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    User name A. Camsonne

    Log entry time 04:50:53 on October 31, 2008

    Entry number 245688

    keyword=RICH check / work during access, dead time check

    -plugged grid plane -added fast clear to reset Track and Hold and checked it did not affect the pedestals -checked RICH electronics triggering logic -looked at the deadtime in trigger routine using TIR and scope, most events are 5 ms hence high dead time at around 200 Hz, need to check if most of those long event are normal ie big event where DMA will help or timeout events which can be reduced by different logic and optimizing the polling time. - quick try of DMA readout

    I will try a different way to poll out the modules to make and finish the DMA transfer to make the transfer more efficient. So for now the configuration without RICH will be used if deadtime is an issue. We will take a few dedicated runs from time to time to check out RICH and test improved read-out.