Re: TOFr:alarm on HV

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From: Geary Eppley (eppley_at_physics.rice.edu)
Date: Mon Mar 17 2003 - 18:34:12 EST

Hi Aya,

Sounds like RHIC was trying to fill the beam and lost it. TOF HV stays on
and is subject to trips when this happens. The TOF HV automatically ramps
up again after a few minutes. If this continues for 10-15 minutes you
should let us know by email but you don't have to do anything else.

Regards,

Geary

On Mon, 17 Mar 2003, 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.edu
>
>

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