Temp overview

<center>CT Experiment (E12-06-107) Run Plan Overview<br/> </center><br/> [htbp]

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Kinematics for the run.

<math>Q^2</math>	<math>E_e</math>	<math>\theta_{e'}^{HMS}</math>	<math>p_{HMS}</math>	<math>\theta_{SHMS}</math>	<math>p_{SHMS}</math>	notes
GeV<math>^2</math>	GeV	deg	GeV/c	deg	GeV/c
8.01	6.4	45.07	2.131	17.13	5.122	overlap with E94139, first 3 pass kinematics, 1% stat
14.76	10.6	41.8	2.736	12.02	8.753	First 5 pass kinematics 2-2.5% stat
12.43	10.6	31.5	3.978	16.08	7.502	Second 5 pass kine, run with 2% stat
10.02	10.6	24.48	5.259	20.55	6.209	Third 5 pass kine, run with 1.4% stat
10.02	10.6	24.48	5.259	17.55	6.209	proton angle scan, &nbsp;2.5% stat (time permitting)
10.02	10.6	24.48	5.259	23.55	6.209	proton angle scan, &nbsp;2.5% stat (time permitting)

tab:kinematics_jul ''' <br/> All time estimates in the overview assume 50% Hall C + Accelerator efficiency, including configuration change time and a beam current of 65 <math>\mu</math>A. \<center><math>2ex]<br/> \subsection*{Last shift before Experiment begins:}<br/><br/>

1. {All spectrometer magnets on to correct polarity and cycled to initial

values. Spectrometers also at initial angles.}<br/>

1. {Check that no new obstructions have appeared since the spectrometer

angles were certified. For example, ladders, RadCon survey ropes, etc.}<br/>

1. {Double-check HMS/SHMS Gas Cerenkov pressure is at correct value.}<br/>
2. {Verify there are no obstructions between the detectors (ie, no WC covers,

no dangling cables, etc.) on both spectrometers.}<br/>

1. {Verify there are no unusual obstructions between the scattering chamber

and the spectrometer front windows. Make sure any protective windows on the scattering chamber have been removed.}<br/>

1. {Lock up the hall.}<br/>
2. {Clean up the counting house. Make sure all terminals, consoles, and printers are alive and well.}<br/>
3. {Take a cosmic run and look for problems.}<br/>

<br/> \pagebreak \noindent {\color{blue}{ \large '''{6.4 GeV data taking: 60 beam hours scheduled, need 8 hrs for calibration and 52 hrs (at 50% eff.) for production.}'''}}<br/><br/> {\BrickRed{

1. {Calibrations </math><math> 8 hours}
   • {Verify magnets properly cycled - Beam energy measurement - Harp scan}
   • {Detector checkout with 3/4 trigger, and long run for detector calibration}
   • {BCM Calibration (unless one was completed very close to the start of experiment)}
   • {</math>ep<math> elastic coincidences, (Heepcheck) </math>Q^2<math>=4.0 GeV</math>^2<math>, HMS at 4.263 GeV/c, 22.10 deg, SHMS at 2.928 GeV/c, 33.21 deg ,expected rate ~ few Hz \@ 65 </math><math>A current. (at least 3 hrs).}
   • {verify timing of all triggers}}}<br/>
2. {</math>Q^2=8.0<math> </math>(GeV/c)^2<math> production, goal: 10000 cnts}
   • {LH + MT 12 hrs + 4 hrs}
   • {C 36 hrs}<br/>

\noindent {\color{blue}{ \large '''{10.6 GeV data taking: 300 beam hours scheduled, need 8 hrs for calibration and 292 hrs (at 50% eff.) for production.}'''}}<br/>{\BrickRed{

1. {Calibrations </math><math> 8 hours}
   • {Verify magnets properly cycled - Beam energy measurement - Harp scan}
   • {Detector checkout with 3/4 trigger, and long run for detector calibration}
   • {BCM calibration}
   • {</math>ep<math> elastic coincidences (Heepcheck), </math>Q^2<math>=9.5 GeV</math>^2<math>, HMS at 5.5394 GeV/c, 23.20 deg, SHMS at 5.9250 GeV/c, 21.61 deg ,expected rate ~ few Hz \@ 65 </math><math>A current. (at least 4 hrs) }}}<br/>

{\PineGreen{<br/>

1. {</math>Q^2=14.76<math> </math>(GeV/c)^2<math> production, goal: 2000 cnts}
   • {LH + MT 51 hrs + 17 hrs}
   • {C 122 hrs}
2. {configuration change 5 hrs}
3. {</math>Q^2=12.43<math> </math>(GeV/c)^2<math> production, goal: 2500 cnts}
   • {LH + MT 12 hrs + 4 hrs}
   • {C 24 hrs}
4. {configuration change 5 hrs}
5. {</math>Q^2=10.02<math> </math>(GeV/c)^2<math> production, goal: 4500 cnts}
   • {LH + MT 6 hrs + 2 hrs}
   • {C 12.0 hrs}
6. {</math>Q^2=10.02<math> </math>(GeV/c)^2<math> proton angle scan, goal: 2500 cnts }
   • {C 12.0 hrs, proton angle scan 1, 2500 cnts}
   • {C 20.0 hrs, proton angle scan 2, 2500 cnts}<br/>

}}<br/>