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MICE Updates

MICE Updates. Target. Beamline Target Decay Solenoid Beam Monitors Time of Flight Counters Spectrometer Coupling Coil. Dipole 1. BM1. BM2. Decay Solenoid. CKOV A,B. Terry Hart, NFMCC Friday Meeting, August 15, 2008. MICE Beamline. Target. Target. Dipole 1.

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MICE Updates

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  1. MICE Updates Target • Beamline • Target • Decay Solenoid • Beam Monitors • Time of Flight Counters • Spectrometer • Coupling Coil Dipole 1 BM1 BM2 Decay Solenoid CKOV A,B Terry Hart, NFMCC Friday Meeting, August 15, 2008

  2. MICE Beamline Target Target Dipole 1 • In-beam target system fine • New off-line system failure • Wear on upper bearing • Partially taken apart, sent to RAL Metrology group • Initial results: shaft not moving co-linearly with bearing axis • Continued investigation BM2 BM1 Decay Solenoid CKOV A,B Target: Titanium paddle dipped into ISIS proton beam to produce pions Decay Solenoid: Focuses muon beam coming from pion decay BM1, BM2: scintillating fiber beam line monitors

  3. MICE Beamline Target Decay Solenoid Dipole 1 • Cool-down complete with liquid helium in cryostat • Power tests started Aug. 4 • Results and latest status? BM2 BM1 Decay Solenoid CKOV A,B Target: Titanium paddle dipped into ISIS proton beam to produce pions Decay Solenoid: Focuses muon beam coming from pion decay BM1, BM2: scintillating fiber beam line monitors

  4. MICE Beamline Target BM1,2 Dipole 1 • Beam seen in beam monitors on July 11 • Quadrupoles off • Plots on next page BM2 BC1 BM1 Decay Solenoid CKOV A,B Target: Titanium paddle dipped into ISIS proton beam to produce pions Decay Solenoid: Focuses muon beam coming from pion decay BM1, BM2: scintillating fiber beam line monitors

  5. - FNAL Beam Monitors BC 1,2 • July 11 • Quadrupoles off

  6. MICE Beamline Time of Flight Counters Target • First set of counters installed • First beam profiles taken on July 20. • Plots on next page Dipole 1 BM2 BC1 BM1 Decay Solenoid CKOV A,B ToF Target: Titanium paddle dipped into ISIS proton beam to produce pions Decay Solenoid: Focuses muon beam coming from pion decay BM1, BM2: scintillating fiber beam line monitors

  7. Time of Flight Counters Horizontal Profile Vertical Profile

  8. Spectrometer Update • Possible modifications to reduce heat load on intermediate shield • Training of coils under full field underway • Modifications to room temperature leads • Improve thermal connection to first stage of cryocooler • Add liquid nitrogen cooling volume • Retest thermal behavior before shipment to FNAL • Ben Freemire, Michael Wojcik to give software update May need to postpone magnetic field measurements until both spectrometers are at RAL

  9. Coupling Coil Update • Work resumed at ICST at HIT • Technicians being trained in coil winding techniques • Consultant and designers on board • Orders to be placed for test cryostat for “large test coil” • Same diameter • ¼ length • Tentative finish in early December to be followed by progress review • Winding procedure under review at LBNL • Test coil winding underway as soon as August 20 Coupling Coils

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