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2015 01 Optics Settings » History » Version 8

Rogers, Chris, 06 May 2015 10:35

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h1. 2015 01 Optics Settings
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Going through table in 2015/01 v5 run plan...
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h2. TOF Calibration
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This is just a cut and paste from [[operations:RunPlan20150425]]
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| Particle Species| p at Tgt | p@D1 | p@D2 | Proton Absorber | Q1  | Q2  | Q3    | D1    | DS    | D2   | Q4     | Q5    | Q6    | Q7   | Q8     | Q9   | SSU E2 | SSU CC | SSU E1 | SSU M2 | SSU M1 | FC     | SSD M1 | SSD M2 | SSD E1 | SSD CC | SSD E2 |
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|                 | MeV/c    | MeV/c| MeV/c| mm              | A   | A   | A     | A     | A     | A    | A      | A     | A     | A    |A       | A    | A      | A      | A      | A      | A      | A      | A      | A      | A      | A      | A      |
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| Positron        | 300.0    | 259.7|249.58| 29              |66.29|82.54| 57.23 | 195.91| 426.03| 98.59| 163.16 |218.79 | 144.14| 83.40| 125.70 | 80.06| 0.     | 0.     | 0.     | 0.     | 0.     | 0.     | 0.     | 0.     | 0.     | 0.     | 0.     |
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h2. Tracker Hardware commissioning
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Upstream tracker; maximal fluence setting:- aim is to get as many particles as possible through the tracker centre, choose muons because they don't decay. No diffuser, low emittance beamline
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Upstream tracker; maximal illumination setting:- aim is to illuminate the upstream tracker reasonably evenly, choose muons because they don't readily decay. High emittance beamline
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Downstream tracker; maximal fluence setting:- we will illuminate the entire downstream tracker no matter what, so here we want to just get the best rate through that we possibly can
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h2. Tracker Validation
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Downstream tracker; maximal fluence setting:- aim is to illuminate both trackers with as many muons as possible
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h2. Beamline Pre-Commissioning
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To be defined.
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h2. Tracker External Alignment/External Alignment other detectors
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Downstream tracker; maximal fluence setting:- aim is to illuminate both trackers with as many muons as possible. Take a setting at 140, 200, 240 MeV/c to try to fight residual fields systematic.
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h2. Beam-Based Alignment
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Run with SSU, three momenta, 10k muons, fiddle with currents to get most fluence
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Run with SSD, three momenta, 10k muons, fiddle with currents to get most fluence
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Run with AFC, three momenta, 10k muons, fiddle with currents to get most fluence
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Run with combined, 10k muons, in baseline optics setting, fiddle with currents to get most fluence
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h2. Validation of track matching