Fall 2018 Optics Runs

Back to 2018 Fall Run

Optics with 2 pass beam

eK optics runs with coincidence CODA

Run-No	Angle (L/RHRS)	Momentum (L/RHRS)	Comments
111718, 111719	13.2/13.2	2.218, 1.823	PS1=10, PS4=20
111721	13.2/13.2	2.218, 1.823	PS1=5, PS4=50, PS5=1

Hydrogen Elastic with LHRS

Run-No	Theta (Degree)	Momentum	Q1 current	Comments
111702	13.2	3.93	882.8A	data taken during e'K. Unstable beam x position. Better not use trigger 2 so no need to recalibrate timing
111841	13.2	3.93	882.8A	data taken during e'K
111842	13.2	3.82	875A	data taken during e'K
3605	17	3.82	875A
3565,3566,3567	17	3.67	823.6A
3621	17	3.57	Q1 regulator on

Optics with 5 pass beam

• E0 = 10.6 GeV, Theta_L = 17 Degrees, Theta_R = 24.00 Degrees
• Sieve in between run 3451 and 3479.
• The BMP Y behaved wired during optics runs. (see log). Per Jason we can use the Harp scan position at (1.4,1.8)see log instead of the BPM to decide the beam position for optics calibration.

Optics Runs with Sieve Out

HRS-L

Run-No	E'(GeV/c)	Theta (Degree)	Targets	Current	Prescale	Total Events	Comments
3443,3448,3449	3.93	17.009	Optics	9.00	1/1/1
3444	3.82	17.009	Optics	9.00	1/1/1
3447	3.67	17.009	Optics	9.00	1/1/1
3432-3442	3.82	17.009	Tianium	5.00	1/1/1		Harp Scan run at different beam position
3445	3.82	17.009	Tianium	9.00	1/1/1
3446	3.67	17.009	Titanium	9.00	1/1/1

HRS-R

Run-No	E'(GeV/c)	Theta (Degree)	Targets	Current	Prescale	Total Events	Comments
93486,93487,93490, 93491,93492	3.10	24.016	Optics	9	1/1/1
93488, 93489	3.10	24.016	Titanium	9	1/1/1
93474-93485	3.10	24.016	Titanium	5	1/1/1		Harp Scan Runs

Optics Runs with Sieve In

HRS-L

• The raster was on for the first three runs then was off since as indicated.

Run-No (xxxx)	E'(GeV/c)	Theta (Degree)	Targets	Current	Prescale	Total Events	Comments
3456	3.93	17.009	Titanium	9.00	1/1/1		Q1, I = 900A raster off
3452	3.93	17.009	Titanium	9.00	1/1/1		Q1, I = 900A, raster on
3457	3.93	17.009	Titanium	9.00	1/1/1		Q1, I = 882.8A, raster off
3453	3.93	17.009	Titanium	9.00	1/1/1		Q1, I = 882.8A, raster on
3455	3.93	17.009	Titanium	9.00	1/1/1		Q1, I = 870.7A, regulator on, standard tune, raster off
3454	3.93	17.009	Titanium	9.00	1/1/1		Q1, I = 870.7A, regulator on, standard tune, raster on
N/A	3.93	17.009	Titanium	9.00	1/1/1		Q1, I = 820.6A, linear tune, raster off
3459, 3460, 3461	3.93	17.009	Optics	9.00	1/1/1		Q1, I = 882.8A, best tune, raster off

• From this point, all raster off

Run-No (xxxx)	E'(GeV/c)	Theta (Degree)	Targets	Current	Prescale	Total Events	Comments
3462,3469,3470	3.82	17.009	Titanium	9.00	1/1/1		Q1, I = 875A
3463	3.82	17.009	Titanium	9.00	1/1/1		Q1, I = 855A
3464, 3465	3.82	17.009	Titanium	9.00	1/1/1		Q1, I = 797.6A, linear tune
3471-3474	3.82	17.009	Optics	9.00	1/1/1		Q1, I = 875 A, best tune

Run-No (xxxx)	E'(GeV/c)	Theta (Degree)	Targets	Current	Prescale	Total Events	Comments
3467	3.67	17.009	Titanium	9.00	1/1/1		Q1, I = 823.6 A
3468	3.67	17.009	Titanium	9.00	1/1/1		Q1, I = 858 A
3475,3476,3478	3.67	17.009	Optics	9.00	1/1/1		Q1, I = 823.6 A, best tune
3479	3.67	17.009	Optics	9.00	1/1/1		Q1, I = 823.6 A, best tune, Sieve Slit is OUT

Run-No (xxxx)	E'(GeV/c)	Theta (Degree)	Targets	Current	Prescale	Total Events	Comments
3477	2.5	17.009	Titanium	9.00	1/1/1		Q1 regulator on, no saturation

HRS-R

Run-No (xxxx)	E'(GeV/c)	Theta (Degree)	Targets	Current	Prescale	Total Events	Comments
93495	3.10	24.016	Titanium	9	1/1/1		raster on
93496 - 93503, 93506-93508	3.10	24.016	Titanium	9	1/1/1		raster off
93504,93505,93509-93517	3.10	24.016	Optics	9	1/1/1		raster off
93518	3.10	24.016	Optics	9	1/1/1		raster off, sieve is OUT