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    User name J. Singh

    Log entry time 03:01:37 on August 4,2003

    Entry number 108832

    Followups:

    keyword=curiosity in begin / end of run summary

    it seems that some EPICS variables recorded in the run summaries differ between the beginning and the end. my best guess is that the following happens:

    (1) the last run of a particular config ends
    (2) the config is changed to the next setting
    (3) the end of run summary script is still running during the config change
    (4) the end of run summary, therefore, logs the EPICS variable value from during the config change and NOT from during the run

    it is my belief that this was the situation that occured when the BHWP was changed 5 out of the last 10 times.

    see for example the following runs:
    begin end

    3098 3098

    3106 3106

    3117 3117

    3136 3136

    3186 3186

    it is not clear to me what can be done to fix this. luckily, there is a lot of redundancy when it comes to this stuff. i have rechecked the BHWP orientation for the elastic running @ 2.8 GeV/ 6 deg. i believe what's listed in the run summary is accurate.

    (incidentally, Vince has noticed that sometimes the end of run summaries also indicate that the lasers are off when they are on.)