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    User name jpchen

    Log entry time 18:37:29 on February22,2011

    Entry number 348140

    keyword=cryotargte back to operation mode with limited power for LD2

    ESR has been stable for a while now.
    Set cryotargte back to operational condition for LD2:
    LD2 (loop1) at 22K, 21 psi, fan=48Hz, HP=~100watts,
    LH2 (loop2) in rest mode: 19K, 31 psi, fan=24 Hz, HP=30 watts.
    15K flow=15 g/s.
    Without CHL supplement, 15 K supply temperatue increased from 13.5 to ~16K. With Hall C still take 35 g/s, we are at the limit.
    This will limit us to have 100 watts in LD2, which only allows to run ~15 uA on 15 cm cell.
    Need closely watching the cryo supply temrature, if it continously increases, we (A or C) will need to lower the heat load.