Present: Chris Allgower, Andy Bacher, Tom Rinckel, Paul Pancella, and Ed Stephenson
Meeting came to order at 3:05 pm.
SEPTUM MAGNET
Rinckel reported on the setup of the septum magnet mapping. Several adjustments to the stand have proven necessary. All water is now connected, but the booster pump still needs AC power. Primary load cables are ready, but a few jumpers are still needed. Hall probes are installed. Safety interlock system is complete and operational.
Tom will attempt to power up the magnet tomorrow for the first time. He assumes the large power supplies will probably need some more work, which could take up most of the time he is gone next week (Monday through Thursday). If by chance they work perfectly the first time, Ted Hall could start the mapping in Tom's absence.
Pancella will provide the main grid for the midplane maps, which will probably be done at two excitations, one at the nominal operating field strength, and the other near the maximum. The question is whether to do some additional mapping out of the midplane. Noone present knows what required information is to be gained from this, so Ed will address this question to Berg.
MWPCs
Alan Eads is now in the process of winding wires. We believe all planes are ready for the two MWPCs to be constructed. These could be finished by the end of this month. No work yet reported on WC3. Allgower warns us that destruction of the rooms in the power supply corridor above the Cooler is imminent, and one of these is presently storing wire chambers. Solberg will be reminded of this.
Another visiting committee is coming, this one from IU next week. A poster session/reception is scheduled for Thursday, Jan. 11, from 5:15 to 6:45 pm. We will simply recycle the posters we just showed to the NSF. However, this means our normal meeting time will not be available. It is likely that the CE78 meeting will be scheduled for Friday instead; Stephenson will suggest a time after the visiting committee schedule is finalized.
CHANNEL DESIGN
Pancella revised his previous report on designing the magnetic channel with TRANSPORT. He now believes the previous statement about sextupole components reinforcing eachother was in error, and there was also an (inconsequential) error in the sign of this component in the first quad (K600). The effect on the calculated beam envelope is small, but confidence in the simulation has increased to the point where final quad positions can be given to the designers of the vacuum chamber. The 3He simulation with adjusted target position can now proceed as well.
BEAM REQUEST
Stephenson reported that conditioning of the deuteron vanes is presently underway and going pretty well. Procedures have improved and the risk to RF tubes is believed to be reduced. Beam is expected to be out of the DTL and RFQ sometime next week, when optimization of CIPIOS for deuteron polarization and current will commence. About 4 weeks have been set aside for this procedure.
After such an investment in tuning up beam into CIS, Friesel would naturally like to deliver this beam to a user at the start of the next running period. However, it is hard to see how we could effectively use such a beam at this time. Our next need for deuteron beam is to get calibration data for monitoring luminosity and polari- zation. Since our luminosity monitor in T will detect scattering around 5 degrees in the lab, the current PINTEX setup is not really suitable, being limited to forward angles larger than about 7 degrees. The CE79 setup, scheduled to go into A in the middle of the next running period, is much more suited to small angle scattering. Therefore, our request will reflect our original intention to use deuteron beam only at the end of the running period, starting out with protons for our channel test.
MISCELLANEOUS
Progress on scintillator construction continues, when John V. is not occupied with the LH2 target project.
There is a proposal to remove the computer Uranus (VMS) which was used for lead glass testing. It would move to the STAR laser setup when this occupies its new location. Allgower reports that the testing of the lead glass is practically complete, and that we should soon be thinking of getting Hera setup near the Cooler electronics anyway. Do we also need a cabinet somewhere near the setup? Chris does not see an urgent need for one.
Three avenues for borrowing FERA are still considered active, although naturally progress over the holidays was minimal. Ed will continue to monitor these. Allgower wishes to add 3 PLU modules to the request from Brookhaven, should the opportunity arise.
Check out the new Cooler CSB web site. If you run Netscape from the HP cluster, open the file /cool-csb/www/index.html to start. I can't tell if it is linked to the IUCF public site yet, see Ed for details and to make additions or corrections.
Stephenson will also be away most of next week.
The meeting adjourned at about 4:40 pm.