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Electronics and data acquisition of the ALICE TOF detector

Electronics and data acquisition of the ALICE TOF detector. Alici University and INFN, Bologna. Electronics. Amphenol skewclear cables. Twisted pair flat cables. MRPC. VME Crates RO electronics). Front end card. NINO ASIC chip: fast amplifier and discriminator

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Electronics and data acquisition of the ALICE TOF detector

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  1. Electronics and data acquisition of the ALICE TOF detector • Alici • University and INFN, Bologna A. Alici - ALICE TOF Festival

  2. Electronics Amphenol skewclear cables Twisted pair flat cables MRPC VME Crates RO electronics) A. Alici - ALICE TOF Festival

  3. Front end card • NINO ASIC chip: • fast amplifier and discriminator • very low power consuption • 15 ps time resolution From MRPC From MRPC NINO ASIC chips VHDCI connector for signal cables to TOF crates A. Alici - ALICE TOF Festival

  4. Crates with readout electronics MRPC FE cards VME Crates (RO electronics) FEA LV monitor FEA threshold set and monitor FEAC temperature monitor FEA OR signals to CTTM DRM Data Readout Module: 1 per crate LTM Local Trigger Module: 1 per crate CPDM Clock and Pulser Distributor Module: 1 every 2 crates TRM TDC Readout Module: 9 or 10 per crate LHC clock distribution Pulser to MRPC A. Alici - ALICE TOF Festival

  5. TDC Readout Module • Each TRM boards houses 30 HPTDC ASIC and 10 temperature sensors on 10 piggy back boards. • multi-hit and multi events capability • 240 channel with 25 ps resolution piggy-back card (3 HPTDC chips) A. Alici - ALICE TOF Festival

  6. Data Readout Module (DRM) • The DRM provides the VME Master duties in the crate (data readout from TRM boards) and performs other functions, such as: • data transmission and communication with the ALICE DAQ system through Data Detector Link (DDL) • reception and computing of trigger signals through Timing Trigger Control receiver (TTCrx) • VME bus access through a slow control optical link • remote programming of FPGA on VME boards in the crate A. Alici - ALICE TOF Festival

  7. Electronics QA tests Pulser test of SM searching for “dead” and noisy channels: total amount less than 0.5% over the whole TOF (157248 channels) A. Alici - ALICE TOF Festival

  8. TOF trigger The MRPC detector provides very fast signals with relatively low noise  TOF can be used as L0 trigger. Several trigger topology selected during cosmics run. The TOF based trigger is a very usefull tool for TOF and other detector commissioning. TOFforTRD BACKtoBACK A. Alici - ALICE TOF Festival

  9. TOF trigger TRD real spectrum without TOF pretrigger TRD simulated charge spectrum x100 (ns) With TOF pretrigger x100 (ns) A. Alici - ALICE TOF Festival

  10. HMPID triggered by TOF TOFforHMPID Without TOF trigger With TOF trigger charge (ADC) A. Alici - ALICE TOF Festival

  11. TOF DCS • TOF Finite State Machine based DCS completed and working • HV, LV monitor and settings • FE and RO electronics temperature monitor • Cooling and gas service monitor and settings • automatic procedures • alarm handling A. Alici - ALICE TOF Festival

  12. TOF DCS VME boards temperatures TOF SM panel A. Alici - ALICE TOF Festival

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