Minutes of E362 FD weekly meeting
97/04/15, 13:00- , R307
Present:K.Nakamura,K.Nishikawa,T.Ishii,Y.Ohyama,T.Ishida,T.Kobayashi,
S.Mine,T.Inagaki,A.Sakai,M.Sakuda(KEK),M.Kohama(Kobe),T.Maruyama(Tohoku)

 Since April 1, 1997, KEK and INS were merged into one organization,
High Energy Accelerator Research Organization (KEK). The previous physics 
department becomes a new institute, Institute of Particle and Nuclear Studies 
(IPNS).
 
(1) Xenon system 
Maruyama/Inagaki prepared the xenon flash lamp system for the lead glass 
counters. The purpose of the system is to monitor the gain of each LG counter.
They observed the good correlation between Am-NaI signal and 
the xenon lamp signal. 

(2) Lead Glass (Kobayashi)
He compared the pulse heights of 9 blocks for cosmic rays data and for
electron beam data. When the data are normalized by electron beams, 
there are 10% variations among 9 blocks for cosmic rays. We need 5%
accuracy. (This turns out to be due to the geometry. It is solved now.)
The beam test of 9 LG blocks with xenon system will begin next Tuesday. 

(3) Pion monitor
Inagaki explained the procedure of the beam test for a multi-channel PMTs,
which will be used for pion monitor. They inject an electron into a small
piece of prism lens to produce Cherenkov light, 0.9 photons. 
They will measure the detection efficiency next week.

(4) Muon chamber
They completed the tension measurement for all chambers. Mine found 7 bad
wires out of 390x8 long chambers. 

(5) SCIFI
*Mine studied the separation of two clusters using beta-ray data. 1.5mm-2mm.
*IIT will come back to KEK this week. 
*KEK-Boston TV meeting on April 16, 9:00->
*SCIFI group meeting on April 21, 15:00->, Bldg.3, 2nd floor, conference room.

(6) Offline
Ishida distributed an offline memo showing the status. 

***** E362 collaboration meeting *****
April 22, 9:00, KEK Seminar Hall.
//(M.Sakuda)