12/11/2008Muon Collider Design Workshop at Newport News, VA USA 1 MANX Proposal Bob Abrams Muons, Inc

12/11/2008 Muon Collider Design Workshop at Newport News, VA USA

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MANX Proposal

Bob Abrams

Muons, Inc.


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Proposal MastheadDRAFT MANX following MICE at RAL DRAFT

Robert Abrams1, Mohammad Alsharo’a1, 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 Facility4University of Chicago

5University of California at Riverside6Illinois 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 –> 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 SolenoidAs Envisioned:3.2m long, ~60 coilsRing diameter: 0.5mGraded field 4T->2TIndividually powered identical coilsFactor 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 (cont’d)

• 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.

6D Emittance reduction factor: Helium: ~7X Hydrogen: ~8.4XHelium good, hydrogen ~20% better

Longit Emittance reduction factor: Helium: ~2.5X Hydrogen: ~2.6X

Transverse Emittance reduction factor: Helium: ~1.65X Hydrogen: ~1.86X


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Comparison of MANX and MICE

• MANX beam 350 MeV/c, MICE ~250 MeV/c• MAX energy loss >MICE 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 elementsNew tune for 350 MeV/c

Simulations of new beam tune, rates in progress


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Layout of MANX in MICE Hall

Move downstreamTracker and Cal fartherDownstream (or transversely)Remove MICE cooling apparatus

Install longer MANX HCC w/matchingSections (or rotate without)


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MANX in MICE (Conceptual)

MANX w/Matching

Off-Axis MANX

MICE Phases + MANX


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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, γ=3, β = 0.94For L=3m, t = 10.6 ns

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

Δp/p = γ2 Δt/t ThenFor Δt = 50 ps resolution: Δp/p = 4.3%For Δt = 5 ps resolution: Δp/p = 0.43%


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Trackers Inside HCC

MPPCs

Electronics

Signals out

Power in

Active area, fibers

Support/mounting frameScintillating fiber planesSimilar to MICE spectrometer.Use MPPCs(SiPMs) and onboard readout electronics

Consider 4 trackers (x, u, v(?) per set and possibly 2 more outside.

Bob Abrams and Vishnu Zutshhi (NIU) have an SBIR proposal on this topic.

Power inSignals outFeedthroughs

Cryostat Vessel Detectors Coils

Purpose: Verify trajectories inside HCC - Helps in commissioning - Provides measure of track quality, losses within HCC


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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 @ 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. Lamm’s Estimate of Cost&Effort(Not in Proposal)

Cost (M&S) and effort estimate guided by 4 coil demo + LHH IR quad cryostat experience

Engineering Design $ 100KTooling $ 100KMain Coil (inc. Cryostat) $2000KMatching Section (inc. Cryostat) $3000KFeed Box $ 100KMagnet commissioning $ 500KTotal $5800K

Conceptual Design 9 FTEEngineering Design 10 FTEProcurement 1 FTEInstallation/Commissioning 8 FTE


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M. LAMM’s Spending Profile Est.(Not in Proposal)

0

1000

2000

3000

4000

1 2 3 4

Year of Project

M&

S (

K$)


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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

Proposal draft: Adobe .pdf file:http://www.muonsinc.com/tiki-download_wiki_attachment.php?attId=305&page=Papers%20and%20Reports

Proposal draft: MSWord .doc file:http://www.muonsinc.com/tiki-download_wiki_attachment.php?attId=304&page=Papers%20and%20Reports

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?page=Papers+and+Reports

We encourage all of you to read the proposal, help us improve it, and join the MANX collaboration.

http://www.muonsinc.com/tiki-download_wiki_attachment.php?attId=305&page=Papers%20and%20Reports







Documents

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 1 MANX Proposal Bob Abrams Muons, Inc