1. Baby MIND Status 28 April 2015 – Third Hyper-K EU meeting E. NOAH A. Blondel, F. Cadoux, M. Capeans, N. Chikuma, H. Da Silva, A. Dudarev, Y. Favre, P-A. Giudici, Y. Kudenko, A. Minamino, O. Mineev, L. Nicola, M. Rayner, G. Rolando, H. Ten Kate et al...

2. Planned use of Baby-MIND type detector Baby-MIND WAGASCI @ J-PARC WA105 @ EHN1 extension Initial study within FP7-AIDA and LBNO Modularity in design simplifies proposed use at various facilities, downstream of: – WAGASCI at J-PARC (2016 onwards) : anti-nu selection efficiencies > 90%. – LAr (WA105) (>2017): Use of MIND detectors integrated from start for studies or Long Baseline experiments in Europe (LBNO): muon charge ID and momentum, tail catching of hadronic showers. – Baby MIND could provide magnetic measurements of muons in 6×6×6m 3 of WA105 for calibration of Multiple scattering momentum meas. – ANNIE at Fermilab, nuSTORM, NUFACT etc... – larger MIND detector for new near detector for HyperK. 2

3. Spokesperson: A. Blondel Deputy Spokesperson: Y. Kudenko Signature: ASAP 2015 Baby MIND MoU with CERN (under discussion) 3

4. Physics (UniGe, Japan): – Proposal for a spectrometer optimized for low energy muons ( 90%. Magnet (CERN, UniGe): – New modular design for magnetization of steel plates: – individual steel plates are magnetized independently, rather than implementing large coils. – Simplified coil assembly, modest power requirements (2 kW). Detector modules (INR, UniGe, UK): – High light yields > 100 photo-electrons, new design of optical connector, custom mechanics. 9000 bars produced in Russia and shipped to Geneva. Electronics (UniGe, Sofia): – New Front End Board developed using CITIROC readout chip. Baby MIND activities summary 4

5. 5 WAGASCI Baby-MIND

6. 6 Varying steel plate thicknesses

7. Detector modules  Module characteristics : 2 planes, X/Y Each plane: 84 plastic scintillator bars (from INR) Custom optical connectors (INR design for AIDA) Carbon fiber envelope 1 st prototype Nov. 2014 50 modules production by Jul. 2015 Modules initially for TASD, some redesign for use with magnet Photosensors: Hamamatsu S12571-025C 1 × 1 mm 2 25  m cells 3000 delivered by 6 Mar. 2015 Cabling test with mock-FEB Photosensor connector: INR design 7

8. Electronics  FEB characteristics : 96 SiPM channels (mini coax. connectors), 84 used for Baby MIND 3 CITIROC ASICs (32 ch charge ampl., trigs, ext. common HV + independent 0/4V) 12-bits 8-ch ADC 40Ms/s/ch 2 x 6Gb/s transceiver (800Mb/s for Baby MIND) USB3.0 (5Gb/s) µC for lab, calib. & maintenance LV & HV power supplies Altera ARIA 5 FPGA (mid-range), firmware : 84 ch. Timing meas (2/2.5ns resolution) Charge meas. (from 12-bits ADC) Baseline computation (filtering) USB3.0 gateway Gigabit protocol for readout (exp.) PCB: 8 layers 120µm space/width lines Impedance & length control (TDC) Schedule: First prototype FEB 11 March 2015 Firmware development ongoing ~ 30 Baby MIND FEBs Dec. 2015 Baby MIND FEB (Photo by Y. Favre 12 March 2015) 8

9. 1800 mm 45 or 90 20 200 Upper half-plate Lower half-plate 9 3500 mm 2000 mm Fe Coil: Al + insulation 10 Dimensions to be confirmed a) b) Upper Aluminium coil: 20 to 100 turns Magnetized steel plates Inserts that connect the two plates: to be optimised for mechanical rigidity and flux lines Lower Aluminium coil: 20 to 100 turns a) b) side view

10. Stray fields: up to 2 cm from surface of steel along z Bx [T] By [T] Bz [T] Magnetized steel plates: B-field # of plates not representative of final detector 10

11. Magnet design and construction Coil prototyping -scale 1:1 -by Sep. 2015 Magnet steel plate engineering design Coil production -40 coils -by Mar. 2016 Rough specifications Steel thickness check with manufacturer + tolerances Steel procurement -heat B/H testing -storage/transport Steel engineering Study integration of coil onto steel tolerances coil block Magnet assembly Input + power supply + instrumentation + safety Support mechanics 150 kCHF 75 kCHF 60 kCHF 11

12. Basic support mechanics Angle brackets anchor steel and detector modules on 2 support rails below. Not shown are telescopic rods with spacers that hold the top of the steel and detector modules in place. Detector module Steel plates (5.5 t) Support rails 12

13. Beam line requirements and design reported under AIDA project: – “Design Study of a Low Energy Beamline” [Ref: AIDA-Del-D8.3] – Low energy muons, pions, electrons 0.5 to 9 GeV/c, lower if possible. – Proposal to implement Very Low Energy (VLE) beamline at the existing H8 line. Characterization: Beamline in North Area at CERN VLE at H8 13

14. Baby MIND MoU “ready” to be signed: – it foresees operation at J-PARC VLE beamline studied under AIDA project, proposing to use existing H8 beamline in the North Area. – documentation: AIDA-Del-D8.3 Comprehensive support from CERN for magnet: – magnet design with experts – coil prototyping for validation followed by production – documentation: EDMS Ref: 1464949 Electronics on track, first prototype FEB available, firmware development ongoing. Detector modules on track: – discussion on detector modules redesign ongoing. Integration with WAGASCI at J-PARC under discussion. Summary 14

15. Back-up 15

16. 16 Neutrino energy and muon momentum

17. 17 Fitting coefficients distribution

18. 18 Scattering angle distributions - 1

19. 19 Scattering angle distributions - 2

20. Baby-MIND magnet schedule 20

21. Baby-MIND detector module schedule 21

22. JFE-EFE steel magnetic properties Used for MICE partial return yoke 22

23. l ” coil is length of 1 turn l solenoid is the slit width t coil is the Al. coil thickness Power supply requirements Al. coil selected: 2.5 mm 23

24. FEB and FPGA schematics 24

25. Steel plate engineering 25

26. Module and Fe plate configuration 26 s1s2s3s4s5s6-7s8-10s11-13s14-16 m1 m2 m3 m4 m5 m6 m7 m8 m9 m10 m11 m12 m13 m14 m15 m16 500 100 20 m0 2000 Case a): 90 mm Case b): 100 mm For all other Fe plates: Case a): 45 mm Case b): 50 mm Case a): 45 mm Case b): 50 mm m: detector module s: steel plate Except this Fe plate: Case a): 90 mm Case b): 100 mm s17-19 500 s20 500 Case a): 45 mm Case b): 50 mm

27. y-middle: ×23 channels 2000×100×10mm 3 y-outer-left: ×20 channels 2000×30×10mm 3 y-outer-right: ×20 channels 2000×30×10mm 3 x1: ×64 channels 3500×30×10mm 3 x2: ×64 channels 3500×30×10mm 3 27 Need minimum 25 cm each side for electronics - if double-sided readout of horizontal bars x1 x2 y Side view Note: Number of channels considers readout chip (e.g. CITIROC: 32 channels) Detector module redesign

28. 28 Detector module CAD

29. Costing # ItemQty Total [kCHF] CERN [kCHF] INR [kCHF] SOFIA [kCHF] UNIGE [kCHF] UK [kCHF] StartEnd Detector modules: passive components 1 Plastic scintillators1000085 40 45 Sep. 13May 15 2 WLS fiber6000m25 Nov. 13Jul. 14 3 Photosensor connectors 2000020 Sep. 13Jan. 15 4 Module mechanics5060 Sep. 14Jul. 15 total detector modules passive comp. 19004001500 Detector modules: photosensors and electronics 5 Photosensors300070 Jun. 14May 15 6 Electronics & DAQ3000ch.90 1575Jan. 14Dec. 15 total photosensors and electronics 16000157570 Magnet: steel and coils 7 Steel plates50150 Mar. 15Dec. 15 8 Magnet mechanics-60 Mar. 15Mar. 16 9 Magnet coil prototype125 Mar. 15Sep. 15 10 Magnet coils64125 Sep. 14Mar. 16 total magnet steel and coils36030000600 Magnet: p.s. and instrumentation 11 Magnet power supply15025 May. 15Feb. 16 12 Magnet safety and instrumentation -25 Jun. 15Apr. 16 total magnet power supply and instr. 755000250 Grand total CERN contrib. INR contrib. SOFIA contrib. UNIGE contrib. UK contrib. Project totals [kCHF] 785350401531070 29