Minutes from target meeting held July 22 2011 in 892-2-009

These minutes are available also from:

http://wwwcompass.cern.ch/compass/detector/target/Minutes/2011/

a) Remote video monitoring of the target control room was discussed. This 
should include also sound to hear the alarms. 

b) Calculate polarization correction factors in negative solenoid current. 
See http://wwwcompass.cern.ch/elog/target_polar/121

c) Isolation vacuum diffusion pump stopped Thursday afternoon 15:10 due to
spike in the cooling water temperature. Reset PLC interlock and restart
pumps.  At 15:30 the water pressures PCW-TAP-I=4.8 bar and PCW-TAP-O=2.9 bar.
Run logbook comment 38781.

d) Yuri: TTH4, TTH5 and TTH6 need to be recorded before and after field
rotation for better understanding of the polarization relaxation. Fit
from Jonas to the frozen spin data gave relaxation times in 2.5 T field 
9532 h for upstream, 4464 h central cell and 10511 h downstream.