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User name garrow
Log entry time 05:14:31 on July 14,2000
Entry number 26809
This entry is a followup to: 26808
keyword=bpm positions
The new positions for 3H00A and 3H00C are
3H00A
x = 0.0 and y = -1.7
3H00C
x = 1.0 and y = -3.0
These were determined from sieve runs so that ytarget was zero
xptar offset was minimized (since we believe that the hms is 1mm
off the beam line) yptar was zero and focal plane distributions were
what was expected. xptar is about 1millirad off This correponds to a
slight offset in xbeam with repect to the midplane of the spectrometer.
The offfset in x is about .5 mm which correponds to a momentum offset
of ~4.0 10-4. This was decided to be adequate running conditions.
See 26808 entry for the sieve slit distributions.