Run 11 polarization decay

Last modified by Dmitri Smirnov on 25-01-2012

For this study we use fills with similar machine conditions:

15365, 15366, 15368, 15372, 15376, 15378, 15380, 15386, 15390, 15393, 15399, 15425, 15427, 15435, 15436, 15438, 15443

Polarization vs time in fill

The polarization decay reported in the stat box is shown in absolute polarization (%) lost (or gained) per second. To get the number in human format (i.e. absolute polarization percents per hour) one need to multiply the number in the stat box (the "slope" parameter) by 3600.

The zero time 00 in the following plots corresponds to the first measurement in a store.

The average slope for blue ring is 0.3 ± 0.05 %/hour
The average slope for yellow ring is 0.8 ± 0.06 %/hour

Blue-1 Upstream slope = -0.39 ± 0.07 %/hour	Yellow-2 Upstream slope = -0.79 ± 0.07 %/hour
Blue-2 Downstream slope = -0.19 ± 0.07 %/hour	Yellow-1 Downstream slope = -0.86 ± 0.11 %/hour
Polarization vs Time in Fill

Note the not so good $\chi ^{2}$ per degree of freedom.

Profile ratio R vs time in fill

Blue-1 Upstream	Yellow-2 Upstream
Blue-2 Downstream	Yellow-1 Downstream
Profile r vs Time in Fill

Relative beam polarization by measurement number in a fill

One should be very careful interpreting these results as there is no guarantee that the sequential number of the measurement is correct.

Blue-1 Upstream	Yellow-2 Upstream
Blue-2 Downstream	Yellow-1 Downstream
relative Polarization vs Measurement Id in Fill

Profile ratio R by measurement number in a fill

Blue-1 Upstream	Yellow-2 Upstream
Blue-2 Downstream	Yellow-1 Downstream
Profile Ratio R vs Measurement Id in Fill

Last modified by Dmitri Smirnov on 25-01-2012