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MICE Status

MICE Status. Excerpt from talks at MuTAC review: http://www.cap.bnl.gov/mumu/conf/MUTAC-070418/MUTAC-agenda-2007.html. Ionisation cooling. Muon cooling is necessary for Neutrino Factory and crucial for Muon Collider Conventional cooling methods do not work; t(m) = 2.2 m s

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MICE Status

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  1. MICE Status Excerpt from talks at MuTAC review: http://www.cap.bnl.gov/mumu/conf/MUTAC-070418/MUTAC-agenda-2007.html

  2. Ionisation cooling • Muon cooling is necessary for Neutrino Factory and crucial for Muon Collider • Conventional cooling methods do not work; t(m) = 2.2 ms • Need fast muon cooling method => ionisation cooling • In principle ionisation cooling will surely work • Energy loss in cooling material, then accelerate in RF cavity • In reality it is not that simple • Delicate technology and integrationproblem • Need to verify by building a realisticprototype • The MICE collaboration will build cooling channel, proof of principle

  3. m MICE cooling channel Coupling Coils 1&2 Spectrometer solenoid 1 Matching coils 1&2 Matching coils 1&2 Spectrometer solenoid 2 Focus coils 1 Focus coils 2 Focus coils 3 Beam PID TOF 0 Cherenkov TOF 1 RF cavities 1 RF cavities 2 Downstream TOF 2 particle ID: KL and SW Calorimeter VariableDiffuser Liquid Hydrogen absorbers 1,2,3 Incoming muon beam Trackers 1 & 2 measurement of emittance in and out

  4. Steps for cooling channel beam line + detector commissionning starts August 2007 STEP1: Oct 07 Solenoid, Tracker PID(TOF/CKOV/CAL) in PHASE I STEP2: Dec 07 PHASE I STEP3: Mar 08 STEP4: Early 09 Cooling componetsin PHASE II STEP5: Summer 09 STEP6: 2010 PHASE II

  5. In this talk… • MICE will be taking data from October 2007 • Steps I, II will allow beam tuning, first measurement of emittance and verification of systematics • A lot of activities going on many front • Activities for MICE Phase I summarised; • Target • Beamline • TOF • Cherenkov • Tracker • Solenoid • Calorimeter • DAQ/Trigger • Software

  6. MICE beam line - overview MICE Target Pion capture Muon transport channel MICE Cooling channel Decay solenoid

  7. Target • ISIS pulses at 50Hz with flat top for ~2ms. • Electromagnetic driver dips target in and out in ~3ms. • Oct-Nov 06 Target test • successfull with 10 A target drive (40 A in the final system) • Review on 6 Mar 07 • Ballistic control of target critical, will be operated 3 months in beam before October run MICE Target Drive mechanism Bellows Gate valve Beam pipe Sheffield, Glasgow

  8. Beam line 3D view in the vault quads refurbishment PSI solenoid PSI sol. cryo in the hall

  9. MICE hall Construction at RAL is in full swing

  10. TOF • Time of flight • Two layers (x and y) of 4 cm wide hodoscopes • 60 ps resolution achieved in test beam • Phototubes/electronics/magnetic shield defined • Construction of TOF0/TOF1 ongoing • All phototubes and scintillator purchased, electronics purchased or under construction • On course for delivery at RAL in August 2007 INFN Milano, Pavia, Roma + Geneva & Sofia

  11. Cherenkov • Aerogel Cherenkov counters with radiators of 2 refractive indicies distinguish p from m n1 = 1.07 n2 = 1.12 conical mirrors

  12. Cherenkov • Drawings ready • Aerogel ordered • Matsushita hydrophobic Silica Aerogel • PMT base modules in progress (FNAL) • Machining starting at • IIT; PMT housings • Iowa; radiator box • Univ. Miss.; aerogel containers and mirros • On Schedule for July 07 delivery Umiss, UCL, IIT, FNAL, Iowa

  13. Tracker • Will sit inside solenoids, reconstruct helical muon tracks with 5 stations of 3 scintillating fibre planes • Each station is composed of three planes of scintillating fibres laid out with 120 degrees radial spacing • Each fibre plane is comprised of a ‘doublet-layer’ in which the fibres in the first layer of the doublet are interleaved with those in the second

  14. Tracker • Doublet-layer production complete at FNAL • Station 5 built (UK, US, Osaka) – first production station – under cosmic test at FNAL • Full production of station started in January 2007 • Station assembly now up to 8th station, plan to have 10 stations by end of May (ICL) • Fermilab technicians helping assembly • Waveguide assembly started in Japan (Osaka) • 1st MICE VLPC cryostat now workingstably with sufficient margin forUK 50Hz AC • AFEIIt boards require new firmwarefor MICE; now under developmentby IIT/FNAL/RAL UK, US, Japan

  15. Spectrometer solenoid • Solenoid assembly now in progress at Wang NMR (Livermore, CA) • 4 cryocoolers purchased and delivered to Wang • Power supplies specified, to be ordered soon • Mandrels built and Winding of • passed vacuum tests 1st solenoid • main coil • nearly done • as of two weeks ago ETA: Nov-Dec 07 LBNL

  16. Calorimeter • KL calorimeter (4 X0 of lead sci-fibres sandwitch) => first recognition of electrons • Under construction at ROMA III, delivery in October 2007 • SW calorimeter (100 x 100 x 80 cm deep scintillator ranger for muon ID) • First prototype layer under construction in Trieste • Aim to operate in 2008 for full downstream PID capability KL calorimeter 65 L=90 60 tracker L=60 SW calorimeter Spectrometer solenoid TOF and shielding Rome III FNAL/Trieste/Geneva

  17. DAQ & Trigger • Adapt DATE framework (ALICE experiment @ CERN) • Readout via VME • Trigger signals and run modes established • Control and monitoring established (Daresbury) • Feb 2007: DAQ test bench set up at Geneva • Mar 2007: Order MICE Stage1 FEE hardware • Jul 2007: Move MICE DAQ system to RAL • Sep 2007: DAQ working in MICE stage 1 Geneva, UK, IIT, Osaka

  18. Software • G4MICE: Basic simulation and reconstruction of MICE is complete • Development work ongoing • About to release improved reconstruction code for tracker • Making progress on PID simulations and reconstruction

  19. Summary • Much progress in all fronts • MICE will start phase I data taking in Fall 2007 • Steps I, II will allow beam tuning, first measurement of emittance and verification of systematics • Things are getting exciting!

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