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MICE SciFi-tracker prototype
• MICE experiment• Tracker: alternative technologies• SciFi tracker• Single-station prototype – mechanical status• Single-station prototype schedule and team
The MICE apparatus
NB: Particle identification crucial – to avoid bias in require non-muon contamination in final sample must be at most 1‰
TPG – TPC with GEM readout
TrackerBaseline Alternative
Scintillating fibre
• No active electronics/HV close to liquid hydrogen absorber
• No copper close to RF (low pickup)
• 350 fibre: 3-fold doublet; 0.35% X0
• VLPC read-out: high quantum-efficiency, high gain
• Sum neighboring fibres to reduce channel count?
• Light gas (0.15% X0)
• Many points per track
• High precision track recn possible
• Large integration time
• Effect of X-rays on GEMs
MICE SciFi tracker
MICE SciFi group:
UK groups with Fermilab, IIT, UCLA, Riverside, KEK and Osaka
Magnet: warm bore 40 cm
SciFi: active area diameter 30 cm
Single station prototype – mechanical status
#1 ‘services ring’Fibre station:
Detail of design of optical connector
Combining neighbouring channels• 7 scint. fibres to 1 readout fibre: reduce channel count (cost)
pT resolution
(pT)
Baseline: 0.17 MeV/c
7-to-1 mux: 0.27 MeV/c
resolution degrades by ~1.6
Single-station prototype: schedule and team
Single-station prototype: schedule and team
• SciFi team: Japan:
• Y.Kuno, A.Sato, H.Sakamoto, K.Yoshimura, M.Yoshida, UK:
• G.Barber, P.Cooke, R.Gamet, E.McKigney, R.Goncalo, M.Ellis, K.Long, J.Sedgbeer
US:• A.Bross, A.Klier, D.Kaplan, G.Hanson, X.Yang
Preparation for test in D0 VLPC test-stand• This week planning in detail preparation for test• So far have reviewed mechanics and planned for
construction• Still to do:
Electronics (today) Schedule/personnel plan for preparation of software
etc. for run at test-stand at D0
• Very grateful to be allowed access to test-stand!