[BLAST_SHIFTS] Shift summary 02/25/2005 A (1-9)

From: Electronic Log Book (elog@blast05.lns.mit.edu)
Date: Fri Feb 25 2005 - 08:51:46 EST


Operator: zhangchi

spin angle is 47.

not one single event during the shift. only thing to do is licking the buttons to start runs. cell t is fluctuating between 160 and 170 K and is obviously correlated with beam fill.

Some confusion about proper code to use for hPz.

pol.log and RUNLIST-D2.4 updated. As of 8:30am, runs up to 13720 crunched.
with runs from 13697 to 13720, 4kC total, show_deep_asym_all_47.C gives:
        hPz = 0.21+-0.04 (L) 0.29+-0.03 (R)
with these runs, tensor pol is:
        Pzz = 0.35 +- 0.12

hPz is lower than TB reported: " Polarization product for latest runs (runs 13697-13703) is 0.45 +- 0.18 and 0.49+-0.11 according to show_deep_asym.C (45 deg spn angle) corresponding".

show_deep_asym_all_47.C gives 0.16+-0.10 and 0.30+-0.06 for the exact same runs. the macro show_deep_asym_all_47.C is in
        /home/daq/blast/pro2004/analysis/macros/Deuterium/DEEPLIB
while the macro TB used, show_deep_asym.C, is in directory
             /home/daq/blast/pro2004/analysis/macros/Deuterium
Maybe Aaron can clarify the situation about which macro is to be used.

Chi



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