Re: So we need an access? Re: [Fwd: Changes to TOF TCD? ]

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From: W.J. Llope (llope_at_physics.rice.edu)
Date: Tue Mar 18 2003 - 11:10:49 EST

hello bill ch - yes - we noticed that the test run last night failed....
thanks for the add'l test this morning.
frank is coordinating with jamie at the moment.... his latest comments:

>I just talked to Jamie and will run another test run w/ all debug
>levels on again. If the log files show the same problems like last
>week, nothing changed and I can not do much remotely anymore (but i
>am still convinced it is related to our whatever the Bira thinks the
>TCD sends to it)
>more later ...

we'll keep you informed on what we learn... thanks,
        bill

At 10:53 AM -0500 3/18/03, Bill Christie wrote:
>Bill, Geary, and Frank,
> It appears that whatever the problem is with the TOF busy, it is
>still with us. Dan experienced trouble with a pedestal run overnight
>(see shift log) where it appears that the TOF was the cause. Tonko
>checked this morning, by running a pedestal run with the TPC and the
>TOF, and observed that the TOF busy got stuck on after about 5 kevts.
> Any other ideas on what can be tried? I'm hoping to find out
>within the next hour whether of not there will be some access to the
>WAH tomorrow (Wednesday). I'll send an E-mail to STAROPS as soon as
>I find out one way or the other.
> Greetings from Long Island,
> Bill
>
>Frank Geurts wrote:
>
>>
>>Fred, I think the busy is only part of the problem in fact it's the
>>part that is seen by STAR DAQ... what we see on TOF DAQ's side is
>>that the TCD words "trigger" our DAQ constantly at some point (the
>>Bira fires LAMs all over the place). I agree that a loose
>>connection of the rear connector may well be the reason why we see
>>it happen after some random number of events ...
>>
>> Eleanor, is there a chance for a quick access during which the TCD
>>connections can be checked?
>>
>>
>>thanks,
>> Frank
>>
>>
>>
>>
>>fred bieser wrote:
>>
>>>Te TOF's TCD has NO internal logic to generate busy except as brought in
>>>thru the front-panel LEMO labelled "DAQ Live." All the recent activity
>>>in that area might have left some cable loose or dropped or ???? either
>>>at the front or, more likely, in the rear.
>>>
>>>fred 

-- 

  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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