Meeting of March 26, 2001

Present: Peter Bosted, Don Crabb, Keith Griffioen, Steve Rock, Piotr
         Decowski, Bill Olson

I) Summary of recent meeting with Steve Williams on March 21 and
   Perry Anthony on March 22. A Project Management Team is being formed,
   which has Perry as Project Manager, Peter as Project Physicist,
   Frank O'Neill for Safety, Bill Olson as Engineer, Ken Baird
   for Installation, and Roger Erickson for Accelerator. Each person
   has an Assistant. This group has agreed to meet once a week 
   (presently Thur. 11 am at EFD). This group will receive input
   for detailed designs, etc. from Science Advisory Board, which 
   is Peter, Steve, Don, and Keith. We should have internal design
   reviews for each Subproject as soon as they are ready. We should
   try to finalize all design parameters, and have a clear mechanism
   for needed changes (hopefully not many of these).

II) Project Publicity. Peter wrote a draft article on the experiments
   for the SLAC Interaction Point. It will be in the May issue. 
   Gerry Peterson revised it for the U. Mass Physics Newsletter. He
   has also written a nice first draft for a CERN Courier article. 
   Peter has agreed to give a talk at Spin 2001 in Beijing in October
   (Steve as backup). Keith has made a nice Talks web page. We need to
   continue to look for places to give talks. 

III) Computing. Perry and Peter met with head of SLAC computing to
   give him a rough idea of our requirements. We will likely store
   all data on disk (with tape backup). 

IV) Target. After more discussion, re-iterated that we will go for
   about 0.4 T transverse field (this is highest that can be easily
   done without major magnet re-design). Perry and John Weisend made
   rough schedule based on Don's input. To run in 2004, we need to
   order magnet very soon. Goal is to have an Internal Design Review
   around May 1. Don and John are working on preparing for this. 

V) Hodoscopes. We probably cannot afford to get 1000 brand new fingers,
   based on recent ODU estimates. Therefore we need to incorporate
   existing E155 fingers into design. This should work well for
   new E160 design: not sure yet about E161. 
   Don has agreed to provide the 70 or so 10 cm by 10 cm by 160 cm
   bars from Jlab GeN experiment. These would be just about ideal
   for the last hodoscope plane (the one behind an absorber), used
   to define clean times for muons. Steve will meet with Gerry Varver
   to find out what E155 fingers he needs for his cosmic ray 
   telescope.

VI) Spectrometer. Peter and Piotr have been working on new 
   E160 design, using B81 as the magnet instead of LASS. Signal to
   noise is much better. Acceptance is lower but can run higher beam
   current. Resolution is better. Peter is working on a report.
   Lew Keller has been authorized to get paid to help work on
   the spectrometer, and has been working on getting field maps
   of the LASS dipole, and of B81.

VII) Kinematics. Peter suggested we run 20,30,40 GeV J/psi rather
   than 15,25,35. This works out much better from spectrometer
   acceptance point of view, and is a better match to RHIC. 
   Keith thinks this is an acceptable change to the run plan,
   esp. given that 15 GeV is a poor measurement in any case, with
   no psi-prime's. 

VIII) Photon beam. Rod day was cancelled, so could not look at
   stuff in switchyard. Will try again April 3 or 4. Plan to start
   looking at goniometer this week. Peter finds thicker (200 to 250
   micron) diamonds would be useful for some of the running: sent
   email to Robert Avakian and Friedel Sellschop. Peter also met
   with GLAST test beam group: he promised to do some quick calculations
   to see if their needs can be met with proposed setup.

IX) Need to decide on date of next coll. meeting. Peter will ask
   if group prefers May 18 plus/minus one week.