From: Geary Eppley (eppley_at_physics.rice.edu)
Date: Mon Apr 21 2003 - 14:26:54 EDT
Hi Bill,
I did not move cable B38, just cable 38 which is the second output of the
discriminator and the input to the TOFr 70 (now 69) channel trigger "or".
I was only "in" for 5 minutes. B38 was not disconnected for the dAu
run. What did the daq rate look like for this channel.
Geary
On Mon, 21 Apr 2003, W.J. Llope wrote:
> sounds good... BTW to where did you move the in and out cabling for
> this disc ch?
> did you just move it, e.g., down one ch of the disc? or did you move
> it, e.g., down one ch of the disc and also move the chs below
> this one down one too?
>
> i.e. neighboring PS706 chs have a small amount of timing cross-talk -
> we want an open ch in between...
>
> not a big deal - i just wanted to chekc...... thanks
>
>
> At 6:37 PM -0500 4/20/03, Geary Eppley wrote:
> >Hi,
> >
> >We had sort controlled access around 1730 when I conveniently happened to
> >be visiting STAR. I put my finger on cable 38 at the discriminator and the
> >noise stopped. I removed the cable. The noise rate dropped from 300 kHz to
> >zero. The TOFr HV was off at the time, So cable 38 is a bad discriminator
> >output, not a hot TOFr channels.
> >
> >Hope nothing else is hot when we turn on HV tonight but we have never had
> >a hot channels so it should be fine.
> >
> >Geary
>
>
> --
>
> 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
> 6100 S. Main St.
> Houston, TX 77005-1892
> e-mail: llope_at_physics.rice.edu
> WWW home: http://wjllope.rice.edu/default.html
>
> --
>
>
This archive was generated by hypermail 2.1.4 : Thu Jul 24 2003 - 00:39:40 EDT