1. Initiative in the neutrino detector sector Segmented magnetised detectors Anselmo Cervera Villanueva Universidad de Valencia BENE meeting RAL (UK) 28/04/06 RAL (UK) 28/04/06

2. 2Overview The golden detector IssuesRequests

3. 3 golden The golden detector for a Neutrino Factory should be able to address -almost by itself (probably with the help of some other technology at a different baseline)-:    CP violation, Mass hierarchy using mostly the golden channel, and others if possible (degeneracies) Segmented Magnetic Detectorgolden A Segmented Magnetic Detector (SMD) is probably the golden candidate A pure iron calorimeter can be built. However: No access to low energy neutrinos. Problems with CP for small   No electron/tau reconstruction. TASD detectors should be better in terms of performance, however: The lower density must be compensated with much larger size The magnetization of large volumes (without iron) is a problem The optimal detector in terms of performance/cost/feasibility/size could be a hybrid detector: SCIN-IRON sandwich  more mass TASD+MECC  tau reconstruction TASD+MECC+IRON … We must come up with a conceptual design for a golden detector

4. 4 Issues Large magnetic volumes Magnetization of iron Air-core magnets Active components: Scientillator + readout production: From 1M channels in NOvA to 10M Engineering tests Photodetectors: follow developments by T2K and NOvA. Try to find the option that maximises the performance/cost ratio SiPMs, MRS, APDS, VLPCs Simulations: study de performance of different configurations in terms of S/N ratio and sensitivity to oscillation parameters. Hybridization: TASD+IRON TASD+MECC … Is it possible to have it on the surface? Maximum detector size for an underground location L.Camillieri P.Strolin M. Selvi A. Bross M. Ellis A. Cervera E. Couce SMD + ECC groups A.Bross J. Peltoniemi

5. 5 Request (preliminary) 2007: 2 STU for simulation and analysis. 1 ENG for detector design 2008: 2 STU for simulation and analysis. 1 ENG for detector design 2 STU+ 2 PDOC for hardware tests and test-beams Money for hardware 2009: 2 STU for simulation and analysis. 3 ENG for detector design 2 STU + 2 PDOC for hardware tests and test-beams Money for hardware 2010: 2 STU for simulation and analysis. 2 ENG for detector design 2 STU + 2 PDOC for hardware tests and test-beams Money for hardware 200000 € 420000 € 660000 € 540000 € 2.7 M € 200000 € 400000 € 300000 € Hardware Manpower(FTE)