1. Steve Geer OsC RAL 21 June, 2010 1 Muon Accelerator Program MUON COLLIDER & NEUTRINO FACTORY R&D in the U.S.  

2. The MAP Initiative Steve Geer OsC RAL 21 June, 2010 2 Muon Collider & Neutrino Factory R&D has been pursued in the U.S. since 1996 by the Neutrino Factory & Muon Collider Collaboration (NFMCC). The Muon Collider R&D activity was enhanced in 2006 by the addition of the Muon Collider Task Force (MCTF) at Fermilab. In October 2009 the DOE-OHEP leadership requested a new unified national organization (MAP) be put in place, and prepare a proposal for an enhanced R&D program: -Motivated by recent progress, and an increased interest in a multi-TeV Muon Collider as a possible future facility at Fermilab

3. Letter from DOE-OHEP Leadership Muon Accelerator Program MAP Steve Geer OsC RAL 21 June, 2010 3

4. MAP Organization now in place “Level 1” “Level 0” * L0, L1, L2 Interim assignments “Level 2” Steve Geer OsC RAL 21 June, 2010 4

5. MAP Proposal ● Submitted by Pier Oddone on behalf of the MAP collaboration, 1 st March 2010. ● 214 MAP participants (at birth) from 14 institutions: ANL, BNL, FNAL, Jlab, LBNL, ORNL, SNAL, Cornell, IIT, Princeton, UCB, UCLA, UCR, U-Miss. ● Anticipate a DOE-OHEP review soon. Steve Geer OsC RAL 21 June, 2010 5

6. MAP will pursue both Neutrino Factory & Muon Collider R&D NEUTRINO FACTORY MUON COLLIDER In present MC baseline design, Front End is same as for NF Steve Geer OsC RAL 21 June, 2010 6

7. R&D Common to both NF & MC (from proton driver to initial cooling channel) Steve Geer OsC RAL 21 June, 2010 7 Front-End Design & Simulations - Pursued in the context of the IDS-NF - Includes site specific studies for NF/MC at FNAL, including using an upgraded Project X as the proton source (coordinator: Keith Gollwitzer) MERIT experiment (Great success – in final analysis phase) RF studies for cooling channel cavities operating in magnetic channels -MuCool Test Area (MTA) program U.S. contributions to MICE (see talks tomorrow)

8. MuCool Test Area Steve Geer OsC RAL 21 June, 2010 8 MUCOOL Test Area built at FNAL for ionization cooling component testing: 5T magnet RF power at 805MHz & 201MHz LH2 handling capability 400MeV beam from linac

9. Muon Collider Decision Tree Pier Oddone 0.5 TeV e + e - 3 TeV e + e - 3-4 TeV  +  - Steve Geer OsC RAL 21 June, 2010 9

10. Muon Collider Motivation COST PHYSICS  If we can build a muon collider, it is an attractive multi-TeV lepton collider option because muons don’t radiate as readily as electrons (m  / m e ~ 207): - COMPACT Fits on laboratory site - MULTI-PASS ACCELERATION Cost Effective - MULTIPASS COLLISIONS IN A RING (~1000 turns) Relaxed emittance requirements & hence relaxed tolerances - NARROW ENERGY SPREAD Precision scans, kinematic constraints - TWO DETECTORS (2 IPs) -  T bunch ~ 10  s … (e.g. 4 TeV collider) Lots of time for readout Backgrounds don’t pile up - (m  /m e ) 2 = ~40000 Enhanced s-channel rates for Higgs-like particles A 4 TeV Muon Collider would fit on the Fermilab Site Steve Geer OsC RAL 21 June, 2010 10

11. Beam Energy Spread Beamstrahlung in any e+e- collider  E/E   2 Steve Geer OsC RAL 21 June, 2010 11

12. MAP Goals ● Deliverables in 6-7 years: -Muon Collider Design Feasibility Report (FY16) - Hardware R&D results → technology choice - MC Cost range (FY16) - Also contributions to the IDS-NF RDR (FY14) ● Will address key R&D issues, including - Maximum RF gradients in magnetic field - Magnet designs for cooling, acceltn, collider - 6D cooling section prototype & bench test - Full start-to-end simulations based on technologies in hand, or achievable with a specified R&D program Steve Geer OsC RAL 21 June, 2010 12

13. Impact of the MAP Plan Key component models NOW MAP PLAN + NF RDR Muon Collider Development Steve Geer OsC RAL 21 June, 2010 13

14. Evolution of Support NFMCC + MCTF Interim MAP Last couple of years NOW (FY10) FY11 ~4 M$~9 M$~10 M$~15 M$ (requested) (~19 M$ enhanced plan) First ~10 years Steve Geer OsC RAL 21 June, 2010 14

15. Physics, Detector & Background Studies ● In addition to MC accelerator R&D, a parallel but coordinated effort is foreseen on physics & detector studies: -Machine-Detector Interface group within MAP will generate machine background files for, and “interface” with the physics-detector activity. - Physics-detector studies leader will participate in MAP “management council”. ● Detailed detector & Background studies from ~10 yrs ago gave encouraging results. A lot has happened since: - New MC lattice design - A decade of detector development -Greater community expectations for detector performance ● New physics, detector, background studies begun: - Kick-off workshop at FNAL November 2009. - Rapid progress since then on shielding design (shielding cone angle reduced from 20deg to 10deg). -Active detector simulation group now being created. -Working towards an initial report ~mid-2011. Steve Geer SPC FNAL 17 June, 2010 15

16. International Aspects ● Neutrino Factory R&D is pursued in an international framework: IDS-NF - The MAP community is committed to making the required contributions to IDS-NF studies ● Muon Collider R&D is pursued mostly in the U.S. - Making it more international would be a good thing - The MICE facility is potentially a wonderful asset for longer term Muon Collider R&D ● Had some good initial experience with joint Fermilab-UK accelerator R&D fellowships focused on muon accelerator R&D areas: -The UK host has been Imperial College - Helps build R&D relationships in areas of common interest (e.g. MuCool RF R&D program, proton source issues, …) Steve Geer OsC RAL 21 June, 2010 16

17. Summary ● There is a new U.S. organization (MAP). The proposed MAP plan is designed to: -Continue support of the ongoing program (including U.S. commitments to MICE and the IDS-NF -Within the next 6-7 years find out whether a Muon Collider is feasible, and roughly what it would cost (cost range). ● The U.S. motivation for MAP is coupled to a muon- based vision for the long-term future of Fermilab. ● International collaboration on the R&D for these very ambitious but game-changing future accelerator facilities is very desirable -Has been very good for the NF R&D program -Would be very healthy for Muon Collider R&D Steve Geer OsC RAL 21 June, 2010 17

18. ADDITIONAL SILDES Muon Collider detector  NF To DUSEL A Vision for the Future at FNAL Steve Geer OsC RAL 21 June, 2010 18