1. MICE CC visit at CERN 10-01-2012 Alain Blondel 1   MICE The International Muon Ionization Cooling Experiment

2. MICE CC visit at CERN 10-01-2012 Alain Blondel MICE = critical R&D for neutrino factory and muon collider 2 neutrino factory: accelerate muons and store to produce neutrinos -- flux known to <±1% -- high energy electron neutrinos long baseline oscillation manifests itself by wrong sign muons: LARGE (100kton) magnetized iron detector Golden channel: Or opposite charges (and anti-) + unique ability to test e  

3. MICE CC visit at CERN 10-01-2012 Alain Blondel 09.9.2010 Slide 3 T2KK: T2K 1.66 MW beam to 270 kton fid volume Water Cherenkov detectors in Japan (295km) and in Korea (1050 km); DUSEL: a WBB from Fermilab to a 300 kton WC in Dusel (1300km); SPL 4 GeV, EU-BB and BB+SPL: CERN to Fréjus (130km) project; NF bl is the Neutrino Factory baseline (4000km and 7000km baselines) and NF Py+INO represents the concrete baseline from CERN to Pyhasalmi mine in Finland (2285 km) and to INO in India (7152 km); PS2-Slanic is a preliminary superbeam study at 1500km based on an upgrade of PS2 to 1.66MW and a 100kton Liquid Argon TPC CERN – SPC panel report, 16.03.2010 Figure 2 A representative compilation of sensitivities of some future long baseline projects. Here the fraction of  CP where CP violation can be observed at 3 standard deviations is plotted as a function of  13.

4. MICE CC visit at CERN 10-01-2012 Alain Blondel 4

5. 5 Intense nucl. and hadr. physics Intense Low-E muons Neutrino Factory Higgs(es) Factory(ies) Energy Frontier -> 5 TeV circa 1997-1999 US, Europe, Japan Possible layout of a muon complex on the CERN-Geneva site.

6. MICE CC visit at CERN 10-01-2012 Alain Blondel 6 Muon Collider -- Synchrotron radiation loss and beamstrahlung are reduced as (m e /m  ) 4  Can go to high energy with circular machines (saves loads of RF hardware)  really pointlike lepton lepton collisions at high energy -- direct coupling to Higgs boson scales as (m  /m e ) 2  Higgs factory only 63 GeV/beam for 126 GeV Higgs boson Main challenges: --requires HUGE magnetic fields target solenoid 20T last cooling section 30-50T -- RF in magnetic field

7. MICE CC visit at CERN 10-01-2012 Alain Blondel 7 Muon collider and neutrino factory target area 4 MW proton beam with <3ns bunches on liquid mercury target Tapered 20 T  1.5 T solenoid focuses pions in forward direction Radiation issues on Solenoid (massive shiedinng required)

8. MICE CC visit at CERN 10-01-2012 Alain Blondel Neutrino Factory and Muon Collider rest heavily on -- ionisation cooling -- more generally manipulations of muon beams within solenoid magnetic fields -- MANY VARIANTS! High Brilliance muon beams Principle is straightforward… transverse longitudinal Empty magnet + wedge absorber Magnet filled with (gas) absorber

9. MICE CC visit at CERN 10-01-2012 Alain Blondel 9 Practical realizations are more delicate… IDS Neutrino Factory Cooling Figure of Merit MICE (from Study II 2001)

10. MICE CC visit at CERN 10-01-2012 Alain Blondel 10 Practical realizations vary… But all contain solenoid magnets (for transport and focus) RF cavities (for re-acceleration) and absorbers (for cooling itself. Best is Liq H2)

11. MICE CC visit at CERN 10-01-2012 Alain Blondel 11  Incoming muon beam Variable Diffuser Beam PID TOF 0 Cherenkov TOF 1 Trackers 1 & 2 measurement of emittance in and out Liquid Hydrogen absorbers 1,2,3 Downstream particle ID: TOF 2 KL, EMR RF cavities 1RF cavities 2 Spectrometer solenoid 1 Matching coils 1&2 Focus coils 1 Spectrometer solenoid 2 Coupling Coils 1&2 Focus coils 2Focus coils 3 Matching coils 1&2 10% cooling of 200 MeV/c muons requires ~ 20 MV of RF single particle measurements => measurement precision can be as good as  out /  in ) = 10 -3 -- never done before either…

12. MICE CC visit at CERN 10-01-2012 Alain Blondel 12  Incoming muon beam Variable Diffuser Beam PID TOF 0, TOF 1 Cherenkovs Trackers 1 & 2 Liquid Hydrogen absorbers 1,2,3 Downstream particle ID: TOF 2, KL EMR RF cavitiesRF power Spectrometer solenoid 1 Spectrometer solenoid 2 Coupling Coils 1&2 Focus coils MICE Collaboration across the planet

13. MICE CC visit at CERN 10-01-2012 Alain Blondel  MICE SCHEDULE update October 2011 STEP I STEP IV Q4 2012 and 2013 STEP V STEP VI Run date: Completed EMR run Q2 2012 Under construction:

14. MICE CC visit at CERN 10-01-2012 Alain Blondel Coupling coil (Harbin China) 14 EMR (Geneva) Diffuser (Oxford) RF Amplifier (Daresbury) RF cavities (Berkeley) absorber windows (Mississippi) LiqH2 absorber (KEK) MICE construction: world-wide team effort! AFC Magnet (RAL/Oxford) Trackers (JP-UK-US) Aim for completion in 2016

15. MICE CC visit at CERN 10-01-2012 Alain Blondel  MICE SCHEDULE update October 2011 STEP I STEP IV Q4 2012 and 2013 STEP V STEP VI Run date: Completed EMR run Q2 2012 Under construction: Schedule driver are the coupling coils 1v 1 1

16. MICE CC visit at CERN 10-01-2012 Alain Blondel 16 All MICE magnets are designed under the same principles: -- 4K superconducting coils magnet with axial field ‘solenoids’ -- Each magnet is independently cooled with cryocoolers -- Magnets have no return joke (global shielding in the MICE hall) -- magnets ‘talk’ to each other  large forces and magnetic influence  quench protection is a significant issue -- magnets are operated in continuous mode  but changes in magnet current are frequent every run or few runs has a different magnetic field setting

17. MICE CC visit at CERN 10-01-2012 Alain Blondel 17 Coupling coil construction plan is being assembled -- 3 Large magnets (outer dimension 3m) one for Mucool tests, 2 for MICE -- LBNL responsibility -- project leader was changed now Steve Gourlay (head of accelerator division) -- original plan = construction at HIT Harbin China -- not feasible, Harbin group has desintegrated -- design effort in Shanghai (Pr Li Wang and collaborators) -- construction of coils and parts in Qi Huan company in Beijing -- funding from H IT and DOE in place -- test of coils and assembly of cryostat at/around LBNL or Fermilab -- final assembly and test of {coils+cryostats+cryocoolers+instrumentation) first at Fermilab? Second and third at CERN? -- next steps cryostat drawings review and first coil test

18. MICE CC visit at CERN 10-01-2012 Alain Blondel 18 We are extremely grateful to Marzio Nessi for proposing help from ATLAS Magnet team -- today: first meeting with MICE spokesperson and MICE project manager To present the project and have a first discussion of possibilities -- involvement of CERN team in review and definition of the schedule should be part of process -- next step: visit of Steve Gourlay and LBNL team on 7 of February

19. MICE CC visit at CERN 10-01-2012 Alain Blondel 19 MICE and CERN CERN is a member of MICE MICE is a recognized CERN experiment -- CERN played a key role in design of experiment in 2000-2002 -- provided RF amplifiers -- provide magnetic field measaurement device -- Neutrino team (Ilias Efthymiopoulos + Ole Hansen) participate in MICE step I (beam physics) -- CERN directorate (Myers, Bertolucci) very supportive of involvement of CERN in helping MICE completion in a timely way