse Emittance reduction factor Helium
1.65X Hydrogen 1.86X
Longit Emittance reduction factor Helium
2.5X Hydrogen 2.6X
6D Emittance reduction factor Helium 7X
Hydrogen 8.4X Helium good, hydrogen 20 better
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Comparison of MANX and MICE

• MANX beam 350 MeV/c, MICE 250 MeV/c
• MAX energy loss gtMICE energy loss in cooler
• MANX cooling factor greater (2 vs. 0.15)
• MANX (no RF) uses all beam, MICE (with RF) must
  use particles that are in Synch w/RF(10)
• MANX needs better longitudinal momentum
  measurement for 6D emittance

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MICE/ISIS Beam
MANX uses same elements New tune for 350
MeV/c Simulations of new beam tune, rates in
progress
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Layout of MANX in MICE Hall
Move downstream Tracker and Cal
farther Downstream (or transversely)
Remove MICE cooling apparatus Install longer MANX
HCC w/matching Sections (or rotate without)
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MICE Phases MANX
MANX in MICE (Conceptual)
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Upgrades for MANX in MICE

• We are examining all of the MICE components for
  upgrades/additions
• So far, improved TOF is identified
• MCP device (H. Frisch, U. of Chicago)
• Additionally, internal tracker planes are needed
  in HCC
• Scint-fiber w/MPPCs (D. Hedin, V. Zutshi, NIU),
  or
• Scint-fiber w/VLPCs a la MICE

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MCP TOF Counters for Better PL
Example p 300 MeV/c muon, ?3, ß 0.94 For
L3m, t 10.6 ns
?p/p ?2 ?t/t Then For ?t 50 ps resolution
?p/p 4.3 For ?t 5 ps resolution ?p/p 0.43
Tom Roberts and Henry Frisch (U. Chicago)
submitted an SBIR proposal for G4BL simulation
of MCP gain for TOF counters with microchannel
plates. Recent progress on low-cost large-area
nanopore MCP materials
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Trackers Inside HCC
Scintillating fiber planes Similar to MICE
spectrometer. Use MPPCs(SiPMs) and onboard
readout electronics
Consider 4 trackers (x, u, v(?) per set and
possibly 2 more outside.
Purpose Verify trajectories inside HCC - Helps
in commissioning - Provides measure of track
quality, losses within HCC
Bob Abrams and Vishnu Zutshhi (NIU) have an SBIR
proposal on this topic.
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Progress on HCC 4-Coil Model

• Initial 4-coil model has been designed and
  constructed. Now being tested. Ran at 13500A at
  4.2K, (designed for 9500A).
• Field mapping starting.

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When Could MANX Run?

• Longest lead time and cost item is HCC magnet.
• Construction of HCC magnet may take 3-4 years
  (Est M. Lamm _at_ July, 2008 MANX Collab Mtg)
• Design (1 year)
• Engineering (1 year)
• Acquisition ( 1 year)
• Installation and commissioning ( 1 year)
• Assume resources and match technical
  schedule!!
• If design starts in 2009, 4 year schedule leads
  to 2013, about 1 year after MICE finishes

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M. Lamms Estimate of CostEffort(Not in
Proposal)

• Cost (MS) and effort estimate guided by 4 coil
  demo LHH IR quad cryostat experience
• Engineering Design 100K
• Tooling 100K
• Main Coil (inc. Cryostat) 2000K
• Matching Section (inc. Cryostat) 3000K
• Feed Box 100K
• Magnet commissioning 500K
• Total 5800K

Conceptual Design 9 FTE Engineering
Design 10 FTE Procurement 1
FTE Installation/Commissioning 8 FTE
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M. LAMMs Spending Profile Est.(Not in Proposal)
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MANX Funding Issues(Not addressed in draft
proposal)

• We seek positive recommendation by AAC to support
  FNAL-RAL MANX project to secure FNAL resources
  (staff and ?)
• Design and engineering of HCC may be considered
  as within the proposed Muon Accelerator National
  5-year Plan. Construction of full HCC is beyond
  5-year plan and would need funds and resources
  from outside the plan to build it on our
  technical schedule.
• As HCC could be used for stopping muon beam,
  resources could come from that source (?)
• Some additional SBIR/STTR funds (if granted)
• Other as yet un-named players?

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Much Work Remains

• Simulations of 350 MeV/c beam tuning, µ rates,
  backgrounds
• Simulations of full MANX spectrometer including
  HCC and new detectors
• Reconstruction and fitting of tracks in HCC
• Sensitivity analysis, field accuracy
  requirements, statistics needed, running time
  estimates
• Calibration procedure, run conditions
• Review all MICE components for use in MANX
• Analysis refinements and additions to MICE
  analysis SW
• Help with new detectors, electronics, and other
  components

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Summary

• We have a draft of our (mainly Muons, Inc.)
  concept of a full muon cooling demonstration
  experiment at RAL/MICE.
• We want to build the collaboration, and we seek
  input from potential collaborators on the
  proposal and on the best way forward.
• We want to do what is best for the muon collider
  community, and meet our existing and future
  commitments

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Proposal Draft Available
We encourage all of you to read the proposal,
help us improve it, and join the MANX
collaboration.
    Proposal draft Adobe .pdf file http//www.mu
onsinc.com/tiki-download_wiki_attachment.php?attId
305pagePapers20and20Reports        Proposal
draft MSWord .doc file http//www.muonsinc.com/t
iki-download_wiki_attachment.php?attId304pagePa
pers20and20Reports       Additional papers from
EPAC and PAC conferences that are relevant to the
proposal can be found on our papers and reports
page   http//www.muonsinc.com/tiki-index.php?pag
ePapersandReports