Log entry time 20:57:26 on January 23, 2011

Entry number 216247

Followups:

• 216260 01/23/11 21:29 Pitt Hall B off during low current calibration run

This is the log file to accompany the low current BCM calibration.  This corresponds to run number 9382 in the Qweak DAQ (running in parity mode at 1 Hz fake MPS) and run number 696 for the Moller (the polarimeter, not the experiment!)


Low current beam calibration Green Monster Log

We requested slow orbit lock off, since it may not behave well at some of the low beam currents.

Before and after each current setting we will do a Faraday cup measurement.  The list below shows the
Faraday cup reading before and after.

Interleaved between the Faraday cup readings will be the Green Monster Setpoint corresponding to that reading:
Partway through, I remembered that I should insert a beam off period (while they had the Faraday cup in) between
each setting.


5.13 uA
1
5.12


3.05
2
3.05


1.06
3
1.06

0.92
4
0.92

0.70
5
0.699

6 = beam off

0.490
7
0.493

8 = beam off

0.320
9
0.321

10=off

0.186
11
0.185

12=off

0.089
13
0.090

beam blocked:  -0.0002 on Faraday cup