Minutes 2005-03-08
begin 10:35
present DFOT,DH,AO,JDA,MT,BG,PM,LB,JC,MH,DG,JP,GR,CV (recorder)

0) report from ops meeting
cyclotron needs repair inside (water leak), at least 2 1/2 weeks delay in 
schedule.
ISAC schedule has been moved back by 2 weeks.

1) DH: ED1, blue nylon on anode was replaced by black poly-ethylene
voltage was rised to +/-120 kV without conditioning events.
Above 120 kV two different conditioning events are observed: normal 
conditioning with increased
currents, vacuum activities and high x-rays rates; and periodic (2-5 per 
min) excursions
of currents, vacuum and x-rays, which seems to go on forever.
with a Geiger counter the source of x-rays was located, discharges seems to 
be between the electrodes.
Ignoring these periodic discharges the voltage could be rised to +/-155 kV, 
will be
continued to +/-165 kV where the blue nylon had problems.
A web-camera was used to see discharges, but sensitivity was to low to see 
something.

2) DFOT: beam interceptor is installed, will be tested asap.

3) DFOT,CV: 'beta-version' of charge state booster is installed in gas 
target box,
a manual valve was installed to slow down roughing (one C-foil broke during 
pump down).
Airplane servos work fine in vacuum, the foil can be seen with the CCD (5x 
less light with foil in).
A 20 ug/cm2 C-foils was tested, but broke at 0.44 T in target.
More robust 50nm SiN foils will be tested as a next step. If successful, 
new SiN foils should be ordered.

4) DH: status of run (HEBT/S-Bend commissioning, 23Na, 0.32 keV/u), beam at 
FC1, all magnets on.
Water leak on Q5, temporally solution with a bucket.

5) CV: new preamp boards for IC are ready, will be installed after the run.

6) JP: back strips of DSSSD are implemented in DAQ, some work on TDC are 
still needed.

7) MT: E995, first hot sample run planned for Thursday evening. Improved 
ECR changed tuning of ECR.

9) Papers/thesis:
DG: Gamma-paper is in progress
DH: commissioning paper Version 2.0 is released, waiting for response
CJ: writing her thesis, must leave Canada end of March

10) Students:
LB: Thomas Kirchner  (German student) will arrive April 4, planned to work 
on TUDA/TACTIC/GEANT stuff for 6 months.
JDA: Chris Ouellet (MacMaster U) will arrive at the end of March for a 
period of ~3-4 months to work on Ca project and others.
JDA: Anuj Parikh (Yale) will arive at the end of April to work on Al26 project

end of meeting 11:00