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Re: Status report - BCAL time difference resolution
On Mon, 25 Feb 2008, Alex Dzierba wrote:
Dear Alex,
absolutely true that the energy weighting improves things.
Actually what is the chi^2 / nfd for the fits. Because that should tell us
what is the best fit.
cheers elke
>
> Hi Elke
>
> That's a good question. First of all - I really have not
> studied the stability of the fits -- in other words, what
> happens to the floor term when you start the fit with
> different initial guesses - so the differences in the
> floor terms may be an artifact. The graph does show
> the importance of doing weighting over the cluster. I will
> continue looking at this and the mean time as well.
>
> Cheers
> Alex
>
> At 11:11 AM -0500 2/25/08, Elke-Caroline Aschenauer wrote:
> >On Mon, 25 Feb 2008, Alex Dzierba wrote:
> >
> >Dear Alex,
> >
> >thanks a lot for the report. I have a small question. I totally understand
> >your argument for cell 9, but is there and explanation why the floor terms
> >for cell 7 and 8 are so different. the energy dependent term so is very
> >similiar.
> >
> >David, do we know what changed in the reprocessing of the data.
> >
> >cheers elke
> >
> >
> >>Date: Mon, 25 Feb 2008 10:24:50 -0500
> >>From: Alex Dzierba <dzierba@indiana.edu>
> >>To: halld-cal@jlab.org
> >>Subject: Status report - BCAL time difference resolution
> >>
> >>Dear All
> >>
> >>Attached is a work-in-progress report on understanding time
> >>difference resolutions for the BCAL beam test. This follows
> >>discussions with Stefano and Elton
> >>
> >>Alex
> >>--
> >>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >>Alex R. Dzierba
> >>Chancellor's Professor of Physics (Emeritus)
> >>Department of Physics / Indiana U / Bloomington IN 47405 / 812-855-9421
> >>JLab Visiting Fellow
> >>Jefferson Lab / 12000 Jefferson Ave / Newport News, VA 23606 / 757-269-7577
> >>Home Phone: 812-825-4063 Cell: 812-327-1881 Fax: 866-541-1263
> >>http://www.dzre.com/alex
> >>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> >( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
> > ) `\ -
> >/ '. | +
> >| `, Elke-Caroline Aschenauer =
> > \,_ `-/ -
> > ,&&&&&V Jefferson Lab +
> >,&&&&&&&&: HALL-D 12C / F381 121-A Atlantic Avenue =
> >,&&&&&&&&&&; Suite 8 Hampton, VA 23664 -
> >| |&&&&&&&;\ 12000 Jefferson Ave +
> >| | :_) _ Newport News, VA 23606 Tel.: 001-757-224-1216 =
> >| | ;--' | Mail: elke@jlab.org Mobil: 001-757-256-5224 -
> >'--' `-.--. | +
> > \_ | |---' Tel.: 001-757-269-5352 =
> > `-._\__/ Fax.: 001-757-269-6331 -
> > +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Alex R. Dzierba
> Chancellor's Professor of Physics (Emeritus)
> Department of Physics / Indiana U / Bloomington IN 47405 / 812-855-9421
> JLab Visiting Fellow
> Jefferson Lab / 12000 Jefferson Ave / Newport News, VA 23606 / 757-269-7577
> Home Phone: 812-825-4063 Cell: 812-327-1881 Fax: 866-541-1263
> http://www.dzre.com/alex
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
) `\ -
/ '. | +
| `, Elke-Caroline Aschenauer =
\,_ `-/ -
,&&&&&V Jefferson Lab +
,&&&&&&&&: HALL-D 12C / F381 121-A Atlantic Avenue =
,&&&&&&&&&&; Suite 8 Hampton, VA 23664 -
| |&&&&&&&;\ 12000 Jefferson Ave +
| | :_) _ Newport News, VA 23606 Tel.: 001-757-224-1216 =
| | ;--' | Mail: elke@jlab.org Mobil: 001-757-256-5224 -
'--' `-.--. | +
\_ | |---' Tel.: 001-757-269-5352 =
`-._\__/ Fax.: 001-757-269-6331 -
+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+