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Archived Messages for CLAS_PHOTON@cebaf.gov: Re: TDCs & Scalers from Sasha... Take care
Re: TDCs & Scalers from Sasha... Take care
Elton Smith (elton@jlab.org)
Tue, 07 Apr 1998 12:09:16 -0400 (EDT)
> Date: Mon, 6 Apr 1998 20:29:53 -0400
> From: Luc Murphy <murphyl@cebaf.gov>
> Subject: TDCs & Scalers from Sasha... Take care
> To: elton@cebaf.gov
> Mime-Version: 1.0
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> From philips@gwis2.circ.gwu.edu Mon Apr 6 20:25:09 EDT 1998
> Date: Mon, 6 Apr 1998 20:24:17 -0400 (EDT)
> From: Sasha A Philips <philips@gwis2.circ.gwu.edu>
> To: luc murphy <murphyl@cebaf.gov>, murphyl@erols.com
> Subject: TDCs & Scalers
> MIME-Version: 1.0
>
>
> Hi Luc, I just got done in the hall with checking the TDCs and the
> scalers. Here's what we found.
>
> For the TDCs the only one missing was 20L which turned out to be
> a bad BNC connnector right underneath the tagger. Mike put a new
> connector on and that fixed it.
>
> For the scalers I looked at the efficiency plots for run# 10238 from April
> 5th at 07:12 (the plots were in the logbook). From these plots it looked
> like the following channels had to be checked. I checked the signals all
> the way into the scaler itself.
>
> Raw Scalers: 20, 22, 50, 61.
> - All were fine (this is after fixing
> the BNC problem with 20 of course).
>
> Gates 1 & 2: 20, 55.
> - 20 fine. However, I noticed that I got a wierd looking
> signal going into the scaler for 22, and nothing for 24, 26,
> 28, 30 & 32. These channels weren't a problem in the
> efficiency plots, so what's the deal? Something recent?
> Anyway, those channels should be read out again to double
> check. 55 has a signal into the scaler, but it's quite
> infrequent compared with it's neighbors.
>
> Gates 3 & 4: 20, 23, 50, 56, 61.
> - All were fine.
>
> Later,
>
> Sasha.
>
>
>
>
>
>
> *** PLEASE NOTE ***
>
> You can now also use philips@gwu.edu for my email.
> Thanks, Sasha.
>
> *****************
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~ Sasha Philips ~
> ~ ~
> ~ * The George Washington University : (202)994-8228 ~
> ~ * Thomas Jefferson National Accelerator Facility : (757)269-5310 ~
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
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