Takashi Matsushita Imperial College T. Matsushita 1 MICE Status Excerpt from talks at MuTAC review:

T. Matsushita 2 Ionisation cooling Muon cooling is necessary for Neutrino Factory and crucial for Muon Collider Conventional cooling methods do not work;  = 2.2  s 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 integration problem Need to verify by building a realistic prototype The MICE collaboration will build cooling channel, proof of principle

T. Matsushita 3 MICE cooling channel  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 TOF 2 particle ID: KL and SW Calorimeter 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

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

T. Matsushita 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

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

T. Matsushita 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 Drive mechanism Bellows Gate valve Beam pipe MICE Target Sheffield, Glasgow

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

T. Matsushita 9 MICE hall Construction at RAL is in full swing

T. Matsushita 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

T. Matsushita 11 Cherenkov Aerogel Cherenkov counters with radiators of 2 refractive indicies distinguish  from  n 1 = 1.07 n 2 = 1.12 conical mirrors

T. Matsushita 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

T. Matsushita 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

T. Matsushita 14 Tracker UK, US, Japan 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) 1 st MICE VLPC cryostat now working stably with sufficient margin for UK 50Hz AC AFEIIt boards require new firmware for MICE; now under development by IIT/FNAL/RAL

T. Matsushita 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 1 st solenoid main coil nearly done as of two weeks ago ETA: Nov-Dec 07 LBNL

T. Matsushita 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  60 L=60  65 tracker Spectrometer solenoid TOF and shielding KL calorimeter SW calorimeter L=90 Rome III FNAL/Trieste/Geneva

T. Matsushita 17 DAQ & Trigger Adapt DATE framework (ALICE 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

T. Matsushita 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

T. Matsushita 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!