Re: many, many TOFr trips

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From: W.J. Llope (llope_at_physics.rice.edu)
Date: Fri Mar 21 2003 - 12:07:18 EST

attached are two PDFs from the rich scalers. TOFr seems to
be tripping "for no reason".... (hence frank's reboot/reramp)....

red is pVPD .and. rate (Hz)
green if TOFr singles (Hz)

picture 5 shows full range (these are perfectly normal
spills and single rates)
picture 7 is the same but w/ an expanded Y-axis

i.e. these trips happen both w/ and w/out beam in the ring.
also the currents are at perfectly normal values ~1 minute
before each trip....

it's always HVA- that's going here...
regards...

At 11:00 AM -0600 3/21/03, Frank Geurts wrote:
>CAEN power supply is rebooted, HV is ramping up again. Jamie'll
>start the next run after the ramping has finished.
>
>
>Frank Geurts wrote:
>>TOFr seems to be tripping *a lot* in recent days: since Wed-morning
>>i have counted 68 so far ...although a fair number can be explained
>>by all kinds of beam related issues (Vernier scans,
>>controller/uncontrolled beam dumps) it still remains to be too
>>many. I have asked Jamie to recheck pressure on the bottles but no
>>gas alarm would indicate business-as-usual ...
>>
>>more later
>>
>>-f. 

-- 

  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
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  Houston, TX 77005-1892            
             e-mail:     llope_at_physics.rice.edu
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