Make New Entry, Make Followup Entry
User name V. Sulkosky
Log entry time 17:50:47 on November 08, 2008
Entry number 247626
This entry is a followup to: 247615
keyword=BPM CalibrationI have completed the BPM calibration after the work yesterday on the ADC
gate adjustment and attenuator settings.
Here are the new BPM calibration constants:
BPMA constants:
-0.741679 0.779151 0.74142 0.710677 -0.000360192 0.000996476
BPMB constants:
-0.676666 0.753719 0.701437 0.67405 -0.000975045 0.00209868
I have already updated the relevant database for Transversity. I will
also update the database used for spot++.
Figure 1 shows the calibration plots and the agreement after calibration
with the beam position from the harps.
For the Harp A X position, I used my fit to the older data, since the
position from this harp indicates there is an offset of 1 mm compared to
the EPICS readout. Until the Harp is resurveyed, I do not trust the
positions.
A copy of this log entry has been emailed to: camsonne,brads,jpchen,jiang
Figure 1
