f Fermilab’s Muon Collider Task Force: Overview, Status and Plans Vladimir Shiltsev Fermilab AAC, August 08, 2007

f AAC meeting, August 6-8, Shiltsev2Content  Muon R&D – Strategic Context  Muon R&D at the APC  MCTF activities and plans  Next steps  Budget  Muon R&D Coordination

f AAC meeting, August 6-8, Shiltsev3 FNAL Steering Group : Subgroups  Advice/Oversight (additional constituents)  Make sure that roadmaps being developed are consistent with EPP2010 and P5 recommendations – J. Bagger, S. Dawson, A. Seiden, M. Shochet (chair)  Neutrino Physics (additional constituents)  Develop roadmap for neutrino physics based on NuSAG studies  Flavor Physics: quarks, charged leptons,... (additional constituents)  Develop 10-year plan with reconfiguring existing accelerator complex  Accelerator Facilities (based on technical and resources feasibilities)  Develop options of a roadmap that supports ILC R&D for early start, supports Fermilab as a potential host site, and provides an accelerator- based high energy physics program in case of delayed start – H. Edward, T. Himel, S. Holmes (chair), D. McGinnis, S. Nagaitsev, T. Raubenheimer, V. Shiltsev, M. Tigner, (YKK)  High Energy Colliders beyond the ILC  Develop steps necessary to explore higher energy colliders that might follow ILC or be needed should results from LHC point toward a higher energy than that planned for ILC – H. Edward, V. Shiltsev, M. Tigner (chair), (YKK)

f AAC meeting, August 6-8, Shiltsev4 Excerpts from the Steering Group Report “… ”

f AAC meeting, August 6-8, Shiltsev5 Main points of the Report: Muon Collider  Muon Collider: In contrast to the electron and hadron colliders, demonstrating the viability of a muon collider will require many steps:  exploration of various possible overall schemes,  a specialized proton driver,  various targeting and capture and phase rotation schemes,  various possible six-dimensional (6D) ionization cooling configurations,  various methods of acceleration to high energy of the cooled muons,  storage ring designs and detector configurations.  Each of these steps may involve development of more than one technology. Given the many unknowns, it is not possible to predict with confidence when these explorations could be complete. In a technically limited schedule, the overall result would be paced by the 6D cooling exploration. Significant trial of the current ideas could be in hand on the five-to-ten year time scale.

f AAC meeting, August 6-8, Shiltsev6 Main points of the Report (cont.)  Current Activities:  international MERIT experiment at CERN and MICE at RAL  Neutrino Factory and Muon Collider Collaboration (NFMCC)  Muon Collider Task Force at Fermilab  Schedule and Cost: significant evaluation of cooling and other feasibility items might be carried out in approximately five to seven years given support for a technically limited schedule. A rough comparison with the U.S. ILC development intensity prior to the ITRP decision would indicate the need for a minimum of $20M annually and 100 FTE of appropriate skills.  It would be very advantageous to have more than one muon test facility where cooling and the associated technologies can be carried out…

f AAC meeting, August 6-8, Shiltsev7 Leading Organization: APC Leading Organization: APC

f AAC meeting, August 6-8, Shiltsev8 Fermilab’s Accelerator Physics Center Accelerator Physics Center Technical Division Associate Director for Accelerators Accelerator Division Director APC Mission: Coordinate and conduct accelerator R&D aimed at next-generation and beyond accelerator facilities

f AAC meeting, August 6-8, Shiltsev9 Accelerator Physics Center Accelerator Physics Center Experimental AARD US Particle Accel.School Accelerator PhD Program Peoples Fellows HINS Group Muon Collider R&D Group APC Director Admin Support Summer Student AccPhysProgram Energy Deposition LHC Accel.Syst. ILC Beam Physics Theory & Modeling

f AAC meeting, August 6-8, Shiltsev10 Muon R&D in APC (06/01/07)

f AAC meeting, August 6-8, Shiltsev11 Muon Collider Task Force  Formed in July’06 by FNAL Director:  “… the Muon Collider represents a possible long term path for extending the energy frontier in lepton collisions beyond 1 TeV…”  MCTF formed “…to develop a plan for an advanced R&D program aimed at the technologies required to support the long term prospects of a Muon Collider…”  leaders: S.Geer and V.Shiltsev  Sept’2006: MCTF report delivered outlining a plan for developing the Muon Collider concept based on recent ideas in the realm of ionization cooling, and an associated cooling R&D plan that can be implemented starting in FY2007 (available via AAC Web-page)  MCTF people: FNAL(35), BNL(6), JLab (5), Muons Inc(5), LBNL(4), ANL (1)

f AAC meeting, August 6-8, Shiltsev TeV c.o.m. Muon Collider Low emittance scenario * : Energy per beam750 GeV Average luminosity3e34 cm -2 s -1 Repetition rate65 Hz Total # of muons1e11 # bunches10 β* at IP0.5 cm Transverse emittance2.1 mmmrad Proton driver power1.1 MW * more in talks by R.Johnson and E.Wendt

f AAC meeting, August 6-8, Shiltsev13 The plan focuses on revisiting the overall Muon Collider design, and on developing and testing the cooling channel components that are needed (beyond those needed for a Neutrino Factory). 1.Muon Collider Design and Simulations design studies of all collider systems to establish the required cooling parameters 2. Component Development. Helical Magnets (Muons Inc. concept) HTS High-Field Solenoids (NFMCC&Muons Inc Designs) Pressurized RF Cavities (Muons Inc. concept) 3. Beam Tests and Experiments. High intensity proton beam tests Muon cooling experiments and beam tests MCTF Activities

f AAC meeting, August 6-8, Shiltsev14 MCTF Report (  FY07: 0k$ MCTF + 750k$ total for MTA p-line and NFMCC experiments  FY08 guidance: 2.1M$ M&S (MCTF and NFMCC) + ~3.9M$ SWF 2006

f AAC meeting, August 6-8, Shiltsev15 Major Next Steps  MCTF ’07 report (Fall’07) :  Theory/design/simulations (talk by E.Wendt)  Magnet design/development (talk by M.Lamm)  MANX experiment and MTA beamline construction (talks by K.Yonehara and F.Garcia)  Build p-line to MTA (Shutdown ’07  Jan’08)  Propose 6DMANX experiment (by Jan-Mar’08)  Build and test a section of HCC magnet (FY’08)  Start fabrication, tests (FY08-09) and installation (FY09-10) of 6DMANX experiment  MC simulation and design work (FY’08-’11)  HTS magnets conductor and design work (08-12)

f AAC meeting, August 6-8, Shiltsev16 Muon Cooling is the Key  6D Cooling Experiment  6D MANX experiment:  Preparation of the proposal coordinated by A.Jansson and R.Johnson  See talks by R.Johnson, K.Yonehara, A.Jansson and M.Lamm HCC section model Design FY07  Test in FY08

f AAC meeting, August 6-8, Shiltsev17 Illustrative Muon Collider R&D Long-Range Plan Illustrative Muon Collider R&D Long-Range Plan RF Development Cavities ----MTA---- Power Source Cooling Expts MICE RAL DMANX FNAL DICEwRF FNAL Guggenheim TBD HTS FNAL Brand Z TBD HTS Development Conductor Magnet Studies #1: feasibility #2: performance #3: cost S.Geer A.Tollestrup V.Shiltsev A.Bross

f AAC meeting, August 6-8, Shiltsev18 Muon Collider R&D Facilities S.Geer Muon Test Area: MuCool and HCC

f AAC meeting, August 6-8, Shiltsev19 mu2e Length 25 m (with Target solenoid) Width 11 m Helical Cooling Channel Length 25 m Width 1 m Beam dumper Target Solenoid 8 GeV proton beam Helical cooling channel Spectrometer Solenoid mu2e Experiment and Muon R&D Hall S.Geer K.Yonehara DEBUNCHER ACCUMULATOR  Synergy  6D Muon Cooling test:  6D ionization cooling channel: 1/10 full scale  With RF, HCC, absorber, etc  emittance 1/2x1/2x1/2  RF capture

f AAC meeting, August 6-8, Shiltsev20 FY’08 MCTF M&S Funds (plan)  HCC magnet development 230k$  Collider magnet 200k$  6D Cooling experiment140k$  Muon beamline120k$  HTS R&D550k$  Proton beamline MTA220k$  MCTF RF tests120k$ total1,580k$

f AAC meeting, August 6-8, Shiltsev21 MCTF and NFMCC Co-ordination Mar’07: S. Holmes has asked that a NFMCC & MCTF coordinating committee be formed to coordinate the NFMCC & MCTF Muon Collider activities & ensure the overall R&D is coherent & effective The Muon Collider Coordinating Committee (MCCC) had been formed and had its first meeting March 19 th, 2007 Meets ~1/month, in addition to working weekly meetings of NFMCC and MCTF, annual workshops, etc. MEMBERS: Alan Bross: NFMCC co-spokesperson, MCTF Str.Grp. Member Steve Geer: MCTF co-leader, NFMCC Exec. Board Member Harold Kirk: NFMCC co-spokesperson Vladimir Shiltsev: MCTF co-leader Mike Zisman: NFMCC Project Manager

f AAC meeting, August 6-8, Shiltsev22 Management of Current R&D NFMCC (Project Manager) US MICE MUCOOL component R&D (rf, absorbers) MERIT (& targetry R&D) Design studies (NF + MC) MCTF (APC Management) HCC magnet 6D Manx HTS magnet MTA beams Design studies (MC) Present emphasis on design work & International Activities Present emphasis on design work & activities where FNAL plays major role as host lab. CROSS-PARTICIPATION

f AAC meeting, August 6-8, Shiltsev23 NFMCC-MCTF Protocol 1. The NFMCC and its members are invited to participate in the MCTF program. 2. If the mutually agreed upon activities require MCTF resources, the resources, milestones and deliverables would be defined by an MOU between Fermilab and the NFMCC. 3. NFMCC institutions receiving support for MCTF activities would do so within the framework of the NFMCC (i.e., through the process defined in point 2). 4. Institutions participating in the MCTF that are not presently part of the NFMCC would be encouraged to join the NFMCC if this seems appropriate (decided by mutual discussion between the MCTF and NFMCC leadership). It seems natural that the MCTF manages those activities that require Fermilab to play a significant role as a host laboratory, and the NFMCC manage those activities with an international character We desire and expect NFMCC participation in MCTF managed R&D. To facilitate this, we have formulated a protocol to follow:

f AAC meeting, August 6-8, Shiltsev24 Collaboration with Others  Muons Inc:  excellent collaborator (has $$)  pioneering contributions to LEMC concept and physics of HCC (talk by R.Johnson)  carries out HPRF experiments in MTA (talk by M.BastaniNejad )  contribute to the helical magnet design and MANX design and simulation

f AAC meeting, August 6-8, Shiltsev25 Collaboration with Others (cont)  Other Labs and Universities:  JLab  BNL  IIT  Workshops, meetings, etc:  LEMC Workshop (February ‘07)  PIC mini-workshop (May ‘07)  NFMCC MC workshop (Fall ‘07)

f AAC meeting, August 6-8, Shiltsev26 Summary  FNAL Steering Group report calls for increase of Muon Collider and Neutrino Factory R&D  Since formation of the Accelerator Physics Center, all Muon Collider and Neutrino Factory R&D programs are being coordinated by the APC’s Muon Accelerator R&D Department  1-yr old MCTF progressed along three lines:  Theory and simulations (cooling simulations, collider optics, etc)  Hardware development (HCC section design, HTS conductor, etc)  Experimental beam research (MTA p-line, MANX preparations).  MCTF efforts in near future will be concentrated on  Construction and commissioning of MTA beamline  Experimental studies with proton beam in MTA (HPRF, MuCool)  Development of HCC magnet and HTS conductor studies  Planning, design, construction for 6D MANX experiment  These efforts involve effective collaborations:  With NFMCC: MCCC has made a good start  Muons Inc; other Labs and Universities