Make New Entry, Make Followup Entry
User name O.Glamazdin
Log entry time 23:06:15 on October 15, 2010
Entry number 335034
keyword=Moller measurements resultMoller results on October 15, 15:00 - 22:30
- Crew: Jixie, Roman, Sasha, Ahmed
- Wien filter angle is 29.2°
- The raster was ON 4.1*3MCC units.
- The half wave plate was OUT.
- Old DAQ calorimeter threshold was 260mV.
- Old DAQ aperture delays were 22nsec.
- Beam was straight.
- Helicity frequency: 943.4Hz, pattern: quartet, delay: 8 windows.
- Hall A energy lock was used. Beam energy was very stable.
- 20:20 Moller magnet quentch when we change 'persistent' mode to 'standby'
| # | Wien angle | beam | runs | target | Pbeam% | comments |
|---|---|---|---|---|---|---|
| 1 | 29.2° | 3.0 µA | 14845-14851 | 1 | 78.12±0.28 | +3.9T |
| 2 | 29.2° | 3.0 µA | 14852-14855 | 2 | 77.85±0.20 | +3.9T |
| 3 | 29.2° | 3.0 µA | 14856-14859 | 3 | 78.12±0.22 | +3.9T |
| 4 | 29.2° | 1.35 µA | 14860-14863 | 4 | 78.17±0.21 | +3.9T |
| 5 | 29.2° | 3.0 µA | 14864-14865 | 2 | 78.48±0.31 | +3.9T |
| Average 2 | 29.2° | 3.0 µA | - | 2 | 78.02±0.17 | +3.9T |
| 6 | 29.2° | 3.0 µA | 14866-14869 | 3 | 78.25±0.17 | +3.75T |
| 7 | 29.2° | 3.0 µA | 14870-14873 | 3 | 78.52±0.20 | +3.5T |
| 8 | 29.2° | 3.0 µA | 14874-14877 | 3 | 77.96±0.20 | +3.25T |
| 9 | 29.2° | 3.0 µA | 14878-14881 | 3 | 77.53±0.20 | +3T after quench 0->3T |
| 10 | 29.2° | 3.0 µA | 14882-14885 | 3 | 77.86±0.21 | 3T->3.9->3T |
| 11 | 29.2° | 3.0 µA | 14886-14889 | 4 | 77.19±0.20 | +2.57T |
| Average | 29.2° | - | 14845-14856 | 1-4 | 78.09±0.11 | - |
A copy of this log entry has been emailed to: gen@jlab.org
Figure 1 Moller result
