Difference between revisions of "Fall 2014 Commissioning Plan"
From Hall D Ops Wiki
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= Beam Configuration Parameters = | = Beam Configuration Parameters = | ||
* Energy of Beam. Expect energy ~ 10.5 GeV | * Energy of Beam. Expect energy ~ 10.5 GeV | ||
| − | * | + | * Beam current |
| − | ** | + | ** 2-10 µA pulsed beam, duty cycle 1.5% (see beam description [https://halldweb1.jlab.org/wiki/index.php/Tune_mode here]) |
| − | ** 50 nA | + | ** 50-200 nA CW |
* Radiators | * Radiators | ||
| − | ** 1.5 microns Al (1.7 | + | ** 1.5 microns Al (1.7·10<sup>-5</sup> R.L.) |
| − | ** 10 microns Al (11. | + | ** 10 microns Al (11.·10<sup>-5</sup> R.L.) |
| − | ** 30 microns Al ( | + | ** 30 microns Al (34.·10<sup>-5</sup> R.L.) |
* Targets. Diameter = 3.19 cm. The position of the target can be moved 12 cm downstream to 32 cm upstream relative to the nominal Hall D target position (60 cm downstream of the downstream end of the upstream solenoid endcap.) | * Targets. Diameter = 3.19 cm. The position of the target can be moved 12 cm downstream to 32 cm upstream relative to the nominal Hall D target position (60 cm downstream of the downstream end of the upstream solenoid endcap.) | ||
| − | ** 10mm disk of | + | ** 10mm thick disk of CH<sub>2</sub> (HDPE, high density polyethylene, density 0.93-0.97 g/cm<sup>3</sup> ) |
| − | ** 2mm disk | + | ** 2mm thick disk CH<sub>2</sub> (HDPE) |
| − | ** | + | ** 2mm thick for the 2mm-inner diameter and 7mm thick outside (HDPE) |
| − | ** 3.4mm | + | ** 3.4mm thick graphite disk |
* Run schedule. Scheduled about 4 weeks of beam to Hall D between mid Oct and mid Dec, 2014 | * Run schedule. Scheduled about 4 weeks of beam to Hall D between mid Oct and mid Dec, 2014 | ||
Revision as of 15:52, 5 August 2014
Contents
General Information
- Expected Staffing:
- Run Coordinator: Alexandre Deur
- Online Shifts: 3 persons per shift, one with solenoid training.
- Offline Shifts: at least two people looking at data written to tape.
- Coordination Activities:
- MCC meetings at 7:50am and 8:00am
- Daily run meeting broadcast on bluejeans 10:30am?? Meeting will be in the counting house conference room.
- Links to accelerator schedules:
- Activity Priority
- High: Activity should be completed, contingencies in place for issues.
- Medium: Desirable to complete the activity.
- Low: Activity would be useful if time permits us to do it.
- Deferred Activity
- Installation of liquid hydrogen target.
- Installation of diamond radiator in goniometer.
- Running data at 1350A solenoid current.
Beam Configuration Parameters
- Energy of Beam. Expect energy ~ 10.5 GeV
- Beam current
- 2-10 µA pulsed beam, duty cycle 1.5% (see beam description here)
- 50-200 nA CW
- Radiators
- 1.5 microns Al (1.7·10-5 R.L.)
- 10 microns Al (11.·10-5 R.L.)
- 30 microns Al (34.·10-5 R.L.)
- Targets. Diameter = 3.19 cm. The position of the target can be moved 12 cm downstream to 32 cm upstream relative to the nominal Hall D target position (60 cm downstream of the downstream end of the upstream solenoid endcap.)
- 10mm thick disk of CH2 (HDPE, high density polyethylene, density 0.93-0.97 g/cm3 )
- 2mm thick disk CH2 (HDPE)
- 2mm thick for the 2mm-inner diameter and 7mm thick outside (HDPE)
- 3.4mm thick graphite disk
- Run schedule. Scheduled about 4 weeks of beam to Hall D between mid Oct and mid Dec, 2014
