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Re: Status report - BCAL time difference resolution



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
>>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
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>|       `,              Elke-Caroline Aschenauer            =
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~