Moller Polarimeter/A1n/d2n

Moller measurement summaries for A1n/d2n

This is the "Cliff notes section on Moller polarimetry runs during the Polarized Helium-3 Running.

December 12, 2019summary

Five pass commissioning. Used preliminary <azz>. Randoms were higher than expected. Need more shielding?

December 19, 2019summary

We were able to determine the optimum quad settings, set the detector HV and perform the collimator scan pretty quickly.

January 18, 2020 summary

Before this measurement, timed in randoms so that right arm comes exactly 16 ns after left. [1]. During measurement, replaced 8 ns with 6 ns delay on left arm. Reduced left/right HV by 25 V (1245/1225). Ran with collimator 5 in - this reduced backgrounds a little. Q2/Q3 current changed to 1284.604 A. Bleedthrough check, ~ 10 nA. [2] Settings: [3]: [4] BPMs: [5]

January 27, 2020 summary,

Moller tune check and collimator settings[6].The beam current was 1 uA and IHWP IN. During the first three runs (1385-1387), Hall A was changing their slit and attenuator. During the last 3 runs(1388-1390),had the same slit settings. Moller measurement results[7] , BPMs:[8]

February 3, 2020summary Spin Dance

February 12, 2020 summary

February 19, 2020 summary

February 27, 2020 summary

March 6th, 2020 summary

March 12th, 2020 summary

August 3rd, 2020 summary

August 12th, 2020 summary

Table of good Moller runs

This will be a log of all "good" Moller runs; ie, our "production" runs. It will include some detailed notes when necessary.

Date	  Run	 Pol (%)   Error (%)	Hwien	Flip       Energy(MeV)     Comment
01/18/20
	  1366	  	   	        -29.64	right      10.3857	   Detector Tune Check
 	  1368	  86.31	   0.98	        -29.64	right      10.3857	   Production IHWP OUT
 	  1369	  85.23	   0.98	        -29.64	right      10.3857	   Production IHWP OUT
	  1370	  86.53	   1.49	        -29.64	right      10.3857	   Production IHWP OUT
	  1371	 -86.05	   0.90	        -29.64	right      10.3857	   Production IHWP IN   
	  1372	 -85.69	   0.99	        -29.64	right      10.3857	   Production IHWP IN
	  1374	 -86.44	   1.06	        -29.64	right      10.3857	   Production IHWP IN
	  1375	 -84.96	   1.79	        -29.64	right      10.3857	   Production IHWP IN
	  1376	 -83.91	   1.55	        -29.64	right      10.3857	   Production IHWP IN
	  1377	 -85.18	   1.60	        -29.64	right      10.3857	   Production IHWP IN
	  1378	 -85.74	   0.96	        -29.64	right      10.3857	   Production IHWP IN