I guess either Michael's or Yuan's message or both explain it. I also
think it very likely that trigger 7 is not prescaled cos the data last
night resemble those couple runs last December fairly closely.
Chi
On Mon, 28 Feb 2005, Yuan Xiao wrote:
> > trigger 7, despite being prescaled by 1000, dominates.
>
> I don't know if this is true. Thought the prescale factor was set to 1000 as
> stated in elog during the beam tuning, it was changed back to 3 at the end of
> shift C to check its effect to singles trigger. I am not sure wheater Eugene or
> Michael changed it back to 1000 during data taking.
>
> Yuan
>
>
> >
> > On Sun, 27 Feb 2005, Michael Kohl wrote:
> >
> > > We are going to take data with zero BLAST field with ABS D2 (32deg).
> > > After end of run 13842, Larry Longcoy starts to tune the beam with BLAST
> > > off, at first with BQMs only. When BQMs are low, the Wch are turned on and
> > > the tune is refined with help of the Wch scalers. We will start at
> > > currents 50-100mA and see gradually how high we can get with regard to
> > > Wch tripping, Wch S/N and overall rates.
> > >
> > > Plan is to take zero-field data with ABS-D2 until Monday morning.
> > >
> > > Regards,
> > >
> > > Michael
> > >
> > >
> > >
> > >
> > > --
> > >
> > > +-------------------------------------+--------------------------+
> > > | Office: | Home: |
> > > |-------------------------------------|--------------------------|
> > > | Dr. Michael Kohl | Michael Kohl |
> > > | Laboratory for Nuclear Science | 5 Ibbetson Street |
> > > | MIT-Bates Linear Accelerator Center | Somerville, MA 02143 |
> > > | Middleton, MA 01949 | U.S.A. |
> > > | U.S.A. | |
> > > | - - - - - - - - - - - - | - - - - - - - - -|
> > > | Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de |
> > > | Work: +1-617-253-9207 | Home: +1-617-629-3147 |
> > > | Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 |
> > > | http://blast.lns.mit.edu | |
> > > +-------------------------------------+--------------------------+
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
>
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>
>
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