[BLAST_SHIFTS] Shift summary 08/12/2003 Owl

From: Electronic Log Book (elog@blast05.lns.mit.edu)
Date: Tue Aug 12 2003 - 08:06:49 EDT


Operators: nikolas chris2 vziskin

0:00-4:00 took ABS H2 data with only one target state. thought we were flipping the beam helicity each fill, but actually weren't, since CCR were flipping the waveplate by hand, at the same time it was being done automatically. worse, i noticed that the flipping was taking place even during the injection (at about 1/4 total fill) these runs should be checked with compton for polarization.
runs 1870-1889

4:00-700 took unpolarized data at 0.05 sccm. runs 1892-1895 had the same problem of above, and run 1896 was real noisy (beam spill monitors) runs 1897-1904 were good unpol runs

7:00-8:00 resumed with ABS data, being careful to watch the helicity state during the fill.



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