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Re: Minutes posted, calib goals requested



On Mon, 21 Apr 2008, Elton Smith wrote:

Dear all,

just to give a suggestion it would be very important to vary the light
intensity to test and monitor the linearity of the system.
In hermes we had a system stepping through 5 different light intensities.

cheers elke


> Date: Mon, 21 Apr 2008 12:14:54 -0400 (EDT)
> From: Elton Smith <elton@jlab.org>
> To: halld-cal@jlab.org
> Subject: Minutes posted, calib goals requested
>
>
> HI all,
>
> Zisis posted the minutes of today's meeting on the wiki. Thanks! I did add
> some comments at the end on questions of calibration.
>
> We need to clearly identify the goals of the calibration system, so that
> we build what we need. At the moment, the calibration system is geared
> toward gain monitoring of pmts. For the next meeting, we would like the
> Fcal and Bcal and other pmt-based systems to specify what needs to be
> monitored at to what accuracy. Pavlos suggested that it would also be
> useful to give an estimate of the signal size (e.g. number of
> photoelectrons) as well as wavelength response of the detector.
>
> Cheers, Elton.
>
>
>
> Elton Smith
> Jefferson Lab MS 12H5
> 12000 Jefferson Ave
> Suite # 16
> Newport News, VA 23606
> elton@jlab.org
> (757) 269-7625
> (757) 269-6331 fax
>

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