Minutes from target meeting held July 2 2004 in 892-2-009

a) The APC SmartUPS 2200 battery was replaced.

b) Jaakko analyzed the temperature during TE-calibration of May and June. 
There is quite good agreement between 3He and 4He vapor pressure temperatures
based on ITS-90. Small discrepancy from -4 to +60 mK can be attributed to 
the nonlinear behavior of the pirani pressure gauge when helium gas pressure 
is measured. The behavior of the spin temperature during TE-calibration was
simulated using simple RC-model. With spin-lattice relaxation time of 10^4 s 
spin temperature was estimated and stable temperature region was identified.

c) Isabel showed plots of TE-signal analysis. Chi-squared histogram of the 
baseline fitting done for the TE-signals shows weak systematic dependence
on the selection of the baseline fitting region. Different methods to remove
bad TE-signals were tried: robust fitting and using quantiles to remove points
that appear with low probability.

d) Target material was re-polarized on July 1 from 9:15 to 20:15. 
The polarization increased from -50.81 % to -51.04 % for upstream and
+52.85 % to +53.19 % for downstream cell. For the negative polarization
this gives -0.021 %/h buildup rate and for the positive polarization
+0.031 %/h. The 3He flow was 51 - 53 mmol/s during polarization.