Notes from Main Injector/Recycler Group Meeting
Monday, 30 December 2002
BCBrown

Status of RR -- Stan Pruss leading discussion

The available plan for using the dipole correctors has been
implemented.  On Friday, the DC corrections for orbit local bumps
added to the DC correction to put the new desired momentum on the
central orbit have been put in to the g(i) tables.  The dipole
corrections for MI ramp effects have been put into the h(i) table with
a correction of 0 at 8 GeV and non-zero values at 120 and 150 Gev
locations.  This change had been put in previously but taken out.  We
now expect this to be the permanent change.

Plans have been announced for studies of the RR22 transfer line by
Gattuso and Marchionni.  They will be delayed since Alberto is sick
today.

Dan Broemmelsiek reported that an anomalous loss of pbars was noted
during a TeV Shot Setup.  It is not understood.

The new vertical Schottky tank showed large hydrocarbon residues on
initial vacuum checkout.  It is being disassembled and cleaned.
Vacuum certification will probably not occur until during the
shutdown.  The Horizontal Schottky device will be baked soon and is
expected to continue through the vacuum certification process.

Cons Gattuso -- SDA and related data issues

The SDA data for RR pbar shots now looks reasonable.  Some plots are
now going to the Shots log. One can get some longitudinal information
from the MI-SBD information which goes to SDA.  Further discussion of
longitudinal effects and their measurement during transfers occurred.
It was noted that the PBar Source must have longitudinal devices in
the transfer lines in order to measured longitudinal beam properties
of the transferred bunches because in the Accumulator, the same
longitudinal space is occupied by the beam undergoing last turn and
the beam in the core.  This is not true of the Recycler so we can make
measurements on first turn after injection, even when other beam is in
the Recycler, since it will be at a different azimuth.  There is thus
little incentive to add a device to transfer lines to measure the
longitudinal beam properties between the Main Injector and the
Recycler.  There were also extensive discussions of the merits of
dedicated (presumably new) software vs. getting what we need from
existing or improved SBD software and of the problems with getting
results from a console application vs having a dedicated front end
application which produces an ACNET parameter.  Further clarification
will be useful.  

Chandra Bhat also mentioned issues concerning the use of R87
(WAVERUNNER DISPLAY), R86 (RTD720 FOR RECYELER) and I87 (RTD720
DISPLAY).  Additional work is needed to get things set up properly to
use these for the measurements he is carrying out.