Run 11 ramp measurement study

From RHIC Spin Group

Last modified by Dmitri Smirnov on 10-07-2012


Sequential polarization measurements were taken at 24, 100, 250, and 100 GeV beam energy in each of the following fills: 15415, 15416, 15417, 15418

Note that in the following plots the beam energy of "400 GeV" corresponds to the actual beam energy of 100 GeV after the ramp down from 250 GeV

Raw asymmetries

The following plots show raw asymmetries as measured by each polarimeter.

C hAsymVsEnergy B1U.png C hAsymVsEnergy Y2U.png
Blue-1 Upstream Yellow-2 Upstream
C hAsymVsEnergy B2D.png C hAsymVsEnergy Y1D.png
Blue-2 Downstream Yellow-1 Downstream


Analyzing power

These values were used in calculation of polarization. For different polarimeters we use different scale factors as defined from the normalization to the H-jet data.

C hAnaPowerVsEnergy B1U.png C hAnaPowerVsEnergy Y2U.png
Blue-1 Upstream Yellow-2 Upstream
C hAnaPowerVsEnergy B2D.png C hAnaPowerVsEnergy Y1D.png
Blue-2 Downstream Yellow-1 Downstream


Polarization as measured in offline

C hPolarVsEnergy B1U.png C hPolarVsEnergy Y2U.png
Blue-1 Upstream Yellow-2 Upstream
C hPolarVsEnergy B2D.png C hPolarVsEnergy Y1D.png
Blue-2 Downstream Yellow-1 Downstream


Polarization profiles

C hRVsEnergyBinned B1U.png

C hRVsEnergy B1U.png

C hRVsEnergyBinned Y2U.png

C hRVsEnergy Y2U.png

Blue-1 Upstream Yellow-2 Upstream
C hRVsEnergyBinned B2D.png

C hRVsEnergy B2D.png

C hRVsEnergyBinned Y1D.png

C hRVsEnergy Y1D.png

Blue-2 Downstream Yellow-1 Downstream


Polarization vs time for runs 15415, 15416, 15417, 15418

Last modified by Dmitri Smirnov on 10-07-2012