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WP8.5.2 Electronics Options

WP8.5.2 Electronics Options. T2K ND280 TRIP-t DRS4(5) EASIROC/MAROC. DRS4. AIDA WP8.5.2 light yield estimates. EASIROC Description. Number of channels: 32 Analogue core : Internal input 8-bit DAC (0-4.5V) for individual SiPM gain adjustment

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WP8.5.2 Electronics Options

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  1. WP8.5.2 Electronics Options • T2K ND280 TRIP-t • DRS4(5) • EASIROC/MAROC DRS4

  2. AIDA WP8.5.2 light yield estimates

  3. EASIROC Description • Number of channels: 32 • Analogue core : • Internal input 8-bit DAC (0-4.5V) for individual SiPM gain adjustment • Individually addressable calibration injection capacitance • Energy measurement : 14-bit dynamic range • 2 tuneable gains followed by 2 adjustable shapers • Analogue memory (Track & Hold cell) for low gain and high gain • Common 10-bit DAC for threshold adjustment • Variable shaping time: from 25 ns to 175 ns • from 160 fC 320 pC (ie. 1 pe 2000 pe @ SiPM gain = 106) • pe/noise ratio : ~10 @ SiPM gain 106 • Trigger output • pe/noise ratio on trigger channel : ~ 25 • Fast shaper : ~15ns • Trigger on 50 fC (ie. 1/3 pe @ SiPM gain = 106)

  4. EASIROC Schematic

  5. EASIROC Evaluation Board • Enables tests of most of the functionality of the EASIROC. • Full access to slow control 456 bits. • Pins on I/O allow for easy monitoring. • External ADCs for analogue signal tests. Courtesy IN2P3 Omega-LAL – 11/07/12

  6. Test setup in bldg. 595 PC LabVIEW 10.0 DG 535 Pulse Generator Scope GPIB OR32 EASIROC Test Board USB Power Supply

  7. Trigger readout: Latched vsDiscr. Latch Val Evt signal effect Trigger output using latch Direct Trigger output in direct discriminator mode

  8. Preamp feedback tests

  9. Shaper test I/II T&H is OR32 with programmable delay through FPGA

  10. Shaper test II/II 50 ns time constant 80ns 12.5ns 50ns 125ns

  11. Discriminator DAC Scan

  12. Trigger/OR32 Oscillations 7: Quasi stable 5: Low unstable: extra OR32 pulses observed 4: High unstable: extra OR32 pulses observed 2: No signal – Low 3: No signal – High

  13. Outlook PC LabVIEW 10.0 SiPM Scope OR32 EASIROC Test Board USB Power Supply

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