Polarimetry/H-jet/Run15pA

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Final Results

Beam polarizations in Run 15. Chi^2_red values are from the ratio of beam and target asymmetries as function of energy (6 bins).

All asymmetries for the beams and the jet target are calculated with the proper-flip (square-root) method in six bins from 1 MeV to 7 MeV. Punch-through hits are removed from the analysis. Asymmetries are calculated for inclusive and signal bunches (abort gaps are not used for the respective opposite jet asymmetries). The asymmetries are then fully background corrected before averaging over inclusive and signal bunches. For the p+A part of Run 15, the beam polarization is determined for each fill from the ratio of the background corrected and averaged asymmetries (red points in the figure above). The Chi2 distributions for a constant ratio of beam/target asymmetries are included in the figure above.

p+Au

Fill Pol(blue)
19020 0.5858 ± 0.0382
19024 0.6719 ± 0.0416
19026 0.5937 ± 0.0734
19028 0.6235 ± 0.0429
19029 0.6769 ± 0.0450
19032 0.7486 ± 0.0517
19033 0.6329 ± 0.0466
19035 0.6493 ± 0.0435
19037 0.5934 ± 0.0648
19038 0.6559 ± 0.0754
19039 0.6162 ± 0.0453
19040 0.6166 ± 0.0433
19041 0.6049 ± 0.0439
19043 0.5817 ± 0.0425
19046 0.6007 ± 0.1377
19049 0.5617 ± 0.0371
19050 0.5181 ± 0.0398
19052 0.6045 ± 0.0412
19053 0.6388 ± 0.0602
19055 0.5541 ± 0.0418
19057 0.5972 ± 0.0423
19059 0.5843 ± 0.0444
19060 0.5367 ± 0.0363
19065 0.4697 ± 0.0514
19066 0.4723 ± 0.0438
19068 0.6606 ± 0.0494
19069 0.5751 ± 0.0587
19070 0.6183 ± 0.0458
19071 0.5494 ± 0.0398
19072 0.5843 ± 0.0403
19073 0.5521 ± 0.0432
19074 0.5074 ± 0.0433
19075 0.5217 ± 0.0423
19077 0.6414 ± 0.0464
19078 0.6054 ± 0.0425
19079 0.6485 ± 0.0418
19081 0.6064 ± 0.0502
19085 0.5421 ± 0.0431
19086 0.6131 ± 0.0533
19091 0.5996 ± 0.0415
19092 0.6756 ± 0.0465
19093 0.6169 ± 0.0451
19094 0.7297 ± 0.0449
19095 0.6547 ± 0.0453
19096 0.6419 ± 0.0479
19097 0.612 ± 0.0458
19098 0.5557 ± 0.063
19099 0.6117 ± 0.0441
19100 0.5865 ± 0.0407
19101 0.5261 ± 0.0431
19102 0.5507 ± 0.0465
19103 0.3779 ± 0.0715
19108 0.4920 ± 0.1003
19109 0.5554 ± 0.0449
19110 0.7012 ± 0.0549
19113 0.5511 ± 0.0381
19114 0.5737 ± 0.0372
19120 0.6277 ± 0.0442
19122 0.6891 ± 0.0973
19125 0.5787 ± 0.0377
19126 0.6784 ± 0.0434
19128 0.6032 ± 0.0386
19129 0.5855 ± 0.0508
19131 0.5565 ± 0.0345
19132 0.6399 ± 0.0378
19136 0.5713 ± 0.0363
19138 0.5700 ± 0.0371
19139 0.5908 ± 0.0408
19143 0.5870 ± 0.0391
19147 0.5938 ± 0.0482
19151 0.6228 ± 0.0368
19155 0.5157 ± 0.0352
19158 0.5592 ± 0.1187
19160 0.5279 ± 0.0350
19161 0.5816 ± 0.0362
19162 0.5545 ± 0.0359
19163 0.5700 ± 0.0376
19164 0.5852 ± 0.0376
19165 0.6260 ± 0.0531
19167 0.5779 ± 0.0410

p+Al

Fill Pol(blue)
19182 0.5894 ± 0.0339
19183 0.5457 ± 0.0335
19191 0.5424 ± 0.0351
19192 0.5526 ± 0.0391
19193 0.5830 ± 0.0369
19195 0.6117 ± 0.0362
19198 0.9932 ± 0.3132
19202 0.5083 ± 0.1233
19204 0.5672 ± 0.0332
19205 0.6018 ± 0.1294
19207 0.5476 ± 0.0332
19208 0.4166 ± 0.0779
19209 0.5131 ± 0.0345
19211 0.5793 ± 0.0390
19213 0.5284 ± 0.0345
19214 0.5223 ± 0.0322
19215 0.5364 ± 0.0328
19217 0.5296 ± 0.0598
19227 0.6129 ± 0.0550
19228 0.5632 ± 0.0605
19229 0.5944 ± 0.0837
19231 0.6056 ± 0.0408
19234 0.5367 ± 0.0495
19237 0.6439 ± 0.0409
19238 0.5628 ± 0.0388
19240 0.5412 ± 0.0336
19242 0.5408 ± 0.0357
19243 0.5221 ± 0.0662
19248 0.6038 ± 0.0432
19249 0.5675 ± 0.0456

Fast Offline Analysis

p+Au

Date Fill Blue beam Background Comments
A_N P_B
05/04/2015 19020 0.0392 ± 0.0014 0.6283 ± 0.0432 0.09
05/05/2015 19024 0.0373 ± 0.0013 0.6718 ± 0.0443 0.09
05/05/2015 19026 0.0395 ± 0.0026 0.5859 ± 0.0785 0.11
05/06/2015 19028 0.0358 ± 0.0015 0.6721 ± 0.0506 0.12
05/06/2015 19029 0.0338 ± 0.0014 0.7396 ± 0.0544 0.16
05/06/2015 19032 0.0356 ± 0.0015 0.7038 ± 0.0541 0.19
05/07/2015 19033 0.0361 ± 0.0016 0.6390 ± 0.0554 0.22
05/07/2015 19035 0.0359 ± 0.0014 0.6779 ± 0.0490 0.15
05/08/2015 19037 0.0330 ± 0.0020 0.5710 ± 0.0672 0.28 (target switches stuck)
05/08/2015 19038 0.0284 ± 0.0023 0.6722 ± 0.0957 0.25
05/08/2015 19039 0.0336 ± 0.0015 0.6592 ± 0.0540 0.14
05/09/2015 19040 0.0344 ± 0.0015 0.5839 ± 0.0516 0.15
05/09/2015 19041 0.0357 ± 0.0014 0.5742 ± 0.0472 0.13
05/09/2015 19042 empty target
05/10/2015 19043 0.0344 ± 0.0014 0.5891 ± 0.0471 0.13
05/10/2015 19046 0.0319 ± 0.0060 0.6565 ± 0.2308 0.14
05/11/2015 19049 0.0353 ± 0.0013 0.5792 ± 0.0438 0.12
05/11/2015 19050 0.0354 ± 0.0014 0.5189 ± 0.0445 0.10
05/11/2015 19052 0.0361 ± 0.0013 0.5959 ± 0.0425 0.14
05/12/2015 19053 0.0351 ± 0.0019 0.5764 ± 0.0635 0.10
05/12/2015 19055 0.0334 ± 0.0013 0.5547 ± 0.0467 0.10
05/13/2015 19057 0.0359 ± 0.0014 0.6389 ± 0.0474 0.10 (first half of fill)
05/14/2015 19059 0.0356 ± 0.0013 0.5136 ± 0.0410 0.11
05/14/2015 19060 0.0372 ± 0.0012 0.5670 ± 0.0386 0.11
05/14/2015 19065 0.0341 ± 0.0015 0.5155 ± 0.0511 0.12
05/15/2015 19066 0.0351 ± 0.0013 0.5524 ± 0.0417 0.12
05/15/2015 19068 0.0344 ± 0.0013 0.6159 ± 0.0444 0.12
05/16/2015 19069 0.0343 ± 0.0015 0.5350 ± 0.0522 0.12
05/16/2015 19070 0.0351 ± 0.0014 0.5904 ± 0.0460 0.11
05/16/2015 19071 0.0381 ± 0.0012 0.5425 ± 0.0370 0.13
05/17/2015 19072 0.0378 ± 0.0013 0.5931 ± 0.0392 0.12
05/17/2015 19073 0.0356 ± 0.0013 0.5338 ± 0.0405 0.13
05/18/2015 19074 0.0365 ± 0.0013 0.5557 ± 0.0407 0.13
05/18/2015 19075 0.0355 ± 0.0013 0.6099 ± 0.0422 0.12
05/18/2015 19077 0.0365 ± 0.0012 0.5737 ± 0.0389 0.12 (switch to VME DAQ)
05/19/2015 19078 0.0337 ± 0.0011 0.6327 ± 0.0397 0.12
05/19/2015 19079 0.0373 ± 0.0011 0.6126 ± 0.0367 0.13
05/20/2015 19081 0.0348 ± 0.0015 0.5411 ± 0.0512 0.11
05/21/2015 19085 0.0353 ± 0.0012 0.5853 ± 0.0407 0.13
05/21/2015 19086 0.0363 ± 0.0015 0.6248 ± 0.0485 0.12
05/22/2015 19091 0.0367 ± 0.0012 0.6136 ± 0.0396 0.13
05/22/2015 19092 0.0366 ± 0.0012 0.6423 ± 0.0402 0.13
05/22/2015 19093 0.0367 ± 0.0012 0.6000 ± 0.0393 0.14
05/23/2015 19094 0.0373 ± 0.0013 0.6947 ± 0.0432 0.13
05/23/2015 19095 0.0371 ± 0.0012 0.6357 ± 0.0402 0.13
05/24/2015 19096 0.0380 ± 0.0012 0.6226 ± 0.0394 0.13
05/24/2015 19097 0.0372 ± 0.0012 0.6030 ± 0.0389 0.12
05/24/2015 19098 0.0364 ± 0.0019 0.6042 ± 0.0624 0.12
05/25/2015 19099 0.0363 ± 0.0012 0.6058 ± 0.0404 0.14
05/25/2015 19100 0.0358 ± 0.0012 0.6247 ± 0.0405 0.14
05/25/2015 19101 0.0380 ± 0.0013 0.5421 ± 0.0396 0.13
05/26/2015 19102 0.0358 ± 0.0013 0.5501 ± 0.0418 0.14
05/26/2015 19103 0.0398 ± 0.0026 0.5949 ± 0.0764 0.11
05/26/2015 19108 0.0371 ± 0.0029 0.5779 ± 0.0930 0.14
05/27/2015 19109 0.0376 ± 0.0013 0.5871 ± 0.0419 0.13
05/27/2015 19110 0.0362 ± 0.0014 0.6693 ± 0.0490 0.11
05/28/2015 19113 0.0367 ± 0.0012 0.5664 ± 0.0379 0.13
05/28/2015 19114 0.0386 ± 0.0011 0.6008 ± 0.0344 0.12
05/29/2015 19120 0.0375 ± 0.0012 0.5451 ± 0.0383 0.14
05/29/2015 19122 0.0369 ± 0.0025 0.6677 ± 0.0835 0.13
05/30/2015 19125 0.0377 ± 0.0011 0.6050 ± 0.0354 0.11
05/30/2015 19126 0.0368 ± 0.0011 0.6577 ± 0.0379 0.13
05/30/2015 19128 0.0371 ± 0.0011 0.6486 ± 0.0364 0.12
05/31/2015 19129 0.0376 ± 0.0015 0.5760 ± 0.0470 0.10
05/31/2015 19131 0.0383 ± 0.0011 0.6261 ± 0.0343 0.11
05/31/2015 19132 0.0377 ± 0.0011 0.6243 ± 0.0340 0.11
06/01/2015 19136 0.0387 ± 0.0011 0.5573 ± 0.0320 0.11
06/01/2015 19138 0.0387 ± 0.0011 0.5653 ± 0.0338 0.11
06/02/2015 19139 0.0386 ± 0.0012 0.5934 ± 0.0360 0.11
06/02/2015 19143 0.0353 ± 0.0012 0.6134 ± 0.0400 0.11
06/04/2015 19147 0.0356 ± 0.0014 0.6542 ± 0.0482 0.10
06/04/2015 19151 0.0362 ± 0.0010 0.6493 ± 0.0351 0.11
06/05/2015 19155 0.0376 ± 0.0011 0.5276 ± 0.0336 0.11
06/05/2015 19158 0.0380 ± 0.0031 0.5111 ± 0.0922 nan
06/06/2015 19160 0.0383 ± 0.0011 0.5374 ± 0.0326 0.11
06/06/2015 19161 0.0362 ± 0.0011 0.5918 ± 0.0350 0.12
06/06/2015 19162 0.0374 ± 0.0011 0.5814 ± 0.0344 0.11
06/07/2015 19163 0.0363 ± 0.0011 0.6108 ± 0.0366 0.12
06/07/2015 19164 0.0381 ± 0.0011 0.5787 ± 0.0339 0.11
06/07/2015 19165 0.0363 ± 0.0015 0.5682 ± 0.0493 0.11
06/08/2015 19167 0.0384 ± 0.0012 0.5901 ± 0.0363 0.10
06/08/2015 19169 0.0373 ± 0.0012 0.5583 ± 0.0376 0.10
mean 0.596 ± 0.005

p+Al

Date Fill Blue beam Background Comments
A_N P_B
06/09/2015 19182 0.0396 ± 0.0011 0.5619 ± 0.0322 0.09
06/09/2015 19183 0.0378 ± 0.0010 0.5450 ± 0.0308 0.10
06/11/2015 19191 0.0376 ± 0.0010 0.5319 ± 0.0318 0.08
06/11/2015 19192 0.0367 ± 0.0011 0.5620 ± 0.0350 0.12
06/11/2015 19193 0.0382 ± 0.0011 0.5598 ± 0.0345 0.12
06/12/2015 19195 0.0360 ± 0.0010 0.5835 ± 0.0337 0.13
06/12/2015 19198 0.0289 ± 0.0065 0.8508 ± 0.3032 (0.01) low luminosity
06/13/2015 19202 0.0329 ± 0.0035 0.4497 ± 0.1182 0.13
06/13/2015 19204 0.0378 ± 0.0010 0.5636 ± 0.0313 0.11
06/13/2015 19205 0.0293 ± 0.0034 0.6948 ± 0.1437 0.14 broken chiller
06/14/2015 19206 (unclear) 0.13 (flip-flop fill pattern)
06/14/2015 19207 0.0372 ± 0.0010 0.5749 ± 0.0313 0.13
06/14/2015 19208 0.0380 ± 0.0025 0.5121 ± 0.0746 0.13
06/15/2015 19209 0.0383 ± 0.0011 0.5157 ± 0.0339 0.12
06/15/2015 19211 0.0367 ± 0.0011 0.5974 ± 0.0365 0.16
06/16/2015 19213 0.0388 ± 0.0011 0.5219 ± 0.0315 0.13
06/16/2015 19214 0.0388 ± 0.0010 0.5390 ± 0.0300 0.12
06/17/2015 19215 0.0377 ± 0.0010 0.4958 ± 0.0297 0.13
06/17/2015 19217 0.0377 ± 0.0019 0.5588 ± 0.0599 0.13
06/18/2015 19227 0.0361 ± 0.0016 0.5860 ± 0.0524 0.12
06/18/2015 19228 0.0360 ± 0.0019 0.6454 ± 0.0654 0.13
06/18/2015 19229 0.0327 ± 0.0022 0.6455 ± 0.0807 0.12
06/18/2015 19231 0.0368 ± 0.0012 0.6128 ± 0.0382 0.12
06/19/2015 19234 0.0371 ± 0.0015 0.5403 ± 0.0473 0.13
06/19/2015 19237 0.0354 ± 0.0012 0.6479 ± 0.0396 0.13
06/20/2015 19238 0.0370 ± 0.0011 0.5284 ± 0.0347 0.14
06/20/2015 19240 0.0384 ± 0.0011 0.5736 ± 0.0325 0.12
06/21/2015 19242 0.0374 ± 0.0011 0.5781 ± 0.0346 0.12
06/21/2015 19243 0.0351 ± 0.0019 0.5757 ± 0.0640 0.13
06/22/2015 19248 0.0385 ± 0.0013 0.5532 ± 0.0384 0.14
06/22/2015 19249 0.0352 ± 0.0013 0.6342 ± 0.0443 0.14
mean 0.538 ± 0.007
Effective analyzing power and beam polarization.