Moeller Polarimeter Raw Results Archives 2008

Run type: 1 - measurement in point, 2 - transverse scan, 3 - longitudinal scan

Beam Polarization: Raw Results 2008

11 April 2008 16:00-20:25. E.Chudakov, V.Gorbenko

The beam energy is 1076MeV(accel), 510MeV(linac), 57.375MeV(injector). Injector angle is 36.703^o, the 1/2 wave plate was OUT.
Injector laser attenuation=140, Slit=16.4. Fast raster was ON.

The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The target angle is 20^o. The error is statistical only.
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Comments
12705-12708	5	1	0.0	1.014/1.385	8.0	65.97+/-0.25	0.93	B.cur=0.5uAmp, Thr=240mV
12709-12710	4	1	0.0	1.660/1.385	8.0	67.55+/-0.34	0.01	-
12711-12712	3	1	0.0	2.303/1.385	8.0	66.29+/-0.29	0.01	-
12713-12714	3	1	0.0	2.303/1.385	8.0	66.34+/-0.37	15.88	B.cur=0.3uAmp
12715-12716	2	1	0.0	2.933/1.385	8.0	66.12+/-0.35	1.73	B.cur=0.16uAmp
Average	2,3,4,5	1	0.0	-	8.0	66.38+/-0.11	3.69	-

The table with detailed information is given here .
The final results:
Pz= 66.38 +/- 0.11(stat) +/- 2.0(syst-prelim) (dead time correction is not included)

30 April 2008 11:30-13:10. E.Chudakov, V.Gorbenko

The beam energy is 1193MeV(accel), 565MeV(linac), 63.562MeV(injector). Injector angle is -40.203^o, the 1/2 wave plate was IN.
Injector laser attenuation=83, Slit=17.7. Fast raster was OFF.

The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The target angle is 20^o. The error is statistical only.
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Comments
12770-12771	5	1	0.0	1.026/1.385	8.0	-66.59+/-0.41	1.93	B.cur=0.5uAmp, Thr=240mV
12772-12773	4	1	0.0	1.658/1.385	8.0	-67.69+/-0.41	4.73	-
12774-12775	3	1	0.0	2.290/1.385	8.0	-66.09+/-0.35	2.20	B.cur=0.3uAmp
12776-12777	2	1	0.0	2.930/1.385	8.0	-66.54+/-0.34	7.17	B.cur=0.3uAmp
Average	2,3,4,5	1	0.0	-	8.0	-66.65+/-0.19	3.57	-

The table with detailed information is given here .
The final results:
Pz= -66.65 +/- 0.19(stat) +/- 2.0(syst-prelim) (dead time correction is not included)

16 May 2008 15:00-17:50. E.Chudakov, V.Gorbenko

The beam energy is 1193MeV(accel), 555MeV(linac), 63.562MeV(injector). Injector angle is -33.73^o, the 1/2 wave plate was IN.
Injector laser attenuation=80, Slit=-0.98?. Fast raster was OFF.

The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The target angle is 20^o. The error is statistical only.
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Comments
12784-12785	5	1	0.0	1.026/1.394	8.0	-67.85+/-0.37	1.14	B.cur=0.5uAmp, Thr=240mV
12786-12789	4	1	0.0	1.656/1.389	8.0	-68.58+/-0.37	0.51	-
12790-12791	3	1	0.0	2.289/1.389	8.0	-67.20+/-0.31	0.84	-
12792-12793	2	1	0.0	2.930/1.387	8.0	-67.93+/-0.35	3.35	-
Average	2,3,4,5	1	0.0	-	8.0	-67.95+/-0.16	1.85	-

The table with detailed information is given here .
The final results:
Pz= -67.95 +/- 0.16(stat) +/- 2.0(syst-prelim) (dead time correction is not included)

22 May 2008 00:30-2:50. E.Chudakov, V.Gorbenko

The beam energy is 1193MeV(accel), 555MeV(linac), 63.562MeV(injector). Injector angle is -13.73^o, the 1/2 wave plate was IN.
Injector laser attenuation=120, Slit=15.465. Fast raster was ON.

The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The target angle is 20^o. The error is statistical only.
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Comments
12800-12801	5	1	0.0	1.026/1.394	8.0	-83.51+/-0.45	0.29	B.cur=0.4uAmp, Thr=240mV
12802-12803	4	1	0.0	1.656/1.398	8.0	-83.38+/-0.40	3.28	-
12804-12805	3	1	0.0	2.286/1.398	8.0	-82.12+/-0.32	0.45	-
12806-12807	3	1	0.0	2.286/1.398	8.0	-	-	Bleedthrough from Hall C
12808-12809	2	1	0.0	2.930/1.392	8.0	-83.93+/-0.34	3.06	B.cur=0.17uAmp
Average	2,3,4,5	1	0.0	-	8.0	-83.05+/-0.18	2.28	-

Bleedthrough from Hall C 0.4uAmp/73uAmp(Hall C) ~0.5*10-3

The table with detailed information is given here .
The final results:
Pz= -83.05 +/- 0.18(stat) +/- 2.0(syst-prelim) (dead time correction is not included)

26 May 2008 20:00-00:30. E.Chudakov, V.Gorbenko

Beam spot moving

The beam energy is 1193MeV(accel), 555MeV(linac), 63.562MeV(injector). Injector angle is -13.536^o, the 1/2 wave plate was IN.
Injector laser attenuation=79, Slit=19.6. Fast raster was ON.

The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The target angle is 20^o. The error is statistical only.
Runs Target Type T.Pos. Encoder BOP Polarization % Chi2 Comments

12811-12812 5 1 0.0 1.026/1.389 8.0 -85.35+/-0.45 0.29 B.cur=0.5uAmp, Thr=250mV

12813 4 1 0.0 1.656/1.389 8.0 -84.72+/-0.55 - -

12814 4 1 0.0 1.656/1.389 8.0 - - 2 hours accelerator down

- 4 1 0.0 1.656/1.389 8.0 - - Target was moved out

12815-12816 4 1 0.0 1.656/1.389 8.0 -82.34+/-0.40 1.29 -

12817-12818 3 1 0.0 2.286/1.389 8.0 -83.70+/-0.32 1.50 -

12819-12820 3 1 0.0 2.286/1.389 8.0 -83.90+/-0.48 1.07 B.cur=0.22uAmp

12821-12822 2 1 0.0 2.926/1.389 8.0 -83.50+/-0.35 0.90 B.cur=0.22uAmp

12823-12824 5 1 0.0 1.030/1.389 8.0 -84.15+/-0.41 0.22 B.cur=0.5uAmp

12825 5 1 0.0 1.030/1.389 8.0 - - Laser OFF. Beam spot moving

12826-12827 5 1 0.0 1.028/1.389 8.0 -83.76+/-0.42 0.20 B.cur=0.5uAmp

12828 4 1 0.0 1.655/1.389 8.0 -82.83+/-0.42 - -

12829-12830 4 1 0.0 1.656/1.389 8.0 - - Wrong quads settings

Average 2,3,4,5 1 0.0 - 8.0 -83.68+/-0.13 5.28 Before beam spot moving

Average 4,5 1 0.0 - 8.0 -83.76+/-0.30 0.10 After beam spot moving

The theta acceptance is about +/-15^o? and the mean analysing power is 0.76. The target angle is 20^o. The error is statistical only.
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Comments
12811-12812	5	1	0.0	1.026/1.389	8.0	-85.35+/-0.45	0.29	B.cur=0.5uAmp, Thr=250mV
12813	4	1	0.0	1.656/1.389	8.0	-84.72+/-0.55	-	-
12814	4	1	0.0	1.656/1.389	8.0	-	-	2 hours accelerator down
-	4	1	0.0	1.656/1.389	8.0	-	-	Target was moved out
12815-12816	4	1	0.0	1.656/1.389	8.0	-82.34+/-0.40	1.29	-
12817-12818	3	1	0.0	2.286/1.389	8.0	-83.70+/-0.32	1.50	-
12819-12820	3	1	0.0	2.286/1.389	8.0	-83.90+/-0.48	1.07	B.cur=0.22uAmp
12821-12822	2	1	0.0	2.926/1.389	8.0	-83.50+/-0.35	0.90	B.cur=0.22uAmp
12823-12824	5	1	0.0	1.030/1.389	8.0	-84.15+/-0.41	0.22	B.cur=0.5uAmp
12825	5	1	0.0	1.030/1.389	8.0	-	-	Laser OFF. Beam spot moving
12826-12827	5	1	0.0	1.028/1.389	8.0	-83.76+/-0.42	0.20	B.cur=0.5uAmp
12828	4	1	0.0	1.655/1.389	8.0	-82.83+/-0.42	-	-
12829-12830	4	1	0.0	1.656/1.389	8.0	-	-	Wrong quads settings
Average	2,3,4,5	1	0.0	-	8.0	-83.68+/-0.13	5.28	Before beam spot moving
Average	4,5	1	0.0	-	8.0	-83.76+/-0.30	0.10	After beam spot moving

The table with detailed information is given here .
The final results:
Before beam spot moving: Pz= -83.68 +/- 0.13(stat) +/- 2.0(syst-prelim) (dead time correction is not included)
After beam spot moving: Pz= -83.76 +/- 0.30(stat) +/- 2.0(syst-prelim) (dead time correction is not included)

E-06-010: Transversity experiment

02 November 2008 18:00-23:00. E.Chudakov, O.Glamazdin

The beam energy is 1232MeV (accel) 583.5MeV(linac).
Injector angle is 0.2^o, the 1/2 wave plate was OUT. Injector laser attenuation=80, Slit=16.8. Fast raster was ON.

The theta acceptance is about +/-11^o and the mean analysing power is 0.762. The target angle is 20.5^o. The error is statistical only. BPM01Y position is included
Runs Target Type T.Pos. Encoder BOP Polarization % Chi2 Comments

12853-12857 5 1 0.0 1.032/1.392 8.0 89.55+/-0.36 1.46 B.cur=0.33uAmp, Thr=250mV

12858-12861 4 1 0.0 1.663/1.392 8.0 87.74+/-0.42 1.89 B.cur=0.32uAmp

12862-12865 3 1 0.0 2.293/1.397 8.0 89.22+/-0.42 0.26 B.cur=0.31uAmp

12866-12869 2 1 0.0 2.921/1.390 8.0 86.88+/-0.30 2.49 B.cur=0.32uAmp

12870-12873 2 1 0.0 2.921/1.392 8.0 87.70+/-0.39 0.17 B.cur=0.2uAmp

Average 2 1 0.0 2.921/1.392 8.0 87.18+/-0.24 0.17 12866-12873

Average 4,5 1 - - - 88.72+/-0.27 1.89 -

Average 2,3,4,5 1 - - - 88.09+/-0.17 1.89 -

The theta acceptance is about +/-11^o and the mean analysing power is 0.762. The target angle is 20.5^o. The error is statistical only. BPM01Y position is included
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Comments
12853-12857	5	1	0.0	1.032/1.392	8.0	89.55+/-0.36	1.46	B.cur=0.33uAmp, Thr=250mV
12858-12861	4	1	0.0	1.663/1.392	8.0	87.74+/-0.42	1.89	B.cur=0.32uAmp
12862-12865	3	1	0.0	2.293/1.397	8.0	89.22+/-0.42	0.26	B.cur=0.31uAmp
12866-12869	2	1	0.0	2.921/1.390	8.0	86.88+/-0.30	2.49	B.cur=0.32uAmp
12870-12873	2	1	0.0	2.921/1.392	8.0	87.70+/-0.39	0.17	B.cur=0.2uAmp
Average	2	1	0.0	2.921/1.392	8.0	87.18+/-0.24	0.17	12866-12873
Average	4,5	1	-	-	-	88.72+/-0.27	1.89	-
Average	2,3,4,5	1	-	-	-	88.09+/-0.17	1.89	-

The table with detailed information is given here .
For additional information see halog entry 246331
For the beam energy fluctuation see Chart .

The final results:
Pz= (88.09 +/- 0.17(stat) +/- 1.7(syst))%
The plot is given here .

12 November 2008 17:00-20:15. E.Chudakov, O.Glamazdin

The beam energy is 5904MeV(accel), 583.5MeV(linac), 65.6437MeV(injector).
Injector angle is 31.1993^o, the 1/2 wave plate was IN.
Injector Laser attenuation=85, Slit=17. Fast raster was ON.

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o. The error is statistical only. BPM01Y position is included
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs Target Type T.Pos. Encoder BOP Polarization % Chi2 Cor.Polar. % Chi2 Comments

12875-12876 5 1 0.0 1.033/1.392 8.0 HV adjustment - - - B.cur=0.52uAmp, Thr=100mV

12877-12880 5 1 0.0 1.033/1.392 8.0 -75.42+/-0.27 1.43 -80.03 3.16 Threshold=150mV

12881-12884 4 1 0.0 1.656/1.387 8.0 -73.98+/-0.29 0.14 -78.56 0.55 B.cur=0.5uAmp

12885-12888 3 1 0.0 2.288/1.394 8.0 -74.42+/-0.26 1.13 -78.47 1.64 B.cur=0.47uAmp

12889-12892 2 1 0.0 2.918/1.392 8.0 -74.86+/-0.17 0.42 -79.61 1.19 B.cur=0.48uAmp

12893-12896 2 1 0.0 2.918/1.392 8.0 -75.22+/-0.20 1.03 -79.99 - B.cur=0.31uAmp

Average 2 1 - - - -75.01+/-0.13 1.58 -79.77 2.93 -

Average 4,5 1 - - - -84.75+/-0.19 1.89 -79.35 -

Average 2,3,4,5 1 - - - -74.85+/-0.10 1.70 -79.47 2.62 -

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o. The error is statistical only. BPM01Y position is included
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Cor.Polar. %	Chi2	Comments
12875-12876	5	1	0.0	1.033/1.392	8.0	HV adjustment	-	-	-	B.cur=0.52uAmp, Thr=100mV
12877-12880	5	1	0.0	1.033/1.392	8.0	-75.42+/-0.27	1.43	-80.03	3.16	Threshold=150mV
12881-12884	4	1	0.0	1.656/1.387	8.0	-73.98+/-0.29	0.14	-78.56	0.55	B.cur=0.5uAmp
12885-12888	3	1	0.0	2.288/1.394	8.0	-74.42+/-0.26	1.13	-78.47	1.64	B.cur=0.47uAmp
12889-12892	2	1	0.0	2.918/1.392	8.0	-74.86+/-0.17	0.42	-79.61	1.19	B.cur=0.48uAmp
12893-12896	2	1	0.0	2.918/1.392	8.0	-75.22+/-0.20	1.03	-79.99	-	B.cur=0.31uAmp
Average	2	1	-	-	-	-75.01+/-0.13	1.58	-79.77	2.93	-
Average	4,5	1	-	-	-	-84.75+/-0.19	1.89	-79.35	-
Average	2,3,4,5	1	-	-	-	-74.85+/-0.10	1.70	-79.47	2.62	-

The MCC procedure did not set the Moller quads correctly. Perhaps it fails at this high energy.
They were set manually. The dipole deflected the beam to Y=-7mm in 4B. MCC lifted it a bit.
The table with detailed information is given here .
For additional information see halog entry 248427
For the beam energy fluctuation see Chart1 , Chart2 and Chart3 .
Correction of the Moller results on a beam energy fluctuation (HALLA:p) was done run-by-run. Run-by-run information see in table an on plot .

The final results:
Pz=(-79.47 +/- 0.10(stat) +/- 2.0(syst))%
The plot is given here .

17 November 2008 14:30-19:30. E.Chudakov, O.Glamazdin

The beam energy is 5904MeV(accel), 583.5MeV(linac), 65.6437MeV(injector).
Injector angle is 31.1993^o, the 1/2 wave plate was IN.
Injector Laser attenuation=109, Slit=15.2. Fast raster was ON.

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o. The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs Target Type T.Pos. Encoder BOP Polarization % Chi2 Cor.Polar. % Chi2 Comments

12899-12902 5 1 0.0 1.035/1.390 8.0 -76.57+/-0.34 6.47 -80.30 3.26 B.cur=0.48uAmp Thr=150mV

12903-12906 4 1 0.0 1.666/1.392 8.0 -76.08+/-0.28 0.75 -79.28 1.71 B.cur=0.47uAmp Thr=150mV

12907-12910 3 1 0.0 2.296/1.397 8.0 -73.97+/-0.27 9.08 -78.73 1.66 B.cur=0.48uAmp Thr=150mV

12911-12914 3 1 0.0 2.291/1.392 8.0 -72.78+/-0.27 1.43 -78.69 3.31 B.cur=0.45uAmp Thr=250mV

12915-12918 5 1 0.0 1.038/1.390 8.0 -74.19+/-0.35 3.14 -80.07 1.08 B.cur=0.45uAmp Thr=250mV

12919-12922 5 1 0.0 1.038/1.390 8.0 -74.31+/-0.42 2.16 -80.16 2.95 B.cur=0.43uAmp Thr=350mV

12923-12926 5 1 0.0 1.038/1.390 8.0 -73.87+/-0.31 1.21 -80.09 1.17 B.cur=0.45uAmp Thr=150mV

12927-12929 5 1 0.0 1.033/1.397 8.0 -73.03+/-0.39 2.62 -79.24 2.03 B.cur=0.43uAmp Thr=150mV

12930-12933 2 1 0.0 2.921/1.392 8.0 -73.01+/-0.20 2.84 -79.81 2.74 B.cur=0.43uAmp Thr=250mV

Average 5 1 0.0 2.921/1.392 8.0 -74.48+/-0.16 2.84 -80.29 2.74 B.cur=0.43uAmp Thr=250mV

Average 3 1 0.0 2.921/1.392 8.0 -73.38+/-0.19 2.84 -78.71 2.74 B.cur=0.43uAmp Thr=250mV

Average 4,5 1 0.0 2.921/1.392 8.0 -74.87+/-0.14 2.84 -80.04 2.74 -

Average 2,3,4,5 1 - - - -74.03+/-0.10 7.11 -79.63 2.91 -

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o. The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Cor.Polar. %	Chi2	Comments
12899-12902	5	1	0.0	1.035/1.390	8.0	-76.57+/-0.34	6.47	-80.30	3.26	B.cur=0.48uAmp Thr=150mV
12903-12906	4	1	0.0	1.666/1.392	8.0	-76.08+/-0.28	0.75	-79.28	1.71	B.cur=0.47uAmp Thr=150mV
12907-12910	3	1	0.0	2.296/1.397	8.0	-73.97+/-0.27	9.08	-78.73	1.66	B.cur=0.48uAmp Thr=150mV
12911-12914	3	1	0.0	2.291/1.392	8.0	-72.78+/-0.27	1.43	-78.69	3.31	B.cur=0.45uAmp Thr=250mV
12915-12918	5	1	0.0	1.038/1.390	8.0	-74.19+/-0.35	3.14	-80.07	1.08	B.cur=0.45uAmp Thr=250mV
12919-12922	5	1	0.0	1.038/1.390	8.0	-74.31+/-0.42	2.16	-80.16	2.95	B.cur=0.43uAmp Thr=350mV
12923-12926	5	1	0.0	1.038/1.390	8.0	-73.87+/-0.31	1.21	-80.09	1.17	B.cur=0.45uAmp Thr=150mV
12927-12929	5	1	0.0	1.033/1.397	8.0	-73.03+/-0.39	2.62	-79.24	2.03	B.cur=0.43uAmp Thr=150mV
12930-12933	2	1	0.0	2.921/1.392	8.0	-73.01+/-0.20	2.84	-79.81	2.74	B.cur=0.43uAmp Thr=250mV
Average	5	1	0.0	2.921/1.392	8.0	-74.48+/-0.16	2.84	-80.29	2.74	B.cur=0.43uAmp Thr=250mV
Average	3	1	0.0	2.921/1.392	8.0	-73.38+/-0.19	2.84	-78.71	2.74	B.cur=0.43uAmp Thr=250mV
Average	4,5	1	0.0	2.921/1.392	8.0	-74.87+/-0.14	2.84	-80.04	2.74	-
Average	2,3,4,5	1	-	-	-	-74.03+/-0.10	7.11	-79.63	2.91	-

The table with detailed information is given here .
For additional information see halog entry 249426
For the beam energy fluctuation see Chart .
Correction of the Moller results on a beam energy fluctuation (HALLA:p) was done run-by-run. Run-by-run information see in table an on plot .

The final results:

Pz=(-79.63 +/- 0.10(stat) +/- 2.0(syst))%
The plot is given here .

20 November 2008 23:00 19 November - 03:45. E.Chudakov, O.Glamazdin

The beam energy is 5904MeV(accel), 583.5MeV(linac), 65.6437MeV(injector).
Injector angle is 31.1993^o, the 1/2 wave plate was IN.
Injector Laser attenuation=103, Slit=15.75. Fast raster was ON.

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o. The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs Target Type T.Pos. Encoder BOP Polarization % Chi2 Cor.Polar. % Chi2 Comments

12935-12938 5 1 0.0 1.039/1.390 8.0 -74.24+/-0.33 0.93 -77.51 5.68 B.cur=0.41uAmp Thr=50mV

12939-12942 5 1 0.0 1.039/1.390 8.0 -75.78+/-0.33 1.23 -78.58 2.18 Thr=150mV

12943-12946 5 1 0.0 1.039/1.390 8.0 -74.50+/-0.37 0.23 -77.47 0.87 Thr=300mV

12947 5 1 0.0 1.039/1.390 8.0 - - - - Hall A laser OFF

12948 5 1 0.0 1.039/1.390 8.0 -70.25+/-0.34 - -74.75 - Thr=400mV

12949-12952 5 1 0.0 1.039/1.390 8.0 -74.74+/-0.40 1.34 -78.06 0.63 Thr=350mV

12954-12955 5 1 0.0 1.039/1.390 8.0 -73.28+/-0.55 1.58 -74.65 0.50 Thr=300mV

12956 5 1 0.0 1.039/1.390 8.0 - - - - Delay Ch4,5 18->14 Thr=300mV

Average 5 1 0.0 1.039/1.390 8.0 -74.46+/-0.20 1.06 -77.30 4.27 Thr=300

12957-12960 4 1 0.0 1.661/1.392 8.0 -73.37+/-0.38 0.82 -76.15 2.33 Delay back to 18 Thr=300mV

12961-12964 3 1 0.0 2.291/1.392 8.0 -73.55+/-0.33 2.97 -75.57 1.00 Thr=300mV

12965-12968 2 1 0.0 2.923/1.389 8.0 -74.32+/-0.23 0.44 -77.47 0.17 Thr=300mV

Average 4,5 1 0.0 2.921/1.392 8.0 -74.22+/-0.18 - -77.05 2.74 -

Average 2,3,4,5 1 - - - -74.15+/-0.13 1.60 -76.94 4.24 Thr=300

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o. The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Cor.Polar. %	Chi2	Comments
12935-12938	5	1	0.0	1.039/1.390	8.0	-74.24+/-0.33	0.93	-77.51	5.68	B.cur=0.41uAmp Thr=50mV
12939-12942	5	1	0.0	1.039/1.390	8.0	-75.78+/-0.33	1.23	-78.58	2.18	Thr=150mV
12943-12946	5	1	0.0	1.039/1.390	8.0	-74.50+/-0.37	0.23	-77.47	0.87	Thr=300mV
12947	5	1	0.0	1.039/1.390	8.0	-	-	-	-	Hall A laser OFF
12948	5	1	0.0	1.039/1.390	8.0	-70.25+/-0.34	-	-74.75	-	Thr=400mV
12949-12952	5	1	0.0	1.039/1.390	8.0	-74.74+/-0.40	1.34	-78.06	0.63	Thr=350mV
12954-12955	5	1	0.0	1.039/1.390	8.0	-73.28+/-0.55	1.58	-74.65	0.50	Thr=300mV
12956	5	1	0.0	1.039/1.390	8.0	-	-	-	-	Delay Ch4,5 18->14 Thr=300mV
Average	5	1	0.0	1.039/1.390	8.0	-74.46+/-0.20	1.06	-77.30	4.27	Thr=300
12957-12960	4	1	0.0	1.661/1.392	8.0	-73.37+/-0.38	0.82	-76.15	2.33	Delay back to 18 Thr=300mV
12961-12964	3	1	0.0	2.291/1.392	8.0	-73.55+/-0.33	2.97	-75.57	1.00	Thr=300mV
12965-12968	2	1	0.0	2.923/1.389	8.0	-74.32+/-0.23	0.44	-77.47	0.17	Thr=300mV
Average	4,5	1	0.0	2.921/1.392	8.0	-74.22+/-0.18	-	-77.05	2.74	-
Average	2,3,4,5	1	-	-	-	-74.15+/-0.13	1.60	-76.94	4.24	Thr=300

The table with detailed information is given here .
Several systematic studies were done to look for the jumps in polarization observed in the previous measurement, which later turned out to be made in the dispersive mode of the beam.

For additional information see halog entry 249874
For the beam energy fluctuation see Chart .
Correction of the Moller results on a beam energy fluctuation (HALLA:p) was done run-by-run. Run-by-run information see in table an on plot .

The final results:
Pz=(-76.94 +/- 0.13(stat) +/- 2.0(syst))%
The plot is given here .

28 November 2008 10:58 - 14:40. E.Chudakov, O.Glamazdin

The beam energy is 5904MeV(accel), 583.5MeV(linac), 65.6437MeV(injector).
Injector angle is 31.1993^o, the 1/2 wave plate was OUT.
Injector Laser attenuation=170, Slit=15.5. Fast raster was OFF.

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o.
The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs Target Type T.Pos. Encoder BOP Polarization % Chi2 Cor.Polar. % Chi2 Comments

12971-12974 5 1 0.0 1.031/1.392 8.0 81.22+/-0.36 0.89 79.92 0.46 B.cur=0.44uAmp Thr=300mV

12975-12980 4 1 0.0 1.661/1.394 8.0 81.34+/-0.27 0.52 79.88 0.28 B.cur=0.45uAmp

12981-12984 3 1 0.0 2.288/1.394 8.0 78.08+/-0.30 0.32 76.56 1.53 B.cur=0.45uAmp

12985-12988 2 1 0.0 2.923/1.390 8.0 80.67+/-0.19 0.92 77.41 0.68 B.cur=0.43uAmp

12989-12990 5 1 0.0 1.030/1.393 8.0 81.23+/-0.52 0.33 79.11 0.01 B.cur=0.44uAmp

12991-12994 3 1 0.0 2.291/1.390 8.0 78.65+/-0.30 1.59 77.80 1.50 B.cur=0.67uAmp

12995-12996 5 1 0.0 1.035/1.390 8.0 80.04+/-0.42 0.01 78.96 0.01 B.cur=0.65uAmp

Average 3 1 - - - 78.08+/-0.21 1.05 76.62 0.57 -

Average 5 1 - - - 80.79+/-0.24 1.05 79.38 0.57 -

Average 4,5 1 - - - 81.03+/-0.18 1.05 79.60 0.57 -

Average 2,3,4,5 1 - - - 80.26+/-0.11 4.74 78.03 6.05 -

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o.
The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Cor.Polar. %	Chi2	Comments
12971-12974	5	1	0.0	1.031/1.392	8.0	81.22+/-0.36	0.89	79.92	0.46	B.cur=0.44uAmp Thr=300mV
12975-12980	4	1	0.0	1.661/1.394	8.0	81.34+/-0.27	0.52	79.88	0.28	B.cur=0.45uAmp
12981-12984	3	1	0.0	2.288/1.394	8.0	78.08+/-0.30	0.32	76.56	1.53	B.cur=0.45uAmp
12985-12988	2	1	0.0	2.923/1.390	8.0	80.67+/-0.19	0.92	77.41	0.68	B.cur=0.43uAmp
12989-12990	5	1	0.0	1.030/1.393	8.0	81.23+/-0.52	0.33	79.11	0.01	B.cur=0.44uAmp
12991-12994	3	1	0.0	2.291/1.390	8.0	78.65+/-0.30	1.59	77.80	1.50	B.cur=0.67uAmp
12995-12996	5	1	0.0	1.035/1.390	8.0	80.04+/-0.42	0.01	78.96	0.01	B.cur=0.65uAmp
Average	3	1	-	-	-	78.08+/-0.21	1.05	76.62	0.57	-
Average	5	1	-	-	-	80.79+/-0.24	1.05	79.38	0.57	-
Average	4,5	1	-	-	-	81.03+/-0.18	1.05	79.60	0.57	-
Average	2,3,4,5	1	-	-	-	80.26+/-0.11	4.74	78.03	6.05	-

The table with detailed information is given here .
The beam strongly zig-zagged in Y (see entry 251185 ).
For the beam energy fluctuation see Chart1 and Chart2 .
The energy lock on Hall C, pulsed, was used. At 0.44 �A in Hall A the "HALLA:p" and "ARC9:p" energy measurement is not very reliable and depends on the beam current (see the strip chart). On the other hand, the ARC-2 measurement "ARC2:p" measurement was stable. The regular value of "HALLA:p" obtained at higher current with the Hall A energy lock is 5892 MeV.
For additional information see halog entry 249874 .

Correction of the Moller results on a beam energy fluctuation (HALLA:p) was done run-by-run. Run-by-run information see in table an on plot .

The final results:
Pz=(78.03 +/- 0.11(stat) +/- 2.0(syst))%
The plot is given here .

08 December 2008 14:00 - 19:30. E.Chudakov, O.Glamazdin

The beam energy is 5904MeV(accel), 583.5MeV(linac), 65.6437MeV(injector).
Injector angle is 31.1993^o, the 1/2 wave plate was OUT.
Injector Laser attenuation=300, Slit=15.75. Fast raster was ON.

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o.
The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Cor.Polar. %	Chi2	Comments
13001-13004	5	1	0.0	1.035/1.394	8.0	53.68+/-0.30	0.15	53.87	0.22	B.cur=0.65uAmp Thr=300mV
13005-13008	4	1	0.0	1.661/1.392	8.0	53.98+/-0.27	0.35	54.24	0.60	B.cur=0.65uAmp
13009	4	1	0.0	1.661/1.394	8.0	-	-			Hall A laser OFF
13010-13013	2	1	0.0	2.918/1.397	8.0	53.79+/-0.13	0.76	54.26	1.16	B.cur=0.5uAmp
Average	4,5	1	-	-	-	53.85+/-0.20	0.24	54.07	0.40	-
Average	2,4,5	1	-	-	-	53.81+/-0.11	0.44	54.10	0.60	-

The table with detailed information is given here .
The beam tune: the quads were changed, then the beam was sent. It was at Y=1.5mm in 1H01,4A and 4B.
The beam DID NOT move after the quad change! Perhaps 1.5 mm is not much at this energy.
The energy lock on Hall C, pulsed, was used.
For the beam energy fluctuation see Chart
For additional information see halog entry 252564 .

Correction of the Moller results on a beam energy fluctuation (HALLA:p) was done run-by-run. Run-by-run information see in table an on plot .

The final results:
Pz=(54.10 +/- 0.11(stat) +/- 2.0(syst))%
Low polarization was explained by injector problem.
The plot is given here .

09 December 2008 17:00 - 20:00. E.Chudakov, O.Glamazdin

The beam energy is 5904MeV(accel), 583.5MeV(linac), 65.6437MeV(injector).
Injector angle is 31.1993^o, the 1/2 wave plate was OUT.
Injector Laser attenuation=300, Slit=15.8. Fast raster was ON.

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o.
The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Cor.Polar. %	Chi2	Comments
13015-13018	5	1	0.0	1.035/1.397	8.0	79.47+/-0.27	2.57	80.08	2.61	Thr=300mV B.cur=0.48uAmp
13019-13022	4	1	0.0	1.661/1.397	8.0	79.24+/-0.31	1.79	79.85	1.81	B.cur=0.48uAmp
13023-13026	3	1	0.0	2.296/1.392	8.0	77.41+/-0.26	2.11	77.40	73.79	B.cur=0.48uAmp
13027-13030	2	1	0.0	2.921/1.392	8.0	79.08+/-0.17	3.55	79.69	1.92	B.cur=0.48uAmp
13031-13034	5	1	0.0	1.040/1.390	8.0	78.71+/-0.27	1.04	78.95	0.62	B.cur=0.78uAmp
Average	5	1	0.0	1.040/1.390	8.0	78.78+/-0.19	1.04	79.21	0.62	B.cur=0.78uAmp
Average	4,5	1	-	-	-	78.91+/-0.16	1.89	79.38	0.23	-
Average	2,3,4,5	1	-	-	-	78.65+/-0.10	1.89	79.08	0.23	-

The table with detailed information is given here .
The energy lock on Hall C, pulsed, was used.
For the beam energy fluctuation see Chart .
For additional information see halog entry 252767 .
The bean energy fluctuation can not be corrected for Tragets 2 and 3 (runs 13023-13030) due to that the targets 2 and 3 are excluded from the average.

Correction of the Moller results on a beam energy fluctuation (HALLA:p) was done run-by-run. Run-by-run information see in table an on plot .

The final results:
Pz=(79.08 +/- 0.10(stat) +/- 2.0(syst))%
The plot is given here .

17 December 2008 8:30 - 12:10. E.Chudakov, O.Glamazdin

The beam energy is 5904MeV(accel), 583.5MeV(linac), 65.6437MeV(injector).
Injector angle is 31.1993^o, the 1/2 wave plate was IN.
Injector Laser attenuation=120, Slit=15.5. Fast raster was ON.

The theta acceptance is about +/-14^o and the mean analysing power is 0.760. The target angle is 20.5^o.
The error is statistical only. BPM01Y position is included.
Cor.Polar. - Polarization corrected on beam energy fluctuation (HALLA:p)
Runs	Target	Type	T.Pos.	Encoder	BOP	Polarization %	Chi2	Cor.Polar. %	Chi2	Comments
13039-13042	5	1	0.0	1.031/1.390	8.0	-79.99+/-0.36	1.07	-78.90	0.94	Thr=300mV B.cur=0.45uAmp
13043-13046	4	1	0.0	1.656/1.390	8.0	-79.31+/-0.36	1.50	-78.09	1.27	B.cur=0.45uAmp
13047-13050	3	1	0.0	2.288/1.397	8.0	-78.62+/-0.33	1.49	-77.47	1.32	B.cur=0.45uAmp
13051-13052	2	1	0.0	2.911/1.392	8.0	-80.09+/-0.24	0.67	-79.03	0.68	B.cur=0.45uAmp
Average	4,5	1	-	-	-	-79.65+/-0.25	1.31	-78.50	1.30	-
Average	2,3,4,5	1	-	-	-	-79.59+/-0.18	1.31	-78.47	1.30	-

The table with detailed information is given here .
For additional information see halog entry 253732 .
The energy lock on Hall C, pulsed, was used.
For the beam energy fluctuation see Chart .

Correction of the Moller results on a beam energy fluctuation (HALLA:p) was done run-by-run. Run-by-run information see in table an on plot .

The final results:
Pz=(-78.47 +/- 0.18(stat) +/- 2.0(syst))%
The plot is given here .