Re: [BLAST_SHIFTS] Shift summary 03/21/2005 A (1-9)

From: Richard G Milner (milner@MIT.EDU)
Date: Mon Mar 21 2005 - 09:45:23 EST


Have the data cuts used in the analysis to extract target polarization
been looked at recently? The variations from left to right and from day
to day seem to be excessively large.
Richard

On Mon, 21 Mar 2005, Electronic Log Book wrote:

> Operator: egeis
>
> When I got here there had been a transmitter trip and CCR was unable to fill consistently until ~2:40. Runs are still at 1 M and they're still filling at 225.
>
> At about 5:40, Guard wire trips began causing problems in L21. After a half hour of useless voltage drops, I called Doug and he recommended resting the chambers for an hour. I rested them 45 minutes, filled, and trips resumed immediately. I rested them another 45 minutes, filled, and trips, again, resumed immediately. Now the guard wire trips are bouncing around from box to box... no sense can be made of this so we're turning them off until Doug arrives.
>
> Runs: 14521 14523-14530
>
> Polarization values seem to be low. Runs 14487-14503 show
> L: 0.369 +/- 0.07
> R: 0.386 +/- 0.05
>
> I'm sure we'll all make our own insignificant conclusions about these values. I want to mention that
according to pol.log, the right sector measured/fitted values seem to fluctuate between 0.333 to 0.430
while the Left Sector values fluctuate between 0.319 and 0.667. Left Sector seems good for the optimists while right sector seems somewhat disregarded. Polarization is obviously up but we're still dragging behind last year's miracle. I also see a 20% decrease in thickness.
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