Re: Wrong field for run 5701

From: Flemming Videbaek (videbaek@sgs1.hirg.bnl.gov)
Date: Wed May 01 2002 - 09:04:58 EDT

  • Next message: Christian Holm Christensen: "Re: DC stuff again"

    Hi Claus,
    
    If you read the logbook - yes it can be useful - you would see a remark on
    page 108 book 10
    "also in Daq D2 current was set to 380. Read Value is 280 == 1/10"
    So the field was 1/10 but is wrong in the DB i.e. it should be corrected to
    281
    as the other subsequent runs.
    
    Message like this should go to the list, and Betty can update the fields in
    the run database, but please make it more specific e.g. if you know what the
    correction should be e.g.
    change D2 current field to 281 from 380 for run 5701.
    
    Thanks for finding the problem
    but do also go through the logbook for runs that are being analyzed to
    ensure
    they at least at the time of the run were deemed to be good.
    
    
    
    ------------------------------------------------------
    Flemming Videbaek
    Physics Department
    Brookhaven National Laboratory
    
    tlf: 631-344-4106
    fax 631-344-1334
    e-mail: videbaek@bnl.gov
    ----- Original Message -----
    From: "Claus O. E. Jorgensen" <ekman@nbi.dk>
    To: "brahms-dev" <brahms-dev-l@bnl.gov>
    Sent: Wednesday, May 01, 2002 8:35 AM
    Subject: Wrong field for run 5701
    
    
    >
    > Hi
    >
    > I discovered what I think is a mistake in the database and I was wondering
    > where to report it - is this the right place?
    >
    > The magnetic field in the DB for run 5701 is wrong. It says 1/10 field,
    > but I suspect it's 1/8. If I compare to other 1/10 field runs the momentum
    > distribution has a higher mean
    > (see http://www.nbi.dk/~ekman/momentumcheck.eps).
    >
    > Who can correct it and where should reports like this go?
    >
    > Claus
    >
    > +-------------------------------------------------------------+
    > | Claus Jørgensen                                             |
    > | Cand. Scient.                  Phone  : (+45) 33 32 49 49   |
    > |                                Cell   : (+45) 27 28 49 49   |
    > | Niels Bohr Institute, Ta-2,    Office : (+45) 35 32 53 07   |
    > | Blegdamsvej 17, DK-2100,       E-mail : ekman@nbi.dk        |
    > | University of Copenhagen       Home   : www.nbi.dk/~ekman/  |
    > +-------------------------------------------------------------+
    >
    



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