owl shift summary

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User name nmuangma

Log entry time 08:10:29 on April14,2011

Entry number 355419

keyword=owl shift summary

April 13, 2011

SL: Navaphon Muangma

TO: John Leckey

Owl Shift Summary:

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Experiment: E08009



    beam energy = 4.450 GeV 

    left HRS P0 = 3.6014 GeV/c

    left HRS angle = 20.5 degs

    right HRS P0 = 1.5100 GeV/c

    right angle = -47.0 degs



0:00 Current scan (20,30,40, & 50) uA (3486-90)

0:38 Hall C request us to turn off the beam for their test.

1:00 Start BigBite Optic Scan run(3493-5) with magnet off and on.

1:38 resume production at 50 uA (60 uA gave unstable beam)

5:03 All HV for BigBite is OFF.

Run Summary:

Single rates runs fro current scan:

He4 target, RHRS-theta = 47



3486  @ 20 uA 

3487  @ 30 uA 

3488  @ 40 uA 

3490  @ 50 uA

Run Summary:

Run	Events	I_beam [uA]	BCM U1 [C]	Accumulated Q [C]	Deadtime [%]	Target	Comments
3493	257 K	4.0 uA	N/A	N/A	5	Carbon Optic	Optic
3494	700 K	4.0 uA	N/A	N/A	7	BeO	Optic: with BB magnet OFF
3495	500 K	4.0 uA	N/A	N/A	7.5	BeO	Optic: with BB magnet ON

Run	Events	I_beam [uA]	P_miss intetral	BCM U1 [C]	Accumulated Q [C]	Deadtime [%]	Target	Comments
3496-7	Junk	50-60	N/A	N/A	N/A			Junk
3498	1.0 M	50 uA	29757	0.12890	0.12890	9	He4-20cm	Production
3499	1.0 M	50 uA	29885	0.12960	0.25850	9	He4-20cm	Production
3500	1.0 M	50 uA	30242	0.12860	0.38710	9	He4-20cm	Production
3501	1.0 M	50 uA	29882	0.12880	0.51590	9	He4-20cm	Production
3502	1.0 M	50 uA	29453	0.12880	0.64470	9	He4-20cm	Production
3503	1.0 M	50 uA	29550	0.12860	0.77330	9	He4-20cm	Production
3504	1.0 M	50 uA	29648	0.12850	0.90180	9	He4-20cm	Production
3505	1.0 M	50 uA				9	He4-20cm	Production
3506	1.0 M	50 uA				9	He4-20cm	Production

Sum BCM U1 (C) = 0.90180