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User name LeRose
Log entry time 17:30:44 on May 09, 2008
Entry number 237850
This entry is a followup to: 237849
keyword=Left Arm Dipole NMR studies Probe A vs Probe D
By averaging the magnet current readouts and Hall probe readouts during
the periods I was testing the NMR's when there was stable field (5
minutes or longer with readouts every 3 seconds) with each NMR probe
while P0 was set to 1 GeV/c I come to the following conclusion.
Using probe D instead of probe A at 1 GeV/c introduces an offset from the
calibrated P0 one expects from probe A of 107keV/c +-110keV/c. That is
the actual magnetic field at the set P0 is 1.07E-04 higher than it would
be for the same P0 setting with probe A.
The numbers are similar for probes B and E compared to A.
A copy of this log entry has been emailed to: gomez@jlab.org