Re: TOFr trigger in pp run (data from last night)

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From: W.J. Llope (llope_at_physics.rice.edu)
Date: Tue Apr 22 2003 - 12:56:40 EDT


hi zhangbu....
i checked... TOFp and pVPD look fine... hit pattern is attached.

please note from this hit pattern that we appear to have lost
the last TOFr TDC. the ADC values for those same det chs
are O.K... --> suggest we simply replace this TDC... comments?

TOFr TDC dists look fine (and obviously centered
at relatively higher values w/ recent change of that
16ns lemo cable)...

except for that dead TDC, all looks o.k. to me.... rgds,
        bill

At 12:10 PM -0400 4/22/03, Xu, Zhangbu wrote:
>Hi,
> We took about 26K TOFr trigger events last night.
> run4111066, 4111067 and 4112004. The enhancement is
>about 300 (very close to our initial estimate).
>Lijuan did a quick check and it seems to work.
>Please have a look and see if pVPD and others work!
>I am trying to get Lidia to process them in the
>offline reconstruction so that we can check the vertex,
>TPC/TOFr matching. The db doesn't seem to get the field and
>beam energies right, there is not laser run before the run.
>
>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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