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HCAL Front End Boards

HCAL Front End Boards. Status of the FE Boards Parameter Shift Register Time Schedule Test Setup. HCAL – Technical Meeting. Mathias Reinecke. 24.2.2005. HCAL Base Board - HBAB. Features : Base board for 6 Analog Boards (HAB) Communication with DAQ (CERC) Trigger for CMB board

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HCAL Front End Boards

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  1. HCAL Front End Boards • Status of the FE Boards • Parameter Shift Register • Time Schedule • Test Setup HCAL – Technical Meeting Mathias Reinecke 24.2.2005

  2. HCAL Base Board - HBAB • Features : • Base board for 6 Analog Boards (HAB) • Communication with DAQ (CERC) • Trigger for CMB board • Two versions : ECAL left and right populated Status : - 2 Boards in production (‚right populated‘), production + assembly : 3-4 weeks - design of ‚left-populated‘ : finished in 1 week Mathias Reinecke HCAL – Technical Meeting 1

  3. HCAL Base Board - HBAB ‚Left-Populated‘ Dimensions : 47.5 x 19 cm² Height (Board + Components) : 15.5 mm Mathias Reinecke HCAL – Technical Meeting 2

  4. HCAL Analog Board - HAB • Features : • Carries one LAL ASIC (18 SiPM channels) • HV filtering and SiPM biasing • Communication with HCAL Base Board • - Temperature monitor on board Status : - 2 Boards fully assembled - 26 Boards available (not assembled) Mathias Reinecke HCAL – Technical Meeting 3

  5. HCAL Analog Board - HAB Temperature Monitor Parameter Shift-Reg ASIC Connector to Base Board Dimensions : 9 x 6.2 cm² Analog Line Driver Analog Test Output Mathias Reinecke HCAL – Technical Meeting 4

  6. HCAL Testboard • Features : • Base board for one HAB • - Interfaces 18 SiPMs • Corresponds to ECAL ‚Left Populated‘ • - Charge injection inputs (test) Status : - 2 boards fully assembled - one board unassembled (spare) Mathias Reinecke HCAL – Technical Meeting 5

  7. HCAL Testboard Power CMB Control Charge Injection Dimensions: 16 x 16 cm² SiPM Interface, 18 chns. HAB Test Outputs (SRIN, TCALIB) DAQ Interface Mathias Reinecke HCAL – Technical Meeting 6

  8. Parameter Shift Register Task : Definition of operating parameters Total length : 960 bits (one shift reg. for 6 HABs) Loading clock : 1..10 kHz Loading time @ 1 kHz : 1 sec per Base Board Switch : physics / calibration mode Mathias Reinecke HCAL – Technical Meeting 7

  9. Timeline • Risks / Delays : • Test of series production : board by board till mid August 2005 • (500 HABs, 80 HBABs). • Manpower for DAQ software and series test ? • Design errors on HBABs (delay per redesign : 7 weeks) • A lot of unknown features : Noise, temp.-stability, dynamic • range, mechanical interface to SiPM cassette, CMB interface • (ground loops etc.) Mathias Reinecke HCAL – Technical Meeting 8

  10. Test Setup • Series Board Tests (HAB) : • Power dissipation • - Loading shift register • - Noise/Pedestal level • - Calibration pulse / Readout • - HV strength • Test of HBABs with HABs : • - Communication with DAQ • - HV strength Charge Injection Mathias Reinecke HCAL – Technical Meeting 9

  11. Summary • System concept can be tested now !! • Characterization with SiPMs : 2nd half of March • First HCAL layer (series production) : July 2005 • Time schedule is tight : • no redesigns included, • implies full access to manpower and resources, • needed time for series test not clear • Preliminary user manual available : • https://www.desy.de/~sefkow/HCALelectronics.html Mathias Reinecke HCAL – Technical Meeting 10

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