Minutes from weekly target meeting 30th of May 2003 in 888

a) The Q-curves were shifted when the mixing chamber heater filter/fuse box
was connected. The original Q-curves were recovered after removing the box.

b) Yuri proposed electron nuclear double resonance measurement for electron 
spin relaxation time. 

c) The magnet isolation vacuum gauge connection was modified to allow 
installation of the SciFi station 3 to new support structure which is not
mechanically connected to the magnet any more.

d) Low intensity electron beam from 27 May to 1 June was used for COMPASS
spectrometer calorimetry calibration. A short pion test beam was used to
test the spectrometer for hadron setup on 30 May. 

e) The microwave leakage was tested by polarising only one target cell and
observing polarisation build up on the other cell. Typically with +32 %
upstream polarisation done in 10 hours downstream polarisation of +4 % was 
observed.

f) New TE calibration was decided to confirm the results from the first 
calibration. 

g) Yuri said that the first moments analysis with outer coils shows good
results. Kaori plotted the ratio of measured areas between coil #3 and 
other coils. The ratio stays very well constant. Yuri said that this excludes 
the possibility to have any error in the TE-calibration. Jaakko said that the
ratios should be compared to ratios obtained from TE-calibration in both
positive and negative fields. The microwave power distribution is homogeneous
along the axis of the microwave cavity. 

h) Norihiro measured the cooling power of the dilution cryostat to be 2 W 
with 8.0 V or 10 V still heater. In this case 99% of the circulating Helium
is 3He. 300 mW. Yuri 0.3 mW/cm^3. 
Jaakko 3He rich phase always above target material inside mixing chamber,
thus no big effect expected from removing 3He. Heat leak from radiation
from TH shields: were measured to be > 3.0 K, 1.1 K and 280 mK. Heat leak
from cavity. Single shot operation for polarisation.

i) New cell for the oxygen analyser. The pins were broken while changing
the cell.