Minutes of the MUCOOL Mtg. March 17, 00

Scribe:  Jim Norem

 Yuri Pischalnikov presented an update of the work being done by Al Bross,
 Jerry Z, Marvin J. and Stefen G and him. They are buying a fast digital scope,
 microchannel plate, 50 ps lightsource and starting to build equipment.
 The Ultra High Vacuum enclosure is underway and they are testing
 a bakable high frequency feedthru for the signal.  The photocathode
 work is in progress, and they are working on a fast readout.

 Al Moretti reported that the Superconducting magnet is on the Fermilab
 site and will be moved to Lab G when some preliminary issues are settled.
 First, the pressure vessel calculations have to be checked, ODH hazards 
 evaluated, enclosure venting problems have to be solved, and transfer 
 lines and controls have to be built.

 5 cells of Al rf cavity (without ends) are mounted in A0.  The results of a
 bead pull look reasonable and it should be about a month before more
 extensive measurements will give the final dimensions for a copper
 cavity.  The 805 MHz high power cavity looks like being ready at the
 end of the summer.

 Mary Anne Cummings reported that the absorber R&D problems are being
 clarified.  The Fermilab H2 safety review will be the determining factor
 for all participants.

 A tour was made of Argonne facilities and there seemed to be two 
 possible locations where high power beam/target tests could be made.
 The IPNS provides 450 MeV protons and the Bldg 211 linac gives electrons.
 IPNS high energy beam tends to be hard to get to, but 4E12 protons are
 available at 50 MeV, which is 6X minimum ionizing, thus the beam is
 very intense by our standards, but has a longer pulse.  The 211 Linac gives
 50 nC (2e11 electrons in a pulse that is less than 1 ns long.  Kevin Cassel
 described the heat transfer problem at the windows and the variables
 that have to be determined to check theoretical calculations.  There was
 considerable discussion about the window heating problem, and nobody 
 brought enough numbers to reach any conclusions, but the numbers have
 been calculated, and conclusions and complete unanimity are expected.

 Alvin Tollestrup reported on a preliminary look at some of the cooling data.
 He described the momentum, angle and size distributions of particles which
 go through the cooling line and the distributions of those which don't make
 it through the line.  Those which don't make it have a wider energy, angle,
 and position spread than those that do make it and the energy distribution
 extends to lower momenta.  This analysis will continue

 Panagiotis Spentzouris described the perspective used to write the 
 cooling chapter of the report.  General arguments lead to 
 specific statements and these were discussed.

 A very general discussion then developed about the strengths and weaknesses
 of the chapter draft and the calculations on which it was based.  One
 conclusion was that the group should be quite specific about R&D needs as soon
as
 possible so these R&D items could be gathered into a well defined, focussed 
 program rather than a loose list of items which will eventually be required.  
 The placement of the MUCOOL effort in this program was regarded as important
 but not specified precisely yet.