Swing Shift Summary April 18, 2011

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User name V. Sulkosky

Log entry time 00:08:46 on April 19, 2011

Entry number 356262

keyword=Swing Shift Summary April 18, 2011

April 18, 2011
SL: Vincent Sulkosky
TO: Hisham Albataineh
3rd: Xiyu Qiu

Swing Shift Summary:
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Plan: BCM Calibration and x>2 Production
Kinematic settings (4.2):

    energy = 3.356 GeV 
    left HRS P0 = 3.035 GeV/c
    left HRS angle = 23 degs
    right HRS P0 = 3.035 GeV/c
    right Q3 I = 1059.36 A
    right Q3 P0 = 2.6623 GeV/c
    right angle = -23 degs

16:00 MCC setting up for BCM calibration.
16:15 Start setting HRS-L and HRS-R to 3.035 GeV/c [in preparation for kinematics 4.2]
16:49 Start BCM calibration with Faraday Cup IN: BcmLog_174 and HRS run 3685.
17:26 Start BCM calibration with Faraday Cup out: BcmLog_176 and HRS run 3686.
Current scan: 110, 100, 50, 25, 10, 5, 2, 1, 0.5, 0.2, 80, 60, 40.
18:14 BCM calibration completed!
18:15 Asked for Controlled Access for spectrometer move.
18:55 Both spectrometers are now at 23 degrees.
19:05 Asked for 2 uA on empty target and raster back on.
19:07 Moved to BeO to check beam position and raster.
19:17 Beam back.
19:23 Move to Loop 1 4He 20 cm target.
19:31 Target in place asked for 1 uA.
19:39 Asked for 95 uA for production.
21:19 Ask to move to carbon 5 mm target.
21:27 Target in position. Asked for 95 uA.
21:48 Move to Dummy 4 cm.
21:51 Ask for 40 uA.
22:02 Asked for access for Dave Meekins to warm up the target.
22:10 Change right arm momentum to 2.678 GeV/c; RQ3 = 2.3492 GeV/c; RQ3 Iset = 938.22 A
22:45 Controlled access complete. Both Loop 1 and 2 are warming up.
23:18 Vacuum has recovered enough for beam.
23:37 Right HRS dipole NMR finally locked.
24:00 End shift with run 3695.

Run Summary:

Run	Events	Time [mins]	I_beam [uA]	Good Events*	Accumulated Events*	Deadtime [%]	Target	Comments
3684	169	0.6	N/A	N/A	N/A	N/A	Empty	Junk
3685	61k	12	N/A	N/A	N/A	8.6	Empty	BCM Calib. w Faraday Cup
3686	262k	47	N/A	N/A	N/A	8.0	Empty	BCM Calib. w/o Faraday Cup
3687	11.5k	4.2	5	N/A	N/A	15.2	BeO	Raster Check
3688	11.3k	4.4	1	N/A	N/A	15.8	He4 20 cm	Raster Check
3689	26.5k	0.8	95	N/A	N/A	27	He4 20 cm	Junk
3690	1.2M	47.0	95	20772	20772	18	He4 20 cm	Production
3691	1.15M	48.4	95	20428	41200	17	He4 20 cm	Production
3692	0.5M	17.7	95	41081	41081	13	Carbon 5 mm	Production
3693	77k	8.2	40	2840	2840	5.4	Dummy 4 cm	Production
3694	99.5k	30.5	20	2244	5084	18	Dummy 4 cm	Production LHRS only
3695			20	N/A	N/A	19	Dummy 4 cm	RHRS Optics

*Scaled based on a replay of a subset of events for the run.