Cooler-CSB minutes for 9/6/01

Minutes of the COOLER-CSB meeting

September 6, 2001 (EJS)

The list of jobs in the shop was updated, There are several man-days of work left before the insides of the target bos are complete. Materials for the Pb-glass supports have been ordered. Jack Doskow still needs to finish the detail drawings. The field clamp parts are expected to be delivered Oct. 1.

For now, we are switching from the 1/8" to the 3/16" windows for the target box. There was concern that repeated pumpdowns would eventually weaken the 1/8" material, and we don't really need it to be there until actual running starts.

We are looking for an hourly student to help with the wrapping of the mu-metal for the Pb-glass detectors. About 20 applicants have sent in some sort of resume or expression of interest.

We need to be mindful of the cryopump situation. The lower 6-degree pump no longer works. Two others need new displacers. Austic Scientific does some rebuild. It costs $7K for a pump and about $8K for a compressor. One possibility is to simplify the pumps in the G-region now that the chemistry experiment has shut down. There are two pumps there, a helpful feature of one loads up. We could operate with one pump.

There was a long discussion of the potential schedule following the long 2-month shutdown. This resulted in a list of things for which we need beam time. These include:

Beam development, including work on intensity and combos that would help us to hit the target without undue excursions elsewhere in the ring.
Luminosity calibration against d+p scattering.
Measuring d+d elastic scattering angular distribution of cross section and some analyzing powers, including Ay, Ayy, and Axx. This would be done with the PINTEX detectors, operating with the silicon recoil detectors much as they did for p+p elastic scattering, but with an unpolarized target.
Some time to look at Pb-glass with cosmic rays.
Another run with p+d -> 3He+pi0 to commission the Pb-glass array.
Get going on production running.

PINTEX also plans to bring up a BGO array to allow better energy measurements in their breakup experiment. There needs to be some shutdown time alloted to the installation of that array. It is unlikely to be ready to go in before the end of the calendar year. Jack is just now starting to think about the design of this system. John Cameron also would like to have an MPRI construction shutdown for three months in the spring.