Re: TOFr:alarm on HV

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From: aya (aya_at_physics.utexas.edu)
Date: Mon Mar 17 2003 - 18:54:53 EST

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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