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EUSO PAYLOAD ELECTRONICS OVERVIEW

EUSO PAYLOAD ELECTRONICS OVERVIEW. LABEN S.p.A. PAYLOAD DEPARTMENT. A FINMECCANICA COMPANY. EUSO ELECTRONICS DRIVERS:. At least 200000 pixels to read out Max 2.5 meters Focal Surface diameter Single photoelectron counting capability Limited power consumption

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EUSO PAYLOAD ELECTRONICS OVERVIEW

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  1. EUSO PAYLOAD ELECTRONICS OVERVIEW LABEN S.p.A. PAYLOAD DEPARTMENT A FINMECCANICA COMPANY

  2. EUSO ELECTRONICS DRIVERS: • At least 200000 pixels to read out • Max 2.5 meters Focal Surface diameter • Single photoelectron counting capability • Limited power consumption • Single Point Failure Tolerant architecture A FINMECCANICA COMPANY

  3. EUSO PAYLOAD ELECTRONICS:BASELINE ASSUMPTIONS 89 Independent Macrocells 36 PMT per Macrocell 64 anodes per PMT TOTAL: 205056 pixels on 3204 PMTs Nom & Red Instrument Control Unit (ICU) A FINMECCANICA COMPANY

  4. EUSO PAYLOAD ELECTRONICS A FINMECCANICA COMPANY

  5. EUSO FRONT END MAIN EFFORT A FINMECCANICA COMPANY

  6. MACROCELL ELECTRONICS: • Anode Front End Electronics (ASICs) • Macrocell Readout Electronics (FPGA, Memories) • Power Supply (LVPS, HVPS) A FINMECCANICA COMPANY

  7. MACROCELL LAYOUT EXAMPLE: A FINMECCANICA COMPANY

  8. ANODE FRONT END • Biasing Network (Divider, filters) • Array of ASICs Each ASIC include: - Anode-level discriminator (analog threshold) - Pixel-level discriminator (digital threshold) - Control lines (GTU reset, Inhibit) - X,Y, PH_CNT outputs - Mask registers - Serial I/F for settings A FINMECCANICA COMPANY

  9. MACROCELL READOUT: A FINMECCANICA COMPANY

  10. PMT HV BIASING • Single HVPS for each Macrocell (36 MA-PMTs) PMT bias distribution on the Macrocell to be investigated • At least two HVs for split-divider operation: HV1 = -900V nominal, HV2 = -300V nominal • HV setting via TC HV1/HV2 fixed ratio • Grounded anodes configuration (to simplify anode signal pick-up): Need for cathode guarding ! A FINMECCANICA COMPANY

  11. PMT HV BIASING A FINMECCANICA COMPANY

  12. MACROCELL POWER BUDGET A FINMECCANICA COMPANY

  13. ICU ELECTRONICS: • SYSTEM TRIGGER (S/W reconfigurable, operative modes to be defined.) • Focal Surface I/F (Science data & TM/TC functions) • uP (Processing needs to be traded off during definition study) • DATA BUFFER & CEPF I/F • CEPF PWR I/F • LOCAL DC/DC CONVERTER A FINMECCANICA COMPANY

  14. ICU ELECTRONICS: • Main & Redundant physical allocation to be traded-off (One-Box or Two-Boxes) A FINMECCANICA COMPANY

  15. FURTHER POSSIBLE ICU FUNCTIONS:(Not included in the budgets) • Thermal control • Shutter actuation • On-board calibration (laser / flashlamps actuation) A FINMECCANICA COMPANY

  16. ICU LAYOUT EXAMPLE: A FINMECCANICA COMPANY

  17. GENERAL ELECTRONICS TOPICSFOR PHASE “A” STUDY: • Improved definition of electronics requirements • MAPMT-ASIC mechanical and electrical interfaces detailed study • MAPMT-HV biasing network study • Macrocell layout definition (size trade-off) • System Trigger detailed definition • ICU requirements definition & architecture trade-off • Macrocells-ICUs interfaces study (power distr. & communication) • Update budgets for: mass/power/memory/data rate/calculationpower A FINMECCANICA COMPANY

  18. SINGLE DETECTOR UNIT

  19. TIMING EXAMPLE

  20. PHOTON TIMING PICK-UP

  21. TRIGGER LAYERS

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