WP8.5.2 TASD and MIND Detectors – A few points for discussion...

1. WP8.5.2 TASD and MIND Detectors – A few points for discussion... E. Noah - 17.05.2012

2. Hardware questions to be addressed • General: • What performance criteria do we aim for? • Do we operate TASD and MIND in parallel? • Do we assume we share TASD and MIND components wherever possible (scintillator/SiPM/electronics)? • Do we go for 2 planes per module (XY) or 3 planes per module (UVW)? • SiPM: • What type of SiPMs (overall size, shape square/circular, cell size)? • What type of packaging? • What should we address as questions during “small” R&D phase on SiPMs (Temperature stability, coupling to WLS, variability)? • Do we have scope for SiPMs with integrated digital circuitry? • How do we address procurement of SiPMs? • Plastic scintillator: • What shape of scintillator is optimal? • Should we assume same shape for TASD and MIND? • Do we have scope to investigate new manufacturing possibilities? • Connectors: • Where do we place connectors (WLS-SiPM)? • Do we need to develop readout boards placed close to the scintillators (stability of SiPM temperatures)? • Magnetisation of MIND: • How do we best optimise the geometry of the MIND prototype detector? • Should we pursue Superconducting Transmission Line technology? • Electronics: • What examples can we draw from (MINOS CalDet tests at CERN of PS?, ND280?) • What other projects might be interested to share/contribute?

3. Simulation questions to be addressed • General: • Do we adopt a common framework? • How best to compare real detectors from test beam detectors (i.e. v. different sources/sizes). • Any idea what happened to Minos calibration detector analysis? • Dimensioning the test beam prototypes: • How should the source term be described? (e.g. generation at random on XY detector front plane within 10x10cm, z=0). • What information is required from WP8.2.1 (beam description)? • What is missing in the current tools? Kalman filter seeding optimised for muons, how to optimise for pions (done already?)? • How to handle hadron showers? • How to handle electron showers? • Far detector: • What parameters are needed for far detector simulations? • What are expected detected particle energy spectra for a 10-13 GeV NF?

4. Example beam composition MiniBooNE - Proton beam 8 GeV

5. MINOS CalDet • MINOS CalDet Tests at CERN provide good example on how such a test can be run: • References for calibration procedures tested with CalDet: • NIM A 556 (2006) 119-133 • Reference for electronics (comparison of near and far detector, and CalDet) and analysis of data online: • Systematic comparison of near and far detector readout systems, Thesis, Anatael Cabrera NIMA 637 (2011) p25-46

6. MINOS CalDet CalDet detector at T7 East area in dual readout configuration: ND and FD electronics

7. PS T7 Beam for CalDet

8. Minos calibration detector • Used to develop and demonstrate calibration procedure for both near and far detectors • Unmagnetized: in contrast with MINOS near and far detectors • Tested off PS 24 GeV/c, E.H., dual polarity, mixed composition (e,μ,p,π), 0.2-3.6 GEV/c (T11)and 1-10 GeV/c (T7)? • Procedure corrects for: • Gain non-uniformity • Gain drift over time • PMT and electronics non-linearity • Non-uniformity in strip light output • Attenuation in optical cabling • Temperature dependent response variations Ref: NIM A 556 (2006) 119-133

9. MINOS Detector Performance

10. Muon selection over CalDet energy range

11. MINOS Near Detector • 980 tons, 100m underground • Veto region (20 planes) eliminates background from neutrons produced upstream of detector • Target region (40 planes) any useful neutrino interaction will have its vertex here. • Hadron region (60 planes) used to contain hadron showers resulting from most neutrino interactions. • Spectrometer region (160 planes) used to measure muons in νμ interactions and extract momentum based on curvature in B-field. • Rate of cosmic muons: 20 Hz • Rate of neutrino events: 10 events per spill at nominal luminosity for low energy beam