Owl Shift Summary

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User name danez

Log entry time 08:10:17 on March 15, 2011

Entry number 351898

keyword=Owl Shift Summary

SL: David Anez
TO: Konrad Aniol
3rd:

Owl Shift Summary
=================
Plan: SRC Triple Coincidence Runs

Kinematic Settings

Beam Energy: 4456 GeV
Left HRS: 3950 MeV/c, 16.0 degrees
Right HRS: 952 MeV/c, 42.5 degrees
Target: 10cm LD2
Current: 3/3.5 μA
Prescales:

T1 = 100/130
T2 = 1
T3 = 15/20
T4 = 1
T5 = 1
T6 = 4/5
T7 = 4/5
T8 = 15

Please note that all times are approximate
00:00	Taking production runs on 10cm LD2, beam at 3 μA. 3rd hasn't shown up for shift.
01:40	TO closed the JT Valve 2 steps to bring the heater temperature down in an attempt to decrease the incoming 15K temperature.
03:55	Increased beam to 3.5 μA per Or's request. Recalculated prescales for T1/3/6/7 = 80/80/100/100 Hz.
08:00	Turned things over to the Day Shift, with run 2833 still running.

Run	Events	Time [mins]	Current [μA]	Deadtime [%]	Target	Comments
2822	1000336	42.659	3	20.26	10cm LD2	production run
2823	999649	42.256	3	20.22	10cm LD2	production run
2824	999849	42.457	3	20.39	10cm LD2	production run
2825	999950	41.687	3	20.33	10cm LD2	production run
2826	1000620	41.146	3	20.60	10cm LD2	production run
2827	1000392	41.632	3	20.36	10cm LD2	production run
2828	1000116	42.787	3.5	19.72	10cm LD2	production run, beam current increased, prescales recalculated
2829	999953	41.724	3.5	19.65	10cm LD2	production run
2830	999767	43.612	3.5	19.62	10cm LD2	production run
2831	1000048	41.761	3.5	19.74	10cm LD2	production run
2832	641813	30.487	3.5	20.88	10cm LD2	production run, stopped early due to ROC10 hanging

General Comments

Another quiet night.
Never heard from scheduled 3rd, Toby Badman. Looks like this was his only scheduled shift for the entire series of experiments.
Left dipole NMR continued to lose lock occasionally, but relocked within a few moments.