From: Geary Eppley (eppley_at_physics.rice.edu)
Date: Wed Mar 26 2003 - 10:48:13 EST
Hi,
The HV was shut down for 45 minutes during "gas maintenance".
I kind of like the ramp the way it is now. It is interesting to see
that the current during the ramp is almost exactly linear with the ramp
rate. HVA+ which now ramps twice as fast as HVA- generates a maximum
current of 900 nA compared to 450 nA for HVA-.
HVB+ which now ramps half as fast as HVB- generates 250 nA compared to 500
nA for HVB-.
Geary
On Wed, 26 Mar 2003, W.J. Llope wrote:
>
> frank - where's the tofrhv.log data from before Tue Mar 25 14:53:00 2003?
>
> geary - did you turn off the tofr hv at Wed Mar 26 09:25:00 2003
> then turn it on again at Wed Mar 26 10:16:00 2003?
> or what happened there?
>
> another qquestion: i remember hearing that specific ramp
> parameters are set differently for busses A and B. (different
> trip limits too?). anyway, now that the cabling is swapped
> for the present test, do we not need to set those parameters
> as before to be consistent w/ the previous conditions?
>
> rgds
>
>
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