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    User name R. Michaels

    Log entry time 09:56:12 on April25,2009

    Entry number 268288

    keyword=L-HRS end-run failure, no pool buf, FIXED

    Sometimes the L-HRS DAQ fails in end-of-run and says it cannot
    talk to TS11. Looking at the TS11 vxWorks login I see messages
    listed at the end of this log entry. The messages should never
    happen and indicate one of two bad things:

    1. Corruption of memory in the TS11 crate (e.g. index out
    of range).

    2. Crate ROC mask wrong in the Trigger Supervisor.

    Problem 1 is very unlikely because the CRL code was compiled
    on Sept 18, 2008 and ran fine for a long time.

    Problem 2 appears to be the problem ! I changed
    ~a-onl/bbite/crl/ts_scaler.crl to get the correct
    hardware roc number which is 6 unless someone changed
    the jumper. See my comments there. This was a change
    for this experiment: the crate is on branch 4, etc.

    Started a run 1423. So far so good, but the problem
    might only show up with high rates (e.g. beam).

    Here were the error messages on TS11 crate:

    interrupt: TRIG ERROR: no pool buffer
    available
    interrupt: TRIG ERROR: no pool buffer
    available

    (repeated dozens of time)