Cooler-CSB Group Meeting Minutes

February 18, 2002 - (EJS)

Present: Chris Allgower, Andy Bacher, Chris Lavelle, John Olmsted, Paul Pancella, Tom Rinckel, and Ed Stephenson

OUTSIDE USERS HELPING WITH MARCH 6-18 RUN:

Paul Pancella will be at IUCF during the Western Michigan spring break. His dates are February 4 - 10. We need information for Hal Spinka and Mark Pickar. Tom Rinckel and Jack Doskow will leave for spring break and be out of the lab from February 9 on.

RUN PLANNING:

Linda Elbert has asked for information on the amount of support that will be needed for Cooler running. (This information has been passed along.)

We probably need about two days of access to cover all the setup tasks now knows. These include:

• replace silicon in new mounting and connect to utilities.
• move forward luminosity counters to azimuthal angle of 24 deg.
• install exit window, replace MWPC-1.
• fix mount and install delta-E(1).
• set up pulser for 4-He and change/check electronics timing.
• test all scintillators and high voltages.
• check missing wire on Y(2).

The development of deuteron intensity was postponed because of problems with the polarization from CIPIOS. So that development will need to be done now. Things to try, besides tuning, include:

• increase CIS extraction energy from 90 to 110 MeV.
• get the debuncher working.
• get a thinner stripping foil from Bill Lozowski.

The main new thing to test will be the luminosity detectors. So we will begin with the d+d scintillators and new silicon position. There should be some consistency between profile measurements. Then we roll back the Pb-glass and add the forward 25 deg. counters to the system, switching to a hydrogen gas target. If this new system has problems, we should made every effort to fix them during the run.

For the channel, currents in the magnets will be scaled according to the change in rigidity. Timing will be changed according to the energy loss calculations. The trigger will include dE1*dE2*E in coincidence and V1*V2 as a veto (although we may test rates without the veto).

REPLAY

There is no evidence for crosstalk among any of the delta-E(1) scintillators.

SMALL STUFF:

• Jack Doskow has two spare cryopumps (one large and one small).
• Bill Lozowski has the HD gas for calibration. We still need to prepare a larger mixed bottle for tuning. We need to check on the status of the D2 order delivery.
• Tom will get the cable connectors mounted for the capacitor arrays.

Submitted by
Ed Stephenson