The helium purification suffered a set back over night. The 
purification will take an extra day; the purification is expected to be
finished sometime tomorrow. 
	The reverse proton studies in the debuncher has resulted in the
vertical aperture increasing to ~22pi-mm-mrad. Now both planes are better
than what was measured in Jan. There will be further studies to try to 
identify other possible restrictions as well as studies of beam line transfer
efficiencies which will help stacking.

					Keith
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 Summary of Thursday meeting 3/9/2000.

 Present (and this may be the most interesting part): a whole crew..

 Boca, Stancari (G), Stancari (M), Cester, Graham, Rumerio, Seo, Negrini,
 Calabrese, Bettoni, Borreani, Legger, Obertino, Lasio, Baldini, Lasio,
 Garzoglio, Gollwitzer, Pordes.


 New person: Gian Luigi Boca from University of Pavia working with Ferrara
 group - welcome.
 Returning person: Gabriele: welcome back..

 >Pbar Status: 
 Aperture Improvements are continuing to be made. 
 Helium purification may be achieved by end Friday.

 >Immediate Issues: 
 Could VLPC cryostat be set to liquid nitrogen temperature?
 What is happening with cooling of straws?
 Need to check reason for higher rate of Freon consumption than anticipated.
 Need to verify that jet beam valve can be opened (ie that it really is pbar
 interlock only that is preventing it from being opened)

 >If we get a stack this weekend, topics to be worked on:
 Charged Trigger (including phi-phi-gamma hardware); (Wander, Roberto)
 Test new P77 program - which includes narrow and wide frequency spectrum;
 (Giulio and off-line)
 Horizontal and Vertical Scan of Beam position - need luminosity monitor
 folks to do analysis.
 Straw chamber threshold/efficiency study; (Margherita, Federica)
 Minbias strobe timing study (need new HV files); (Federica/Michelle)
 Gas-jet Density measurements on new path (now 2 degrees from phase 
 transition) at end of stack; (Gabriele)

 >Discussion:
 First stack to be psi' scan with initial current of >25 milliamps.
 (Providing pbar can stack at rate >2 mA/hr or so)
 Does anyone want chi-2 or chi-1 data?
 Next stack 1P1 or chi_0? 
 Some discussion in favor of chi_0 - ensures apparatus (including software) 
 is fully tuned, allows time for completion of writing and commissioning 
 phi-phi-gamma filter. Need about 15 pb-1 for scan - not enough for 
 gamma-gamma measurement which needs about 15 pb-1 on peak and 10 pb-1 on 
 some background point. (To set a scale, 15pb-1 = 150 mA of pbars 
 used)

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 Stephen