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THE TIMING

THE TIMING. Turin VFE-UFSD Bulletin 29th May 2019 FAST Motherboard + Preampl simulations. T32. VLSI. ASIC designers: Jonhatan Olave olave@to.infn.it Federico Fausti fausti@to.infn.it. Geometrical details.

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THE TIMING

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  1. THE TIMING Turin VFE-UFSD Bulletin 29th May 2019 FAST Motherboard + Preamplsimulations T32 VLSI ASIC designers: JonhatanOlaveolave@to.infn.it Federico Faustifausti@to.infn.it

  2. Geometricaldetails • ASIC size: 5 mm x 1.5 mm • pad size: L = 76.5 um; W = 63 um • pad pitch: 90 um • Input pitch: 180 um • bottom pad number: 47 (20 inputs); • top pad number: 51 (40 outputs); • lateral pad number: Sx = 21; Dx = 21 • Total pad number: 140 • FAST: 3 flavors, same pinout  shared PCB

  3. FAST Motherboard OUTPUTS Top levelscheme 50 polesflatconnector shield 3.3 V Bias network How manytrimmers do wereallyneed? Tunable? Voltage regulator FAST x3 1.2 A 1.2 DIG 2.5 IO LM95071 TEMP SENSOR TEST AREA AD5391BSTZ • - Vth • Biaspreamp • What else? DAC CAP TEST SENSOR AREA 1 cm x 1.5 cm TEST PULSE (SMA) HV (SHV) Multiple PIN connector From FPGA/ARDUINO

  4. PCB for FAST: INPUT PADs

  5. PCB for FAST: INPUT PADs SETUP 1: Direct connection

  6. PCB for FAST: INPUT PADs

  7. PCB for FAST: the ABACUS boardlesson • Too many trimmers • Sensor too far from the ASIC (12 mm) • Exaggeratedcompactness hard smdreplacement • No shield for sensro-ASIC • LTC2604 DAC (16 bit)  limited bandwidth • After production voltage divider for DC levels adaption in FPGA-DAC data exchange • LM95071  SPI bus interface; already implemented in Turin projects. • temperature accuracy 0 to 70 °C 1 °C or -40 to 150 °C 2 °C • Temperature resolution 0.03125 °C

  8. PCB and readoutdevelopments • MoVeIT: new PCB for multiple ASIC setup • ABACUS run 2 • FAST readout: collaboration with Milano Bicocca (FPGA in TDC) • Turin INFN + HPTDC

  9. Preamplifiercharacterization

  10. Preamplifiercharacterization MPV

  11. Preamplifiercharacterization Cdet = 6 pF; Qin = trapezoidal; Ibias = 1mA; T = 27 °C; Regular Rf = 20 K; EVO Rf = 11.6 K

  12. Time resolution with UFSD detectors • Study done playing with three important parameters: • Sensor thickness: 35 um, 55 um, 75 um • Sensor geometry: 1x1 mm2, 1.3x1.3 mm2 and 1x3 mm2 • FAST flavors: REGULAR, EVO1 and EVO2 Sensor contribution Electronics contribution + + + +

  13. Time resolution with UFSD detectors CONFIDENTIAL

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