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    User name Nanda

    Log entry time 22:04:37 on March23,2005

    Entry number 142266

    keyword=Compton Rates

    Counting rates in the Compton detectors after chicane tune:

    Photon rate: saturation
    Electron rate: 250 kHz/uA

    Both rates should be well below 1 kHz. Beam steering and focusssing in the compton chicane didn't make appreciable difference in background rates. The injector tune or linac path lengths might be
    off. MCC is working on minimizing the background rates.