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    User name jpchen/yiqiang

    Log entry time 16:12:36 on February 06, 2009

    Entry number 259271

    keyword=pressure gauge/cooling jet flow

    We calibrated the pressure gauge and vacuum gauge for the reference cell system. Zeroed the vacuum and set pressure gauge to -15 psig (both CH and hall) when the local vacuum gauge reading 7 mtorr. Then put in 1 atm N2 and checked that the pressure gauge read 0 psig and vacuum read 773/774 torr.

    Requested Cryo group to turn on He supply and check our cooling jet for the target cell windows are set at 40 and the flow to the beam Be window at 2.5.