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User name R. Michaels
Log entry time 23:30:59 on November 6,1998
Entry number 4750
This entry is a followup to: 4747
keyword=suggestions (BPM cal, pol sign)
Re: BPM calibration (since I was asked - log 4747) -- I suggest
to measure the BPM pedestals. If these, and the other
calibration coefficients, are used, the average BPM position
from "spot" would probably agree with MCC (per analysis
of L. Todor).
I notice (log 4738) polarization flip, I remind to note carefully
the state of half waveplate(s). Physics asymmetry SIGN is critical.