April 20, 2011 online meeting minutes

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present: Sergey Boyarinov, Sergey Pozdnyakov, Eugene Pasyuk, Nerses

CLAS/CLAS12

1. dsc2 (JLAB discriminators) may need new firmware to implement:

  • optimize 2eSST readout
  • be able to program input so board can work as latch, similar to struck7201; need to increase event buffer size
  • something else may come up during testing

May need EPICS driver. Tests are in progress.

2. VME controllers: Centos5, 2 boards tested, CAEN TDC readout is almost ready

3. External clock board for TDC fanout will be designed and produced by William from Fast Electronics Group

4. Polar crate is under testing to make sure we can run at 1000Hz helicity flips without loosing sequence as it was observed before at higher event rate; mv2432 CPU was replaced with mv5100 with prpmc880, need to replace VME crate to be able to recycle power remotely (needed by prpmc880); will run more tests to make sure we are not limited by polar

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