Re: TOFr:alarm on HV

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From: Frank Geurts (geurts_at_rice.edu)
Date: Mon Mar 17 2003 - 18:37:34 EST

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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