Moeller Polarimeter Raw Results Archives 2001

Beam Polarization: Raw Results 2001

Results 2001

07 June 2001 0:40-4:20.

The beam energy is 1.197 (Acc), one linac is 0.5668(Acc), N/S=0.567, inj=0.0638 (MCC). Injector angle is 16.0^o, the 1/2 wave plate was OUT(??).

The laser phase was at ?^o (not read out).

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9509-9510	90.2	-	0.50uA	-	-	thr=70mV, raster OFF
9497-9506	23.5	82.70+/-0.40	19.5	80.80+/-0.40	1.9
9511-9518	163.5	78.40+/-0.40	165.0	77.80+/-0.40	2.6
Average	-	80.50+/-0.30	-	79.30+/-0.30	-	Av: 79.90+/-0.30 Dead time not included
9519	163.5	-	0.50uA	-	-	thr=70mV LED 6.3% dt - 3.1% for 163.^o

The full information is given here .

The final result: Pz=82.4 +/- 0.30(stat) +/- 2.4(syst-prelim) (1/2 wave plate OUT??, 16.0^o Wien angle) (dead time correction of 3.1%)

09 June 2001 9:00-11:30.

The beam energy is 5.737 (Acc), one linac is 0.5674(Acc), N/S=0.5674, inj=0.0638 (MCC). Injector angle is 16.5^o, the 1/2 wave plate was IN(??).

The laser phase was at ?^o (not read out).

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9537-9538	90.2	-	0.60uA	-	-	thr=140mV, raster OFF
9529-9536	22.5	83.20+/-0.30	22.6	83.30+/-0.30	1.6
9539-9546	163.5	81.30+/-0.30	160.9	82.50+/-0.30	1.1
Average	-	82.30+/-0.20	-	82.90+/-0.30	-	Av: 82.60+/-0.20 Dead time not included
9547	163.5	-	0.60uA	-	-	thr=140mV did not work (DT should be low)

The full information is given here .

The final result: Pz=82.9 +/- 0.20(stat) +/- 2.4(syst-prelim) (1/2 wave plate IN, 16.0^o Wien angle) (dead time correction not done, assumed to be below 1%)

14 June 2001 4:40-8:00.

The beam energy is 5.7307 (EP), one linac is 0.56669(Acc), N/S=0.56669, inj=0.064 (MCC). Injector angle is 2.5^o, (start) the 1/2 wave plate was OUT(??).

The laser phase was at ?^o (not read out).

Mott: -79.1+/-0.66(stat)+/-0.48(sys) (see ELOG)

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs Dial angle Calculated angle chi2 comments
angle Polarization % angle Polarization %

9559-9560 90.2 - 0.60uA - - thr=140mV, raster ON

9551-9558 23.0 -80.30+/-0.25 22.0 -79.70+/-0.25 1.8 Wien=2.5^o

9561-9568 163.5 -81.40+/-0.20 163.3 -81.50+/-0.20 1.7

Average - -80.80+/-0.15 - -80.60+/-0.15 - Av: 80.70+/-0.15 Dead time not included

9569-9570 163.5 - 0.60uA - - thr=140mV did not work: no signal on ApL

9579-9580 90.2 - 0.60uA - - thr=140mV, raster ON

9581-9588 23.0 -83.00+/-0.22 22.0 -82.80+/-0.22 3.0 Wien=22.5^o

9571-9578 163.5 -81.60+/-0.22 163.2 -81.70+/-0.20 2.5

Average - -82.30+/-0.15 - -82.20+/-0.15 - Av: 82.30+/-0.15 Dead time not included

9589-9596 23.0 -82.50+/-0.24 - - raster OFF

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9559-9560	90.2	-	0.60uA	-	-	thr=140mV, raster ON
9551-9558	23.0	-80.30+/-0.25	22.0	-79.70+/-0.25	1.8	Wien=2.5^o
9561-9568	163.5	-81.40+/-0.20	163.3	-81.50+/-0.20	1.7
Average	-	-80.80+/-0.15	-	-80.60+/-0.15	-	Av: 80.70+/-0.15 Dead time not included
9569-9570	163.5	-	0.60uA	-	-	thr=140mV did not work: no signal on ApL
9579-9580	90.2	-	0.60uA	-	-	thr=140mV, raster ON
9581-9588	23.0	-83.00+/-0.22	22.0	-82.80+/-0.22	3.0	Wien=22.5^o
9571-9578	163.5	-81.60+/-0.22	163.2	-81.70+/-0.20	2.5
Average	-	-82.30+/-0.15	-	-82.20+/-0.15	-	Av: 82.30+/-0.15 Dead time not included
9589-9596	23.0	-82.50+/-0.24	-	-		raster OFF

The full information is given here .

The final results:
Pz=80.7 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate OUT, 2.5^o Wien angle) (dead time correction not done, assumed to be below 1%)

Pz=82.3 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate OUT, 22.5^o Wien angle) (dead time correction not done, assumed to be below 1%)

18 June 2001 21:00-22:40.

The beam energy is 5.7307 (EP), one linac is 0.56669(Acc), N/S=0.56669, inj=0.064 (MCC). Injector angle is 22.5^o, the 1/2 wave plate was IN(??).

The laser phase was at ?^o (not read out).

Mott: -79.1+/-0.66(stat)+/-0.48(sys) (see ELOG)

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9606-9607	90.0	-	0.55uA	-	-	thr=140mV, raster ON
9598-9605	23.0	82.43+/-0.25	21.7	81.66+/-0.25	0.6
9608-9615	163.5	82.78+/-0.21	163.3	82.87+/-0.21	0.8
Average	-	82.60+/-0.15	-	82.26+/-0.15	-	Av: 82.43+/-0.15 Dead time not included
9616	163.5	-	0.55uA	-	-	thr=140mV ApL removed from coincid
9618	163.5	-	0.55uA	-	-	LED: ApL not used, dead time=1.0%

The full information is given here .

The final results:
Pz=82.43 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate IN, 22.5^o Wien angle) (dead time correction not done, assumed to be about 0.5%)

13 July 2001 8:40-11:00.

The beam energy is 5.7307 (EP), one linac is 0.56669(Acc), N/S=0.56669, inj=0.064 (MCC). Injector angle is 2.3^o, the 1/2 wave plate was OUT.

Injector: one laser is used. The laser phase was at ?^o (not read out).

Mott: -79.1+/-0.66(stat)+/-0.48(sys) (see ELOG)

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs Dial angle Calculated angle chi2 comments
angle Polarization % angle Polarization %

9628-9629 90.0 - 0.60uA - - thr=140mV, raster ON

9620-9627 23.0 -82.82+/-0.25 21.8 -82.10+/-0.25 1.7

9630-9637 163.5 -83.52+/-0.22 163.1 -83.70+/-0.21 2.1

Average - -83.17+/-0.17 - -83.03+/-0.17 - Av: 83.03+/-0.17 Dead time not included

9638 163.5 - 0.55uA - - thr=140mV ApL at +0V

9639 163.5 - 0.55uA - - thr=140mV ApL at +100V

9640 163.5 - 0.55uA - - thr=140mV ApL at +200V

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9628-9629	90.0	-	0.60uA	-	-	thr=140mV, raster ON
9620-9627	23.0	-82.82+/-0.25	21.8	-82.10+/-0.25	1.7
9630-9637	163.5	-83.52+/-0.22	163.1	-83.70+/-0.21	2.1
Average	-	-83.17+/-0.17	-	-83.03+/-0.17	-	Av: 83.03+/-0.17 Dead time not included
9638	163.5	-	0.55uA	-	-	thr=140mV ApL at +0V
9639	163.5	-	0.55uA	-	-	thr=140mV ApL at +100V
9640	163.5	-	0.55uA	-	-	thr=140mV ApL at +200V

The full information is given here .

The final results:
Pz=-83.03 +/- 0.17(stat) +/- 2.4(syst-prelim) (1/2 wave plate OUT, 2.3^o Wien angle) (dead time correction not done, assumed to be about 0.5%)

29 July 2001 4:30-6:10.

The beam energy is 5.7307 (EP), one linac is 0.56669(Acc), N/S=0.56669, inj=0.064 (MCC). Injector angle is 2.3^o, the 1/2 wave plate was IN.

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9650-9651	90.0	-	0.55uA	-	-	thr=140mV, raster ON
9642-9649	23.0	81.96+/-0.20	21.9	81.31+/-0.20	1.8
9652-9659	163.5	82.43+/-0.20	163.6	82.39+/-0.20	0.3
Average	-	82.20+/-0.15	-	81.80+/-0.15	-	Av: 82.00+/-0.15 Dead time not included
9661	163.5	-	0.55uA	-	-	LED: DT=1.1%

The full information is given here .

The final results:
Pz= 82.00 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate IN , 2.3^o Wien angle) (dead time correction not done, assumed to be about 0.5%)

06 August 2001 19:00-20:30.

The beam energy is 3.469 (EP), one linac is 0.5675(Acc), N/S=0.5675, inj=0.064 (MCC). Injector angle is 25.5^o, the 1/2 wave plate was OUT.

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9703-9704	90.0	-	0.33uA	-	-	thr=70mV, raster ON
9688-9696	23.5	-67.20+/-0.20	21.4	-66.20+/-0.20	0.8
9697-9702	43.0	-62.90+/-0.40	43.2	-63.10+/-0.40	1.3
9705-9710	148.0	-74.80+/-0.30	150.5	-72.90+/-0.30	0.5
9711-9718	163.5	-72.60+/-0.20	163.2	-72.70+/-0.20	2.4
9719	163.5	-	0.33uA	-	-	LED: DT=0.3%

The full information is given here .

The final results was obtained fitting the 4 measurements (see the plot):
Pz=-70.50 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate OUT, 25.5^o Wien angle) (dead time correction assumed to be about 0.3% at 20^o)

17 August 2001 17:30-20:30.

The beam energy is 4.607 (accel), one linac is 0.5679(Acc), N/S=0.5679, inj=0.064 (MCC). Injector angle is -22.9^o, the 1/2 wave plate was IN.

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs Dial angle Calculated angle chi2 comments
angle Polarization % angle Polarization %

9723-9726 23.0 -81.30+/-0.25 - - 0.6 0.58µA , raster ON

9737-9738 90.0 - 0.37µA - - thr=110mV, raster ON

9727-9732 23.0 -80.40+/-0.25 19.3 -78.40+/-0.25 2.5 0.37µA

9733-9736 40.0 -83.10+/-0.40 37.6 -80.30+/-0.40 0.8

9739-9742 153.0 -73.30+/-0.30 150.5 -75.00+/-0.30 0.2

9743-9748 163.5 -74.40+/-0.20 160.0 -75.90+/-0.20 1.6

9749 163.5 - 0.36uA - - LED: DT=1.2% all

Supermendur target P=7.95%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9723-9726	23.0	-81.30+/-0.25	-	-	0.6	0.58µA , raster ON
9737-9738	90.0	-	0.37µA	-	-	thr=110mV, raster ON
9727-9732	23.0	-80.40+/-0.25	19.3	-78.40+/-0.25	2.5	0.37µA
9733-9736	40.0	-83.10+/-0.40	37.6	-80.30+/-0.40	0.8
9739-9742	153.0	-73.30+/-0.30	150.5	-75.00+/-0.30	0.2
9743-9748	163.5	-74.40+/-0.20	160.0	-75.90+/-0.20	1.6
9749	163.5	-	0.36uA	-	-	LED: DT=1.2% all

A new supermendur target P=7.92%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs Dial angle Calculated angle chi2 comments
angle Polarization % angle Polarization %

9761-9762 90.0 - 0.37µA - - thr=110mV, raster ON

9750-9755 23.0 -82.30+/-0.25 16.9 -79.20+/-0.25 0.6 0.37µA

9756-9759 40.0 -87.70+/-0.50 34.5 -81.50+/-0.40 1.8

9763-9766 153.0 -71.10+/-0.40 146.9 -75.60+/-0.30 1.5

9767-9772 163.5 -73.60+/-0.25 156.5 -77.00+/-0.20 3.4

9774 163.5 - 0.36uA - - LED: DT=0.3% no ApL

A new supermendur target P=7.92%. Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9761-9762	90.0	-	0.37µA	-	-	thr=110mV, raster ON
9750-9755	23.0	-82.30+/-0.25	16.9	-79.20+/-0.25	0.6	0.37µA
9756-9759	40.0	-87.70+/-0.50	34.5	-81.50+/-0.40	1.8
9763-9766	153.0	-71.10+/-0.40	146.9	-75.60+/-0.30	1.5
9767-9772	163.5	-73.60+/-0.25	156.5	-77.00+/-0.20	3.4
9774	163.5	-	0.36uA	-	-	LED: DT=0.3% no ApL

The full information is given here .

Old target
The final results was obtained fitting the 4 measurements (see the plot):
Pz=-77.60 ± 0.12(stat) ± 2.4(syst-prelim) (1/2 wave plate IN, -23.^o Wien angle) (dead time correction assumed to be about 0.6% at 20^o)
New target
The final results was obtained fitting the 4 measurements (see the plot):
Pz=-78.70 ± 0.13(stat) ± 2.4(syst-prelim) (1/2 wave plate IN, -23.^o Wien angle) (dead time correction assumed to be about 0.5% at 20^o)
The spin angle measured is -18.7±1.3^o.

27 August 2001 10:30-11:30.

The beam energy is 5.734 (accel), one linac is 0.567(Acc), N/S=0.567, inj=0.0638 (MCC). Injector angle is 4.4^o, the 1/2 wave plate was IN.

Supermendur target P=7.95% (old). Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs Dial angle Calculated angle chi2 comments
angle Polarization % angle Polarization %

9786-9787 90.0 - 0.37uA - - thr=140mV, raster ON

9780-9785 23.0 87.36+/-0.20 21.4 86.37+/-0.20 2.1

9788-9795 163.5 81.87+/-0.20 158.6 84.31+/-0.20 1.9

Average - 84.60+/-0.15 - 85.34+/-0.15 - Av: 84.97+/-0.15 Dead time not included

9796 163.5 - 0.37uA - - LED: DT=0.5%

Supermendur target P=7.95% (old). Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9786-9787	90.0	-	0.37uA	-	-	thr=140mV, raster ON
9780-9785	23.0	87.36+/-0.20	21.4	86.37+/-0.20	2.1
9788-9795	163.5	81.87+/-0.20	158.6	84.31+/-0.20	1.9
Average	-	84.60+/-0.15	-	85.34+/-0.15	-	Av: 84.97+/-0.15 Dead time not included
9796	163.5	-	0.37uA	-	-	LED: DT=0.5%

The full information is given here .

The final results:
Pz= 84.97 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate IN , 4.4^o Wien angle) (dead time correction not done, assumed to be about 0.25%)

Corrected information: Supermendur target P=7.95% (old). Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs Dial angle Calculated angle chi2 comments
angle Polarization % angle Polarization %

9786-9787 90.0 - 0.37uA - - thr=140mV, raster ON

9778-9785 23.0 87.42+/-0.18 17.2 84.24+/-0.18 1.1

9788-9795 163.5 81.99+/-0.19 157.4 85.15+/-0.19 1.9

Average - 84.71+/-0.15 - 84.70+/-0.15 - Av: 84.70+/-0.15 Dead time not included

9796 163.5 - 0.37uA - - LED: DT=0.5%

Corrected information: Supermendur target P=7.95% (old). Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9786-9787	90.0	-	0.37uA	-	-	thr=140mV, raster ON
9778-9785	23.0	87.42+/-0.18	17.2	84.24+/-0.18	1.1
9788-9795	163.5	81.99+/-0.19	157.4	85.15+/-0.19	1.9
Average	-	84.71+/-0.15	-	84.70+/-0.15	-	Av: 84.70+/-0.15 Dead time not included
9796	163.5	-	0.37uA	-	-	LED: DT=0.5%

The full information is given here .

The final results:
Pz= 84.70 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate IN , 4.4^o Wien angle) (dead time correction not done, assumed to be about 0.25%)

29 August 2001 19:30-21:30.

The beam energy is 5.739 (accel), one linac is 0.5675(Acc), N/S=0.5675, inj=0.0638 (MCC). Injector angle is 4.4^o, the 1/2 wave plate was OUT.

Supermendur target P=7.95% (old). Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs Dial angle Calculated angle chi2 comments
angle Polarization % angle Polarization %

9808-9809 90.0 - 0.34uA - - thr=140mV, raster ON

9800-9807 22.5 -83.79+/-0.20 18.7 -81.73+/-0.20 1.8

9811-9818 163.5 -81.83+/-0.20 160.2 -83.39+/-0.20 3.6

Average - -82.80+/-0.15 - -82.56+/-0.15 - Av: 82.70+/-0.15 Dead time not included

9819 163.5 - 0.34uA - - LED: DT=0.6%

9820-9827 163.5 -82.10+/-0.30 - - 1.4 LG 1,4,5,8 OFF

9800-9807 40.0 -83.79+/-0.30 36.6 -79.33+/-0.30 0.9

Supermendur target P=7.95% (old). Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9808-9809	90.0	-	0.34uA	-	-	thr=140mV, raster ON
9800-9807	22.5	-83.79+/-0.20	18.7	-81.73+/-0.20	1.8
9811-9818	163.5	-81.83+/-0.20	160.2	-83.39+/-0.20	3.6
Average	-	-82.80+/-0.15	-	-82.56+/-0.15	-	Av: 82.70+/-0.15 Dead time not included
9819	163.5	-	0.34uA	-	-	LED: DT=0.6%
9820-9827	163.5	-82.10+/-0.30	-	-	1.4	LG 1,4,5,8 OFF
9800-9807	40.0	-83.79+/-0.30	36.6	-79.33+/-0.30	0.9

The full information is given here .

Fitting the measurements at 3 target angles (see the plot) produce a very large chi2, because of the point at 40^o. For the moment, we have no explanation for this.
The final results:
Pz=-82.70 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate OUT, 4.4^o Wien angle) (dead time correction not done, assumed to be about 0.3%)

07 September 2001 15:30-17:30.

The beam energy is 5.739 (accel), one linac is 0.5675(Acc), N/S=0.5675, inj=0.0638 (MCC). Injector angle is 4.9^o, the 1/2 wave plate was OUT.

Supermendur target P=7.95% (old). Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs Dial angle Calculated angle chi2 comments
angle Polarization % angle Polarization %

9846-9847 90.0 - 0.32uA - - thr=140mV, raster ON

9838-9845 23.0 -84.98+/-0.20 19.0 -82.73+/-0.20 1.0

9848-9855 163.5 -81.71+/-0.20 160.2 -83.11+/-0.20 1.9

Average - -83.34+/-0.15 - -82.92+/-0.15 - Av: -83.13+/-0.15 Dead time not included

9856 163.5 - 0.32uA - - LED: DT=0.6%

9857-9862 33.0 -84.64+/-0.30 29.5 -81.56+/-0.3 1.2

9863-9868 152.5 -81.63+/-0.30 150.6 -83.11+/-0.3 1.3

9857 - - - - - EPICS BPM values (no other data)

Supermendur target P=7.95% (old). Target Angles and Beam Polarizations. The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The error is statistical only.
runs	Dial angle	Calculated angle	chi2	comments
angle	Polarization %	angle	Polarization %
9846-9847	90.0	-	0.32uA	-	-	thr=140mV, raster ON
9838-9845	23.0	-84.98+/-0.20	19.0	-82.73+/-0.20	1.0
9848-9855	163.5	-81.71+/-0.20	160.2	-83.11+/-0.20	1.9
Average	-	-83.34+/-0.15	-	-82.92+/-0.15	-	Av: -83.13+/-0.15 Dead time not included
9856	163.5	-	0.32uA	-	-	LED: DT=0.6%
9857-9862	33.0	-84.64+/-0.30	29.5	-81.56+/-0.3	1.2
9863-9868	152.5	-81.63+/-0.30	150.6	-83.11+/-0.3	1.3
9857	-	-	-	-	-	EPICS BPM values (no other data)

The full information is given here .

Fitting the measurements at 4 target angles (see the plot).
The final results:
Pz=-83.00 +/- 0.15(stat) +/- 2.4(syst-prelim) (1/2 wave plate OUT, 4.9^o Wien angle) (dead time correction DONE, assumed to be about 0.3%)

15 September 2001 16:30-??:??.

Spin dance. The beam energy is 5.739 (accel), one linac is 0.5675(Acc), N/S=0.5675, inj=0.0638 (MCC). Injector angle is 4.9^o, the 1/2 wave plate was OUT.
Arc energy: 5728.1±1
ep - energy: 5727.0±?
Tiefenback: 5727.0±2

Injector: one laser is used in RF mode. Running with Compton.

Supermendur acceptance is about ±15^o? The error is statistical only.
runs angle Polarization
9870
9871
9872
9873
9885-9886 10.0
9876-9883
9888-9894
Average
9896
9898-9899
9897
9900-9901
9902
9904-9905
9903
9885-9886 105.
9912-9913
9914-9919
Average
9920
9921
9922
9923
9924
9925
9926
9927
9936-9937
9929-9934
9938-9943
Average
9935
9950-9951
9952-9957
9944-9949
Average
9965-9968 -60.
9959-9964
9969-9974
Average
9982-9983 -87.
9976-9981
9984-9989
Average
10002-10003 -30.
9990-9993
9994-10001
10005-10012
10013-10016
Average
10004
10018
10019
10021
10020
10022
10023
10025
10024
10026
10027
10029
10028
10030
10031
10033
10032
10035-10040 10.
10041-10046 10.
10047-10052 10.
10053-10058 10.
10060-10065 10.
10066-10071 10.
target P=7.95% (old). Target Angles and Beam Polarizations. The theta and the mean analysing power is 0.76. on> rowspan=2> Wien^o Dial angle Calculated angle chi2 comments % angle Polarization % 10.0 - - - - - EPICS start non-Moller - - - - - EPICS beam centered - - - - - EPICS beam centered + Moller quads - - - - - EPICS beam centered + Moller quads + dipole 90.0 - 0.34µA - - thr=120mV, raster ON 23.0 -84.58±0.19 19.4 -82.54±0.19 1.0 - 163.5 -81.18±0.19 160.5 -82.57±0.19 1.4 - - -82.88±0.14 - -82.55±0.14 - Av: -82.72±0.14 Dead time not included 163.5 - 0.34µA - - LED: DT=0.6% 163.5 -80.65±0.16 1.52µA - - - 163.5 - 1.52µA - - LED: DT=2.7% 163.5 -81.77±0.17 0.82µA - - - 163.5 - 0.83µA - - LED: DT=1.4% 163.5 -79.95±0.14 1.95µA - - - 163.5 - 1.95µA - - LED: DT=3.5% 90.0 - 0.29µA - - thr=120mV, raster ON 23.0 3.47±0.21 19.4 3.39±0.21 3.0 - 163.5 12.30±0.20 160.6 12.50±0.20 3.2 - - 7.89±0.16 - 7.95±0.16 - Av: 7.92±0.16 Dead time not included 163.5 - 0.29µA - - LED: DT=0.55% 90.0 - 0.29µA - - BCM calibration 90.0 - 0.15µA - - BCM calibration 90.0 - 0.50µA - - BCM calibration 90.0 - 0.93µA - - BCM calibration 90.0 - 2.00µA - - BCM calibration 90.0 - 3.12µA - - BCM calibration 90.0 - 4.05µA - - BCM calibration, EPICS BPM 70. 90.0 - 0.30µA - - thr=120mV, raster ON 23.0 -45.59±0.20 19.4 -44.49±0.20 32. - 163.5 -35.21±0.20 160.6 -35.79±0.20 2.6 - - -40.40±0.16 - -40.14±0.16 - Av: -40.27±0.16 Dead time not included 90.0 - 04.0µA - - EPICS BPM 38. 90.0 - 0.30µA - - thr=120mV, raster ON 23.0 -76.27±0.21 19.4 -74.43±0.21 2.6 - 163.5 -68.77±0.21 160.6 -69.91±0.21 0.7 - - -72.52±0.16 - -72.17±0.16 - Av: -72.34±0.16 Dead time not included 90.0 - 0.30µA - - thr=120mV, raster ON 23.0 -22.57±0.20 19.4 -22.03±0.20 1.3 - 163.5 -28.15±0.20 160.6 -28.62±0.20 0.4 - - -25.36±0.16 - -25.32±0.16 - Av: -25.34±0.16 Dead time not included 90.0 - 0.30µA - - thr=120mV, raster ON 23.0 14.29±0.20 19.4 13.95±0.20 0.3 - 163.5 7.44±0.20 160.6 7.56±0.20 2.1 - - 10.87±0.16 - 10.75±0.16 - Av: 10.81±0.16 Dead time not included 90.0 - 0.30µA - - thr=120mV, raster ON 23.0 -64.12±0.21 19.1 -62.46±0.21 5.1 - 33.5 -62.58±0.22 30.35 -60.47±0.22 1.4 - 153.0 -64.57±0.20150.7 -65.97±0.20 1.1 - 163.5 -62.65±0.22160.5 -63.72±0.22 0.35 - - -63.38±0.17 - -63.39±0.17 - Av: -63.24±0.17 Dead time not included 90.0 - 4.0µA - - EPICS BPM 90.0 - 0.29µA - - BCM linearity, normal 90.0 - 0.29µA - - BCM linearity, left arm accid instead of arm R 90.0 - 0.14µA - - BCM linearity, normal 90.0 - 0.14µA - - BCM linearity, left arm accid instead of arm R 90.0 - 0.53µA - - BCM linearity, normal 90.0 - 0.53µA - - BCM linearity, left arm accid instead of arm R 90.0 - 1.00µA - - BCM linearity, normal 90.0 - 1.00µA - - BCM linearity, left arm accid instead of arm R 90.0 - 2.00µA - - BCM linearity, normal 90.0 - 2.00µA - - BCM linearity, left arm accid instead of arm R 90.0 - 3.00µA - - BCM linearity, normal 90.0 - 3.00µA - - BCM linearity, left arm accid instead of arm R 90.0 - 4.00µA - - BCM linearity, normal 90.0 - 4.00µA - - BCM linearity, left arm accid instead of arm R 90.0 - 0.10µA - - BCM linearity, normal 90.0 - 0.10µA - - BCM linearity, left arm accid instead of arm R 23.0 -85.43±0.21 0.30µA - 1.0 narrow slit, RF, laser phase 56^o 23.0 -85.78±0.22 0.30µA - 0.9 narrow slit, RF, laser phase 90^o 23.0 -86.50±0.20 0.30µA - 1.3 narrow slit, RF, laser phase 115^o 23.0 -86.20±0.22 0.30µA - 1.0 narrow slit, DC, laser phase 56^o 23.0 -86.07±0.23 0.30µA - 0.4 narrow slit, DC, laser phase 90^o 23.0 -86.19±0.23 0.30µA - 0.8 narrow slit, DC, laser phase 115^o

Supermendur acceptance is about ±15^o? The error is statistical only.
runs		angle	Polarization
9870
9871
9872
9873
9885-9886	10.0
9876-9883
9888-9894
Average
9896
9898-9899
9897
9900-9901
9902
9904-9905
9903
9885-9886	105.
9912-9913
9914-9919
Average
9920
9921
9922
9923
9924
9925
9926
9927
9936-9937
9929-9934
9938-9943
Average
9935
9950-9951
9952-9957
9944-9949
Average
9965-9968	-60.
9959-9964
9969-9974
Average
9982-9983	-87.
9976-9981
9984-9989
Average
10002-10003	-30.
9990-9993
9994-10001
10005-10012
10013-10016
Average
10004
10018
10019
10021
10020
10022
10023
10025
10024
10026
10027
10029
10028
10030
10031
10033
10032
10035-10040	10.
10041-10046	10.
10047-10052	10.
10053-10058	10.
10060-10065	10.
10066-10071	10.

The full information is given here .

The preliminary results:
P =-82.30±0.15(stat) ± 2.4(syst-prelim) (1/2 wave plate OUT, 10^o Wien angle) (dead time correction DONE, assumed to be about 0.3%, Levchuk effect of 0.5% taken into account)

The dependence of the polarization measured on the Wien filter angle is shown on a plot.