Operator: ajmasch
a very quiet shift. much polarized deuterium data taken. ligit started at about 8.1e-08; it is now at 8.4e-08. the line pressure has not increased noticably. the entire shift was at 145mA; the cell temperature did not rise (it's about 94 deg and constant).
good runs: 8817-8821 8823-8830 8832-8835
i looked at the pol deut runs from the past couple of days (in total, about 28kC since the most-recent shutdown). due to monte carlo uncertainties, we are quoting values relative to the "point" asymmetries (i.e. without acceptance taken into account). doing so, i get very good consistency in both sectors with both fits (i.e. to QE d(e,e'p) and elastic p(e,e'p)).
dilution
left right
d(e,e'p) : 0.514 +- 0.013 0.509 +- 0.012
h(e,e'p) : 0.507 +- 0.013 0.498 +- 0.012
assuming h = 68.4 +- 0.4%, this puts the vector polarization at about 74.1%.
i should note that these values were gotten with my macro, not vitaliy's. both macros, though, agree very well. (i spent some time this shift studying the exact differences between the two; with the differences accounted for, i got agreement to one part in a thousand for the dilution values).
my macro (which is more like a library than a single file, sort of) is now located in:
~blast/pro2004/analysis/macros/Deuterium/DEEPLIB/
the main macro's name is show_deep_asym_all.C. for the moment it has the exact same syntax as the show_deep_asym.C macro. to run it, type the following:
root -l show_deep_asym_all.C [file numbers]
up will pop three canvases: a comparison to the point asymmetries, a comparison to pMiss using the monte carlo, and a comparison to Q2 using the monte carlo (since the monte carlo is currently under question, these are just pretty pictures to look at and not much more). tomorrow, i'll add in comparisons versus thetaCMS and phiCMS. though, i suppose it makes more sense to solve the monte carlo problems first...
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