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    User name Moffit

    Log entry time 15:08:43 on April 24, 2009

    Entry number 267896

    keyword=We plan to change in timing of ROC9/ROC10 (BB MWDC)

    We have the trigger latch pattern plugged into ROC9. These signals are presently very close to the end of the TDC window (<200 channels).

    We plan to add ~500ns onto the common stop to the TDCs in ROC9 and ROC10. This will effectively change the timing offsets for the MWDC wires.

    To accommodate this change, we'll also need to change the TDC window size from what it is presently (~800ns to 1400ns).

    I have other things to take care of in the Hall during the controlled access... please email me (or page me) if you have comments on this change.

    It'd be nice if we had a free FASTBUS TDC to plug this trigger latch pattern into... but I'm getting no response to my pages to the MWDC expert.

    A copy of this log entry has been emailed to: brads, gjin, xqian