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    User name Armstrong

    Log entry time 15:13:52 on August 6,2005

    Entry number 150957

    keyword=Target: refill from venting


    Jian-Ping arrives and he, Ramesh and I make a controlled
    access to refill the helium target.

    We bring down a new 4He gas bottle from the
    Hall A gas shed area. We fill the target, mainly from the
    previous bottle that was already connected. That one started
    at about 2000 psi, and was emptied completely into the
    target. We had one scare when the pressure in the cell dropped
    way down, as well as the cell temperature, and we thought had
    vented. We had not vented, we had just cooled down too much,
    and the pressure had dropped rapidly (we had not turned on
    the PID loop).

    We connected the new bottle, topped up the cell, and left
    the access. Total process took 1 hour 45 minutes or so.

    Call for beam again. Target cell at 6.7 K and 207 psi'
    with 22 g/s 4K from CHL, and fan speed at 70 Hz, and stable.