g-2 Beamline News - 28 April 1996
			(from Lee Roberts)


The EAG has now finished all work on the beamline.  There is still some work on
controls, etc.  We have planned to try to extract beam for the first time on
Thursday, 2 May.  If we are successful by Friday morning, we will continue to
run during the evening shift through the weekend.  Because of the power peak 
load restriction, we cannot run our beamline during the day when the SEB is 
running. Please note that this has implications on all use of beam in the U-V 
lines and into the storage ring in 919.

If we fail on the 2nd, we will regroup and try again on Tuesday the 7th.  The
running mode will be a pulse on demand.  The RHIC transport line has excellent
diagonastics, and one can look at a single shot, change things, and then look
at the next shot.  Rather than have to do long painful scans, as many of us are
used to, we should be able to take a shot, understand it, change things, take
another, etc. and be essentially invisible to the SEB program.  We can probably
also do this for tests in the ring.  Much of the time we had SBE, we were not
using the pulses, but looking at results.  The RHIC people got up to 300 shots
per shift when they needed it, which would correspond to 10 minutes off the
slow beam program.  (300 X 2 sec/shot X 1/60 minutes/seconds = 10 min)

We have a number of SWICS in the beamline, including a SWIC/Ion chamber package
just upstream of the storage ring, so beam tuning should be quite different
from the un-instrumented lines some of us have worked on.

We will start with one bunch extracted, with a bunch intensity of 
0.5 to 1 X 10**12 protons.  After the fault studies, and other commissioning,
we will raise the intensity eventually to full intensity.

We could have much of the beam understood by mid May and be ready to do tests
in 919.  

Charlie Pearson, Dave Phillips and a host of other people have done a wonderful
job in getting us to this point.  Charlie especially deserves congratulations
on getting the target from a design to a spinning set of Ni cylinders in record
time!

As things develop, I will keep you posted.