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    User name Moffit

    Log entry time 05:42:56 on April16,2008

    Entry number 232298

    keyword=ROC9 crashes...

    I believe that the ROC9 crashes are related to the chamber rate... or perhaps better... tdc rate. Seems as if the event buffer of the ROC is being over filled causing the Data exception errors that were observed just after starting a run.

    We decreased the beam current to 1µA and took another run. ROC9 seems to be handling this just fine.