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Weekly JLC Physics Group Meeting
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Place: BLDG 3, KEK
Time: 10:30, 97/02/07
[0] Agenda
0.1) Kakenhi Report
0.2) Workstation Maintenance
0.3) CAL Subgroup Status
0.4) CDC Subgroup Status
[1] Kakenhi Report (Miyamoto)
Most parts are now available.
Those who are responsible for the missing parts should
work harder!
[2] Workstation Maintenance
Should decide the 1997 budget for workstation maintenance.
If we follow the 1996 example, it would cost 3.6Myen for
jlcux1 : hardware + software
jlcux2, www-jlc, jlcsv1, jlcuxm, kobe : hardware only.
We would have to include jlcuxf and jlcuxjk, which causes
additional expenses.
Decided to try to save as much money as possible, by cutting the
maintenance contract to minimum possible.
[3] CAL Subgroup Status (Toeda)
3.1) Test Calorimeter Construction
Calorimeter assembly: almost finished
Discussion:
Is disassembling the calorimeter really
necessary for transporting to the PS counter
hall?
---> to be discussed again in the presence of
Y.Fujii.
3.2) Schedule
Early Feb. : light shielding and cosmic ray test
Feb.21 - 25 : setup in PS
Feb.27 - : beam run
Mar.17 : finish beam run
[4] CDC Subgroup Status (Yamaguchi)
4.1) Cosmic Ray Data Status
Finish the data taking in the central region for both
90- and 45-degree tracks.
---> Got lower O2 concentration (50ppm compared to
usual 100ppm) data with times-2 gas flow.
The pulse height seems bigger.
45-degree data also seem to show a higher pulse
height spectrum.
4.2) Problem
Moved the trigger counter toward the H.V.-side end of
the chamber and started taking 90-degree data.
---> Data taking rate became significantly lower.
Under investigation.
fujiik@jlcux1.kek.jp