User name horn
Log entry time 13:37:42 on September 15,2003
Entry number 372
Followups:
- 373 09/15/03 13:53 horn beam positions
- 375 09/15/03 16:09 horn hsxpfp correction factor
- 378 09/23/03 14:34 horn Plots of dW vs. delta and p_HMS
Invariant mass offsets including hsxpfp correlation correction factor and vertical beam position offset. Comparing the BPM readout for 3H00C from EPICS to the nominal beam positions , an offset of approximately 0.4 mm at beam energy 5.246 GeV can be observed. For consistency with the remaining data the only run taken at the nominal beam energy (47339) was "corrected" as illustrated in the plot below.
Run E_beam p_0 theta delta W dW
47028 4.210 -3.834 12.00 0 935.75 -2.520
47031 4.210 -3.587 16.00 0 937.82 -0.452
47033 4.210 -3.313 19.99 0 939.01 +0.738
47040 4.210 -3.033 24.00 0 938.60 +0.328
47042 4.210 -2.760 28.00 0 939.41 +1.138
47339 5.246 -4.5003 12.00 +4 937.39 -0.882
47345 5.246 -4.5003 14.00 0 938.21 -0.062
47346 5.246 -4.5003 15.99 -2 939.99 +1.718
47347 5.246 -4.5003 19.985 +4 938.73 +0.458
47350 5.246 -3.7292 22.00 0 939.30 +1.028
47353 5.246 -3.7292 23.78 -2 939.25 +0.978
47540 3.778 -3.370 12.00 +4 935.90 -2.372
47544 3.778 -3.370 14.01 0 936.01 -2.262
47545 3.778 -3.370 16.00 -2 935.64 -2.632
47548 3.778 -2.565 26.20 +2 938.43 +0.158
47550 3.778 -2.565 28.00 0 937.36 -0.912
47656 4.709 -4.093 12.205 +4 935.97 -2.302
47663 4.709 -4.093 14.00 0 937.03 -1.242
47667 4.709 -4.093 15.80 -2 938.50 +0.228
47673 4.709 -3.281 22.20 +2 939.26 +0.988
47674 4.709 -3.281 24.00 0 938.60 +0.328
47677 4.709 -3.281 25.80 -2 939.57 +1.298
FIGURE 1
