User name R. Michaels
Log entry time 21:19:49 on March 04, 2006
Entry number 165213
This entry is a followup to: 165210
keyword=Results of Qasy (except event analysis)Here are more accurate results of the Qasy "sign check" except
for the event analysis which will take longer, and Sergey is
working on it. Expect +/- 500 ppm error from the 4M events we took.
- Moller result = -1734 +/- 7 ppm
- GeN Scalers (attach. 1) = +1611 +/- 90 ppm. Beam trips not well treated (makes tails).
- HAPPEX result (attach. 2) = +2570 +/- 500 ppm (error is the observed RMS of 3 monitors, there must be some wrong pedestals, note the beam current was very low).
- Compton charge asy (attach. 3) for L-R : +1670 +/- 7 ppm
Compton charge asymmetry had low bit resolution due to the low beam
current. But anyway, the sign is unambiguous.
A copy of this log entry has been emailed to: jones@jlab.org,bogdanw@jlab.org
Figure 1
Figure 2
Figure 3
