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    User name jie

    Log entry time 12:28:13 on April 6,2012

    Entry number 370726

    keyword=[target] Magnet quench: email from Donald G. Crabb


    Hi Jixie,
    I would like to comment on the magnet quench. As far as I can tell from the Alog
    this might well have been a beam induced quench as the Moller measurement was
    going on at the time(true?) . In an experiment at BNL some years ago we had a
    problem with beam induced magnet quenches and we found, the hard way, that after
    reaching field and going into persistent mode we had to wait about 4 hours before
    bringing beam on again. There was good statistics as there were more than 40 beam
    induced quenches during the experiment
    I strongly advise that you wait the same amount of time now.


    I already mentioned this to Chris, but talk it over with others or contact me if
    you want further details.

    Best,

    Don