Minutes from target meeting held April 12 2007 in 892-1-B09

These minutes are available also from:

http://wwwcompass.cern.ch/compass/detector/target/Minutes/2007/


a) The target linux computer na58pc057 was upgraded to SLC4.

b) The dilution cryostat PLC web server was reconnected to CERN office network.
There is a problem in reloading new Java applets when going from one page to 
the other. If you want to see some values use the direct links on the target 
web page. 

c) The LN2 trap in 3He circulation was regenerated. 0.25 bar of gas impurity
was found. This is probably the nitrogen from the target loading.

d) Norihiro: oxygen analyzer was borrowed from RICH. To be calibrated with air.

e) Fabrice: the three filters after the 4He pumps need to be drained once a 
week. The oil is collected to a small glass vessel.

f) The target shifts were discussed. The hadron run coordinator Andrea sent 
request to the group leaders on the availabilities. Silvia: the RICH will need
regular shifts from May 16. The SPS physics start is on May 26. The plan is
to start regular shifts for the target two weeks before the physics data
taking. Miroslav: from Prague Pavel and Ales could be available to help
in the start of the polarized target. 

g) Claude: Saclay has found a temporary replacement for the broken magnet 
battery charger. The series connected batteries give 100 V to the quench 
back heaters of the magnet. The new magnet safety system will allow to recover
the magnetic field in case of slow discharge. The water security interlock
is not any more sensitive to sudden pressure peaks in the demineralized
cooling water.

h) Kaori: all the Q-meters except #6 were tuned to proton signal. The #6
is for the transverse signal. One varicap missing.