Re: TOFr noisy

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From: W.J. Llope (llope_at_physics.rice.edu)
Date: Tue Mar 04 2003 - 15:58:22 EST


hello zhangbu,
        first, let me ask that comments related to detailed
detector operations issues go to tofp_at_physics.rice.edu, not
startof-hn....
        on your question - i've been looking at the hit
patterns etc from yesterday and through the last weekend
and everthing looks o.k.....
i see the shift log notes a higher-than-normal background
rate for this spill - would that be enough to explain this?
thanks for the message,
        bill

At 3:30 PM -0500 3/4/03, Xu, Zhangbu wrote:
>Hi,
> The rich scaler indicates there is very high TOFr
>background rate. Is there anything firing randomly or
>we have hot channels?
>The data from CDB board shows that 50% of the events
>with pVPD coincidence have TOFr hits. It was ~10%.
>Thanks!
> Zhangbu
>
>
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W.J. Llope, Ph.D.                      Res. Assoc. Professor T.W. Bonner Nuclear Laboratory         phone: 713-348-4741 Rice University, MS-315                fax: 713-348-5215 6100 S. Main St.                   Houston, TX 77005-1892             e-mail: llope_at_physics.rice.edu WWW home:   http://wjllope.rice.edu/default.html

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