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User name Sarah

Log entry time 00:13:29 on May 12, 2012

Entry number 384172

keyword=Swing Shift Summary

Swing Shift Summary

Leader: Sarah Phillips
Target: Mikhail Yurov
Third: Vincent Sulkosky

Summary

Production running, then a target anneal, and then more production running.

Timeline

16:00 - Shift starts with us taking production runs at a momentum setting of 1.8111 on both arms, on the bottom NH3 target.
16:34 - Hall C is down (they are installing tungsten shutters for a test), so our beam current is jumping around at 80 nA (they usually lock on Hall C to keep our beam current and energy stable). We ask them to reduce it to 60 nA, to reduce our deadtime.
16:46 - Requested a controlled, escorted access for target anneal work. Since the ARM is in Hall C at the moment, it will be a few minutes.
16:48 - Pengjia wants to set up for a BCM calibration after we come back up, so we request to mask the slow raster so he can adjust it.
16:59 - People are going down into the hall: Chris and Dustin for the target, and Alex for his set up.
17:07 - Alex requests slot 12 of hatsv5:2003 (5 channels) off (the beamline crate).
17:56 - Anneal finishing up.
18:20 - Going back to beam permit! Power permit right now!
18:25 - Beam permit! Starting the BCM calibration! We will start polarizing the target during this time too (top cup).
18:41 - Went over to Hall C to find out when they are next flipping the IHWP. They think that it will be about an hour.
18:54 - Pengjia is almost done (halog 384065), so we are just waiting to finish polarizing the target.
19:07 - MCC called, They are completely backed out of the BCM calibration procedure and are ready to go. We are still polarizing, almost there. Vince had to reboot the left arm DAQ since he was getting 100% deadtime with cosmics.
19:14 - Target is polarized to 79%, we have requested 65 nA so we can go back to production running.
19:22 - 65 nA of beam, back in production running on the right; still having some DAQ issues with the left (the reported deadtime is about 44%, see halog 384076 and halog 384091 ). We are using the top NH3 target now.
20:00 - Hall C has flipped the IHWP! It is now IN!
20:04 - Note that run 24673 didn't start properly, and thus doesn't exist!
20:38 - Changing the spectrometer settings to 1.7025. Changing the target to home to do the dilution runs.
20:43 - The target is at home, and the left spectrometer has settled, so we are taking the dilution run on the left arm.
20:50 - Moving to the carbon target!
20:51 - Starting our dilution run on carbon (once we get beam back).
21:00 - Going to the dummy cross hairs target!
21:05 - Doing the dummy dilution!
21:11 - Moving NH3 top target and polarizing!
21:25 - Target is at 78.1%. We have requested beam and are starting production running again.
21:53 - Asked MCC to bump up the current, since we are hovering around 57 nA instead of 65 nA. I called Hovhannes about whether we should go to a higher beam current, and he said to go to 100 nA. The target polarization is dropping a lot.
22:06 - Beam off since the target screen seems to have frozen up and needs to be rebooted.
22:13 - The target screens are back up. We have requested 75 nA while we investigate what is going on with the 3rd arm rates.
22:19 - Doing some raster test to check the rates. Check ends up being inconclusive. Going back to production running. We are staying at 80 nA since the target polarization is dropping like a rock and the rates are getting bad at 100 nA.
23:51 - We have been talking to Hovhannes, and we are going to try to go back to 65 nA for a while and keep an eye on things.
23:58 - Hall C wants to flip the IHWP. We'll call them in 5 minutes when our run ends.
24:04 - IHWP flip to OUT!
24:00 - End of shift! Production running!

Notes for the next shift:

Keep an eye on the energy value to make sure it doesn't wander.
Hall C is now in control of the IHWP, so keep track of when they flip it. Ideally, you want an ihwp flip about halfway through each point. If they don't flip it for some reason, make sure that you do.
Keep an eye on the beam current so it doesn't drift down to 40 nA. Keep and eye on the beam positions too.
If MCC cannot deliver beam due to an FSD on the Moller target when you know the target is out, ask them to reboot the IOC.

Completed Production Runs During this shift:

Left P0	Overall Goal	IHWP	Run number	Run nevents	Run Pt	Run nevents (scaled by Pt²)	Left accumulated nevents	Comments
1.8111	68M	OUT
		OUT	5975	0.5 M	dummy	--	--	dilution, previous shift
		OUT	5976	0.88 M	C12_40	--	--	dilution, previous shift
		OUT	5977	0.45 M	home	--	--	dilution, previous shift
		OUT	5978	7 M	0.66	5.42 M	5.42 M	previous shift
		OUT	5979	7 M	0.62	4.78 M	10.20 M
		OUT	5980	7 M	0.62	4.78 M	14.98 M
		OUT	5981	7 M	0.61	4.63 M	19.61 M
		OUT	5982	2.47 M	0.60	1.58 M	21.19 M
		OUT	5995	1.45 M	0.78	1.57 M	22.76 M
		OUT	5996	3.04 M	0.78	3.29 M	26.05 M
		IN	5997	7.0 M	0.78	7.57 M	33.62 M
		IN	5998	2.2 M	0.78	2.38 M	36.00 M
						Total:	36.00 M	Both Arms: 76.40
1.7025	71M	IN
		IN	5999	0.41 M	home	--	--	dilution
		IN	6000	0.72 M	carbon	--	--	dilution
		IN	6001	0.43 M	dummy	--	--	dilution
		IN	6002	7.0 M	0.78	7.57 M	7.57 M
		IN	6003	0.8 M	0.77	--	--	slow raster changed during this run
		IN	6004	7.0 M	0.75	7.0 M	14.57 M
		IN	6005	7.0 M	0.74	6.81 M	21.38 M
		IN	6006	- M	0.73	- M	- M

Right P0	Overall Goal	IHWP	Run number	Run nevents	Run Pt	Run nevents (scaled by Pt²)	Right accumulated nevents	Comments
1.8111	68M	OUT
		OUT	24659	0.48 M	dummy	--	--	dilution, previous shift
		OUT	24660	M	C12_40	--	--	dilution, previous shift
		OUT	24661	0.43 M	home	--	--	dilution, previous shift
		OUT	24662	6.75 M	0.66	5.23 M	5.23 M	previous shift
		OUT	24663	6.50 M	0.62	4.44 M	9.67 M
		OUT	24664	6.58 M	0.62	4.50 M	14.17 M
		OUT	24665	6.70 M	0.61	4.43 M	18.60 M
		OUT	24666	2.31 M	0.60	1.478 M	20.08 M
		OUT	24672	7.0 M	0.78	7.57 M	27.65 M
		OUT	24673	--	--	--	--	no run
		OUT	24674	2.9 M	0.78	3.14 M	30.79 M
		IN	24675	6.77 M	0.78	7.32 M	38.11 M
		IN	24676	2.12 M	0.78	2.29 M	40.40 M
						Total:	40.40 M	Both Arms: 76.40 M
1.7025	71M	IN
		IN	24677	6.78 M	0.78	7.33 M	7.33 M
		IN	24678	0.85 M	0.77	--	--	slow raster changed during this run
		IN	24679	6.81 M	0.75	6.81 M	14.14 M
		IN	24680	6.74 M	0.74	6.56 M	20.70 M
		IN	24681	- M	0.73	- M	- M

Present Total: 42.08

Third Arm	Overall Goal	IHWP	Run number	Run nevents	Run Pt	Run nevents (scaled by Pt²)	Right accumulated nevents	Comments
1.8111		OUT
		OUT	41962	6.6 M	0.62	--	--
		OUT	41963	113k	0.62	--	--
		OUT	41964	90 k	0.62	--	--
		OUT	41965	9.2 M	0.62	--	--
		OUT	41966	1.0 M	0.62	--	--
		OUT	41967	? M	0.60	--	--
		OUT	41968	? M	0.60	--	--
		OUT	41969	6.8 M	0.78	--	--
		OUT	41970	? M	0.78	--	--	last 5 minutes IHWP=IN
		IN	41971	? M	0.78	--	--	last 5 minutes while spectrometers are changing
		IN	41972	? M	0.77	--	--
		IN	41973	? M	0.75	--	--
		IN	41974	? M	0.74	--	--
		IN	41975	6.65 M	0.73	--	--

Other Completed Runs During this Shift:

P0	Arm	IHWP	Run number	Run nevents	Run Pt	Run nevents (scaled by Pt²)	Accumulated nevents	Comments
1.8111	68M	OUT
	Left	OUT	5983	--	Home	--	--	junk
	Right	OUT	24667	--	Home	--	--	junk
	Left	OUT	5984	89k	Home	--	--	cosmics
	Right	OUT	24668	88k	Home	--	--	cosmics
	Left	OUT	5985	20k	Home	--	--	pedestal
	Right	OUT	24669	21k	Home	--	--	pedestal
	Right	OUT	24670	1k	Home	--	--	pedestal
	Left	OUT	5986	40k	Home	--	--	BCM calibration
	Right	OUT	24671	136k	Home	--	--	BCM calibration
	Left	OUT	5987	358	Home	--	--	DAQ test
	Left	OUT	5988	--	Home	--	--	DAQ test
	Left	OUT	5989	--	Home	--	--	DAQ test
	Left	OUT	5990	--	Home	--	--	DAQ test
	Left	OUT	5991	--	Home	--	--	DAQ test
	Left	OUT	5992	--	NH3	--	--	junk
	Left	OUT	5993	--	NH3	--	--	junk
	Left	OUT	5994	--	NH3	--	--	junk