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User name Humensky
Log entry time 03:28:38 on June26,2004
Entry number 126910
keyword=Raised LUMI voltages
Run 2421 was a short production run during which I raised the LUMI voltages so that they are mostly around 40-42k ADC counts. We were at 30uA while I was doing this, so I wanted to leave a little overhead in case the beam current rises (ie, if Hall C goes off or following a spot move).
Old HV New HV (these are setpoints, not readback values)
Ch 0 425 450
1 850 850
2 475 495
3 425 450
4 480 510
5 400 430
6 425 450
7 425 430
8 525 555
9 625 635
All values negative of course. I left BLUMI2 at 850 since it's already so much higher in voltage than the others -- it's around 22k ADC counts.