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FEE for Muon System (Range System) Status & Plans

Detailed overview of the Fee for Muon System (Range System) including components, performance proofs, R&D units, estimated PANDA Muon System channels, test stand setups, and future plans. Presented by G. Alexeev on behalf of the Dubna group in 2009.

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FEE for Muon System (Range System) Status & Plans

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  1. FEE for Muon System (Range System) Status & Plans G.Alexeev on behalf of Dubna group Turin, 16 June, 2009

  2. Status : * Basic elements of ‘on chamber’ FE electronics : - 8-channel amplifier Ampl-8.3 -> NIM, A 462 (2001) 494 - 8-channel discriminator Disc-8.3 -> NIM, A 423 (1999) 157 - 32-channel FE board ADB-32 -> NIM, A 473 (2001) 269 * Performance of above FE was proven in experiments : - Forward Muon System of D0/FNAL (50’000 channels) - Muon Wall 1 of COMPASS/CERN (8’500 channels) - Straw tracker of Thermolization/IHEP/Protvino (10’000 channels) * FE electronic R&D units developed and tested on stand with MDTs : - QTC-16, charge-to-time converter (for analog r/o, 16 channels) - A2QTC-16, QTC-16 with double cascade of Ampl-8.3 - A2-16, double cascade of Ampl-8.3, 16 channels - A2DB-32, universal analog/digital unit, 32 channels (to be tested) * Estimated number of FEE channels in PANDA Muon System : - Digital y/n : 32’000/wires + 50’000/strips = 82’000/total - Analog : pending R&D with large prototypes

  3. µ - Filter 700 MDTs FRS 900 MDTs Dipole RICH ECAL Target Spectrometer 2600 MDTs PANDA TOTAL : about 4200 MDTs Muon and Hadron Detection in PANDA by Range System

  4. Mini Drift Tube ( MDT ) module HV connector Gas connector 8 wire connectors

  5. muons 0.5 GeV 1.0 GeV Monte Carlo generated events with Geant 4: 1x1x1 m3 Range System 17x17 cm2 beam spot Beam particles – red Secondaries - green Beam G. Alexeev DLNP, JINR

  6. pions 0.5 GeV 1 GeV G. Alexeev DLNP, JINR

  7. Pion/muon separation in RS at 0.8 GeV

  8. Stand alone (no ECal) FRS response to hadrons Analog signal “Digital” signal (hits) Better than analog mode!

  9. Test stand : different types of MDTs and FE electronics MDT module Ampl-8.3 QTC part

  10. An artistic view of tested MDTs G10 board, 4 strips, 1cm wide each 4 layers, 4 strips on each layer

  11. Track reconstruction with 1cm x 8 cm strips • Tracks are near vertical and close to the center • σ ≈ 0.5 mm

  12. Wire and strip signals Signals after the AMPL-8.3 on 50 Ohm load Single event Averaged

  13. Strip Signal Amplification Card (A2-16) A2-16 card (two cascade Ampl-8.3 with 16 analog outputs). Amplifiers AMPL-8.3 Trace 1: Anode signal, K≈60 mV/μA Trace 2: Strip signal, inverted, K≈480 mV/μA To Amplitude Analysis from MDT Ampl 8.3 Ampl 8.3

  14. Proposal for the analog R/O of the MDT signals of the PANDA MUON TRACKER • Analog R/O for MDT (strips &/or pads) • Using well known Wilkinson principle for Charge-to-Time Conversion • Using F1 TDC chip as proven solution for pipe-line R/O Serial data Interface QTC Signal TDC (F1) AMPL. Iin Q THRout THRin Iout ` TIME G. Alexeev DLNP, JINR

  15. QTC block diagram THRout Vdischarge Analogswitch Comparator OUT Q Integrator from Amplifier discharge completed integration completed 0 Charge time circuit Comparator IN 1 F1-TDC card THRin Conversion time

  16. QTC analog input Voltage on integrator QTC digital output to TDC

  17. QTC calibration for different rates (dead times) ~ 1.5 μs ~ 1.0 μs

  18. QTC card (16 channels) Calibration curve G. Alexeev DLNP, JINR

  19. ADB-16 (preamp) QTC, version 2

  20. Analog R/O for MDT (strips &/or pads) Using well known Wilkinson principle for Charge-to-Time Conversion Using TDC chip as proven solution for pipe-line R/O MDT signals analog R/O of the PANDA MUON TRACKER AA-QTC card 16 ch Serial data Interface Signal QTC TDC Ampl 8.3 Ampl 8.3 16ch THRout THRin Q I in I out ` TIME

  21. A2DB-32 Board* double cascade amplification (0,1-10 uA input signals +/-, Ampl-8.3)* 32 channels analog output +/- (>=50 Ohm load )* 32 channels logic output (ECL, LVDS – Disc-8.3)

  22. Full scale RS prototype (2m x 4m) for 2nd coordinate strip R/O (manufactured, pending for r/o electronics) 45 short MDTs (360 wire r/o channels, maximum) 24 long MDTs (192 wire r/o channels, maximum) 4 m long strips, 1 cm width (192 strip r/o channels) 2 m long strips,1 cm width (360 strip r/o channels)

  23. RS prototype for beam test 1530 mm 1000 mm 1060 mm Fe volume ~ 1 m3 ( ~ 8 t ), 288 MDTs 1 m long 2000 channels of wire r/o + 2000 channels of strip r/o

  24. Plans for 2009 * Equip the full scale prototype with FE electronics for wire and strip r/o * Design and manufacture preamp board for strip r/o (based on Ampl-8.3) * Assemble and test A2DB-32 unit on stand with MDTs and full scale prototype at CERN * Develop r/o scheme for the RS (1 m3) prototype based on experience gained with full scale prototype

  25. Answers to I.Konorov’s QUIZFEE :Detector performance :* Signal amplitude, expected noiseA: 1-10 uA for wire signal and 0,1-1 uA for strip signal,expected noise is negligible for wires (just cosmic rate) andis expected the same for strips (but R&D with large prototypes required)* Time resolutionA: for planned gas mixture (Ar:Co2=70:30) max.drift time ~ 250 ns gives a scale of “MDT’s time jitter”* Hit rate/channel. Distribution over detectorA: hit rate/channel (occupancy) is small, mostly events are generated inForward Spectrometer (FRS in case of Muon System) ; exact answer is pending the results of R&D and MCFEE :* front-end chip, ADC/TDCamplifier Ampl-8.3 + discriminator Disc-8.3; no ADC/any TDC (LVDS input, 32 channels)

  26. * FEE partitioning and location in the spectrometer, radiation conditionsADB-32 boards (ampl+disc card, 32 channels) are located on the periphery of iron absorber (exact location still to be agreed with GSI);no special ‘rad.hard’ requirements – proposed fee has passed radiation test at muon systems (D0/FNAL, COMPASS/CERN)

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