1. MICE SciFi-tracker prototype MICE experiment Tracker: alternative technologies SciFi tracker Single-station prototype – mechanical status Single-station prototype schedule and team

2. The MICE apparatus NB: Particle identification crucial – to avoid bias in  require non- muon contamination in final sample must be at most 1‰

3. TPG – TPC with GEM readout Tracker BaselineAlternative 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% X 0 VLPC read-out: high quantum- efficiency, high gain Sum neighboring fibres to reduce channel count? Light gas (0.15% X 0 ) Many points per track High precision track rec n possible Large integration time Effect of X-rays on GEMs

4. 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

5. Single station prototype – mechanical status #1 ‘services ring’ Fibre station: Detail of design of optical connector

6. Combining neighbouring channels 7 scint. fibres to 1 readout fibre: reduce channel count (cost) p T resolution  (p T ) Baseline: 0.17 MeV/c 7-to-1 mux: 0.27 MeV/c  resolution degrades by ~1.6

7. Single-station prototype: schedule and team

8. 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

9. 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!