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    User name jroche

    Log entry time 02:17:16 on October14,2010

    Entry number 334774

    keyword=Compton rates got higher: aborted Compton data taking

    An hour agao or so, the compton rate went way up while MCC was performing a bcm calibration for hall C. After thsi exercise was done, the compton rate came back 35% higher (cavity off). I called Eric who advised me to simply abort compton data taking for tonight.
    Turn off the HV for the detector.

    Figure 1: zoomed on the "regular rates" to show the increase of rates before and after the MCC BCM calibration
    Figure 2: full screen to show the compton rates during the MCC BCM calibration.

    FIGURE 1

    FIGURE 2