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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 2 Proposal Masthead DRAFT MANX following MICE at RAL DRAFT Robert Abrams 1, Mohammad Alsharo’a 1, Charles Ankenbrandt 1, Emanuela Barzi 2, Kevin Beard 1, Alex Bogacz 3, Daniel Broemmelsiek 2, Yu-Chiu Chao 3, Mary Anne Cummings 1, Yaroslav Derbenev 3, Henry Frisch 4, Ivan Gonin 2, Gail Hanson 5, David Hedin 7, Martin Hu 2, Rolland Johnson 1, Stephen Kahn 1, Daniel Kaplan 6, Vladimir Kashikhin 2, Moyses Kuchnir 1, Michael Lamm 2, Valeri Lebedev 2, David Neuffer 2, Milord Popovic 2, Robert Rimmer 3, Thomas Roberts 1, Richard Sah 1, Linda Spentzouris 6, Alvin Tollestrup 2, Daniele Turrioni 2, Victor Yarba 2, Katsuya Yonehara 2, Cary Yoshikawa 2, Alexander Zlobin 2 1 Muons, Inc. 2 Fermi National Accelerator Laboratory 3 Thomas Jefferson National Accelerator Facility 4 University of Chicago 5 University of California at Riverside 6 Illinois Institute of Technology 7 Northern Illinois University

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 3 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 4 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 5 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 6 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 7 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 8 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)

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 9 Helical Solenoid As Envisioned: 3.2m long, ~60 coils Ring diameter: 0.5m Graded field 4T->2T Individually powered identical coils Factor of 2 emittance reduction Matching sections needed?

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 10 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

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

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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 13 Helium vs. Hydrogen as Coolant 5m 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: ~8.4X Helium good, hydrogen ~20% better Longit Emittance reduction factor: Helium: ~2.5X Hydrogen: ~2.6X Transverse Emittance reduction factor: Helium: ~1.65X Hydrogen: ~1.86X

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 14 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 15 MICE/ISIS Beam MANX uses same elements New tune for 350 MeV/c Simulations of new beam tune, rates in progress

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 16 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)

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 17 MANX in MICE (Conceptual) MANX w/Matching Off-Axis MANX MICE Phases + MANX

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 18 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 19 MCP TOF Counters for Better P L Example: p = 300 MeV/c muon, γ=3, β = 0.94 For 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 = γ 2 Δt/t Then For Δt = 50 ps resolution: Δp/p = 4.3% For Δt = 5 ps resolution: Δp/p = 0.43%

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 20 Trackers Inside HCC MPPCs Electronics Signals out Power in Active area, fibers Support/mounting frame 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. Bob Abrams and Vishnu Zutshhi (NIU) have an SBIR proposal on this topic. Power in Signals out Feedthroughs Cryostat Vessel Detectors Coils Purpose: Verify trajectories inside HCC - Helps in commissioning - Provides measure of track quality, losses within HCC

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 21 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.

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 22 When Could MANX Run? Longest lead time and cost item is HCC magnet. Construction of HCC magnet may take 3-4 years (Est: M. 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 23 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$ 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 Design10 FTE Procurement 1 FTE Installation/Commissioning 8 FTE

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 24 M. LAMM’s Spending Profile Est. (Not in Proposal)

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 25 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?

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 26 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 27 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

12/11/2008Muon Collider Design Workshop at Newport News, VA USA 28 Proposal Draft Available Proposal draft: Adobe.pdf file: Proposal draft: MSWord.doc file: Additional papers from EPAC and PAC conferences that are relevant to the proposal can be found on our papers and reports page: We encourage all of you to read the proposal, help us improve it, and join the MANX collaboration.