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User name E.Chudakov
Log entry time 14:39:14 on February 07, 2009
Entry number 259496
keyword=Moller resultsMoller results on Feb 07 12:15-13:55
E.Chudakov, A.GlamazdinTuning took about 2h00m.
- There was no energy lock..
- The raster was ON.
- For the beam energy and current - see the chart attached. The energy seems to have fluctuated, being about 2 MeV lower than the regular value.
| # | Wien angle | beam | runs | target | Ptarget% | Pbeam% | chi2 |
|---|---|---|---|---|---|---|---|
| 1 | 30° | 0.80 µA | 13131-13138 | 5 | 8.03 | -75.3±0.2±2.0 | 6.8 |
| 2 | 30° | 0.80 µA | 13139-13142 | 4 | 7.50 | -75.4±0.2±2.0 | 0.2 |
| 3 | 30° | 0.40 µA | 13143-13146 | 2 | 8.23 | -75.5±0.2±2.0 | 0.9 |
| average 1,2,3 | 30° | average the targets | -75.4±0.1±2.0 | 3.4 | |||
The energy measured (HALLA:p) fluctuated, mostly during the 1-st
measurement. The results with the target 5
more or less match this fluctuation. We are not sure how accurately the
energy is measured at 0.8 µA.
More studies are needed to extrapolate the polarization measured with no
energy lock to the polarization
during the regular runniing.
Figure 1
Figure 2
