User name E.Chudakov
Log entry time 23:32:55 on April 11, 2008
Entry number 231453
keyword=Moller resultsResults
Beam polarization: -66.1+/-0.1(stat)+/-1.7%, measured on 4 targets, chi2=60/(11 ndf)Details
Both the ADC and VtoF readouts for the target position encoder do not work. The EPICS variable is changing properly.We used 4 targets. The target #5 was measured in 2 points. The target #3 was measured at 2 different currents.
HV: -1715.0 -1880.0 -2140.0 -2010.0 -1790.0 -1760.0 -1865.0 -1960.0 -1900.0 -1850.0
Results
| Target | Encoders (EPICS) | Beam | Runs | Target | Beam | ||
|---|---|---|---|---|---|---|---|
| X | Y | μA | P | P | χ² | ||
| 5 | 1.040 | 1.387 | 0.55μA | 12705-12706 | 7.97% | -66.2+/-0.3% | 0.5 / 1 |
| 5 | 1.020 | 1.387 | 0.55μA | 12707-12708 | 7.97% | -66.9+/-0.3% | 0.5 / 1 |
| 4 | 1.660 | 1.387 | 0.55μA | 12709-12710 | 7.44% | -68.2+/-0.3% | 0.3 / 1 |
| 3 | 2.310 | 1.387 | 0.55μA | 12711-12712 | 7.62% | -65.8+/-0.3% | 0.3 / 1 |
| 3 | 2.310 | 1.387 | 0.30μA | 12713-12714 | 7.62% | -65.8+/-0.3% | 18 / 1 |
| 2 | 2.930 | 1.387 | 0.30μA | 12715-12716 | 8.21% | -66.1+/-0.3% | 2 / 1 |
| average | 12705-12716 | -66.1+/-0.1% | 60 / 11 | ||||
A copy of this log entry has been emailed to: gorbenko@jlab.org, glamazdi@jlab.org, romanip@jlab.org
Figure 1
