Muon Accelerators for Particle Physics Achievements and Working Group Plans Jaroslaw Pasternak Imperial College/RAL STFC Mark Palmer Fermilab Proton Accelerators for Science and Innovation Workshop April 3-5, 2013,RAL
θ 13 Great discoveries in 2012 Higgs Daya Bay oscillation result, from arxiv: 1203.1669v2 [hep-ex] 2 April 2012 sin 2 (2θ 13 ) = 0.098 0.013 (PDG) It opens the route towards the search for the CP violation. m H =125.8 0.7 GeV/c 2 (CMS, 4 leptons in the final state) It requires a precise measurement of the properties of the new boson.
Motivation Muons can be used to search for physics beyond the Standard Model (g-2, muon to electron conversion, rare decays etc). Muons stored in the ring can produce a high quality neutrino beam ideal to measure neutrino cross sections and to perform precise oscillation experiments (nustorm, the Neutrino Factory). Due to the mass 200 times larger than electrons muons can be used for the direct s-channel Higgs production (the Higgs Factory). Muon Collider may offer the collisions at the energy frontier using fundamental leptons in circular collider (due to the high suppression of the emission of the synchrotron radiation). Accelerator R&D (on high gradient RF, FFAGs, pulsed magnets etc.) may provide solutions for other applications (proton accelerators, medical etc.).
Progress on the key muon accelerator R&D since the last PASI workshop Hardware projects: MICE Spectrometer solenoids ~fully trained AFC working and measured at RAL Magnetic protection scheme well advanced EMR complete running on cosmics and preparing for shipping Numerous achievements in reconstruction, analysis and software MTA HPRF important results towards the feasibility demonstration Successful tests of multiple RF cavities in the B field Progress on infrastructure EMMA Important results on the closed orbit correction Multiple data sets collected and analysis in the final stage Design studies: IDS-NF New baseline for the large θ 13 Substantial progress on engineering definitions and costing nustorm Experimental program identified Huge progress in accelerator and detector systems Muon Collider Motivation focused on the Higgs Factory after the new boson discovery R&D plan and staging scenarios
The key muon accelerator R&D, direct PASI achievements Huge progress on nustorm - physics case and facility definitions Development of the R&D plan (MAP) and staging scenarios (IDS-NF and MASS) Increased collaborative effort within MICE and IDS-NF Future of EMMA identification of goals and requirements (including a preliminary cost estimation for a new injector and potential new RF system for slow acceleration experiments) Recruitment of the joined Imperial College/FNAL PASI postdoc for MICE and nustorm in the final stage
List of deliverables prepared during the last meeting: Report on long term plan for MICE facility (more definitions from planned next generation 6D/final cooling experiments required). Review results and plans for EMMA and evaluate if an extension is needed. (Input was provided to STFC review on this topic. It triggered a lot of discussions. It helped to identify the goals and requirements including a preliminary cost estimation for a new injector and potential new RF system for slow acceleration experiments - potential synergy with proton applications.) Report on physics case and facility design for the VLENF (HUGE PROGRESS!) Plan for collaborative effort on muon beam diagnostics (progress mainly within the nustorm activity, but also some activities within IDS-NF). Report on post-rdr possibilities for NF (in preparation for the RDR). Report on directions for R&D on Muon Collider including 6D cooling/test facility options (MAP activities). Detector activity for MC explore the possibilities for collaboration. New working group led by R. Lipton and C. Touramanis has been created). Prepare a coherent plan for the 5 year time period (MAP and MASS activities).
Working Group Goals Review the current status of the various projects and ongoing programs Present future directions and new ideas Underline the synergies between the UK and the US programs Discuss the synergies and a strategy to strengthen the collaborative efforts Rediscuss achievements and milestones a Target areas where enhanced collaboration can enable significant strides forward Proton Accelerators for Science and Innovation 7
Day I WG3 Agenda Session 1: Facilities 1. Introduction (MP/JP) - 5'+5' 2. MICE installation/construction - Andy Nichols, RAL-STFC, 15'+5' 3. MICE installation/construction - Alan Bross, Fermilab, 15'+5' 4. MICE status - detectors, analysis, software, etc. - Melissa George, Imperial College, 15'+5' 4. Discussion - 20' Day II Session 2: Facilities II + Neutrinos 1. EMMA results (UK) - S. Machida, ASTeC-STFC, 15'+5' 2. COD correction in EMMA (UK)- D. Kelliher, ASTeC-STFC, 15'+5' 3. Discussion - 30' 4. Status of nustorm studies - David Adey,Fermilab, 15'+5'
Day II (cont) WG3 Agenda (2) Session 3: Low energy muon physics + facilities 1. Low energy muon physics - Y. Uchida, Imperial College, 15'+5' 2. Discussion 20 3. Progress on MTA - Yagmur Torun, IIT - 15'+5' 4. Discussion - 30' Session 4: Neutrinos 1. Status of IDS-NF studies - Scott Berg, BNL, 15'+5' 2. Engineers look at the IDS-NF baseline - N. Collomb, Technology-STFC, 15'+5' 3. Staging scenarios, Chris Rogers, ASTeC-STFC - 15'+5' 4. Discussion - 15'
Day III Session 5: Muons 1. Muon program road map - Mark Palmer, Fermilab,20'+5' 2. Muon Collider scenarios,from Higgs factory to multi-tev collision energy - David Neuffer, Fermilab, 15'+5'. 3. Research on 6D/final cooling channel - Diktys Stratakis, BNL -15'+5'. 4. Discussion - 25' Session 6: Discussions and summary preparation. WG3 Agenda (3) Let s have a fruitful meeting!