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SBS / A1n DAQ

SBS / A1n DAQ. Alexandre Camsonne 02/27/2013. APV25. Standard VME access ok : can configure board Check address assignment in VME64X crate Need to debug data transfer and try block transfer. Calorimeter.

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SBS / A1n DAQ

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  1. SBS / A1n DAQ Alexandre Camsonne 02/27/2013

  2. APV25 • Standard VME access ok : can configure board • Check address assignment in VME64X crate • Need to debug data transfer and try block transfer

  3. Calorimeter • cnugep and srcdaq configured on 36 subnetwork ( gave up with computer center to run on 88 subnetwork ) • Using VME crate and one V792 for calorimeter • Working on 1881 readout in case more channels needed

  4. Fastbus • 2 New TI borrowed from electronics group • Old backplane TI not working, need to test them • Readout of Fastbus in new TI(Sergey’s slide) • Test event blocking : should improve about 30 %, need to work on new decoder : most likely ok to reach 10 KHz for A1n with 6 crates • Need check board flipping for SBS ( 100 KHz L1/Fastclear and 3 KHz L2 ) • Might get SFI and power supply from Bates

  5. DAQ schemes 2 x electronics Split signals between the two • 2 independent DAQ in parallel • Pro : standard CODA, no synch issue • Con : need twice more APV VME boards and need to split signal between the two APV signal Fastbus signal Fastbus Fastbus APV APV

  6. DAQ schemes • 1 DAQ, several Fastbus crates • Pro : standard CODA, no synch issue • Con : limited by front end busy when data transfer becomes negligible Scatter channels To reduce readout deadtime APV Fastbus Fastbus Fastbus Fastbus Fastbus Fastbus

  7. DAQ scheme • 1 DAQ, several Fastbus crates • Pro : Reduced front end dead time, only need Fastbus modules, splitting easy if use MQT by daisy chaining • Con : Synchronization between boards need to be checked N x Fastbus electronics Split signals between the N Read 1 / N board for each trigger APV Fastbus Fastbus Fastbus Fastbus Fastbus Fastbus

  8. MQT • Vicor power supply adapted • Test without 8 V supply • Works but noisy : electronics group will check it • Need to make batch panel for input signals

  9. Task list • Fastbus inventory and test ( Sergey ) • SFI, GAC, ATC, 1881, 1877S, TI • Test Fastbus buffering, event blocking and multicrate with new TI ( Sergey / Alexandre ) • Module flipping ( Sergey / Alexandre ) • Implement scaler crate and do deadtime measurement ( Alexandre ) • APV work with Evaristo DAQ and test with CODA ( Alexandre ) • MQT ( Electronics group )

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