From: Frank Geurts (geurts_at_rice.edu)
Date: Tue Mar 18 2003 - 13:48:36 EST
see http://duvel.rice.edu/~geurts/tofr/hvtrips030318.jpg ...
(0=A-, 1=A+, 2=B-, 3=B+)
Frank Geurts wrote:
> You are correct ... in fact it is has been tripping 14(!!!) times now
> basically every 20-30min. This is a problem however after talking to Dan
> Cebra (current shift leader) it turned out that RHIC is loosing its beam
> during ramps with about that same frequency triggering all kinds of
> radiation monitors. I'll keep an eye on it for the next hour or so.
>
> -frank
>
>
>
>
> aya wrote:
>
>> Hi Frank,
>> There is NO beam for now (both yellow and blue) but it seems to that
>> RHiC is having "corrector/power supply and magnet problem" as the RHIC
>> monitor says...
>> and I think it actually tripped 3 times in this 30 min.
>>
>> Aya
>>
>>
>> On Mon, 17 Mar 2003, Frank Geurts wrote:
>>
>>
>>> Aya, what you just witnessed was a TOFr HV trip and the auto-ramp
>>> phase afterwards. Typically the auto-ramp takes ~10minutes.
>>> However, i see that the HVA+ tripped twice in 30minutes ... how are
>>> the beam conditions right now?
>>>
>>> -frank
>>>
>>>
>>>
>>>
>>> aya wrote:
>>>
>>>> Hi TOF experts,
>>>>
>>>> I'm a detector operator now and there was a yellow alarm on
>>>> TOFr:Iread_1
>>>> When I checked it, the HV A+ Read was ~ 6 for 2,3 min and then go
>>>> back to ~6990 at the same time Iread reads 410 and causing alarm.
>>>>
>>>> Is there any procedure for it? or just watching it as long as it is
>>>> short (please let me know about how long)??
>>>>
>>>> Thanks,
>>>>
>>>> Aya Ishihara
>>>> Dept. of Physics, UT, Austin
>>>> e-mail:aya_at_physics.utexas.e
>>>
>>>
>>
>>
>
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