Difference between revisions of "Instructions for shift takers"
From Hall A Wiki
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=Shift-worker responsibilities= | =Shift-worker responsibilities= | ||
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| + | Read, understandd and sign the [https://hallaweb.jlab.org/wiki/index.php/Shift_safety_documents safety documentation] of the experiments. | ||
'''Shift Leader''' | '''Shift Leader''' | ||
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* Follow the directives in the COO | * Follow the directives in the COO | ||
| − | * Log the following in a shift summary: | + | * Log the following in a shift summary in the [http://logbooks.jlab.org/book/halla HALOG]: |
| − | ** run list (describing the goal of this run: eg production on LH2, BMC calibration ...) and report | + | |
| − | ** | + | ** run list (describing the goal of this run: eg production on LH2, BMC calibration...) and report [[main stat howto|main statistics numbers]] |
| + | ** any major events, including accesses | ||
'''Target Operator''' | '''Target Operator''' | ||
* Watch the target, see Target Info | * Watch the target, see Target Info | ||
| − | * | + | * Assist the shift leader and third person |
'''Third person''' | '''Third person''' | ||
Revision as of 12:28, 8 November 2014
Shift-worker responsibilities
Read, understandd and sign the safety documentation of the experiments.
Shift Leader
- Consult the daily run plans and communicate with run coordinator or experts whenever problems happen that cannot be solved by shift workers.
- Maintain data taking quality and an efficient use of beam time.
- Follow the directives in the COO
- Log the following in a shift summary in the HALOG:
- run list (describing the goal of this run: eg production on LH2, BMC calibration...) and report main statistics numbers
- any major events, including accesses
Target Operator
- Watch the target, see Target Info
- Assist the shift leader and third person
Third person
- Start and stop the DAQ.
- Do online replay of all production runs;
- Compare replay histograms with the sample ones and report to shift leader any unexplained differences. Halog them.
- Fill the shift checklist ([| here]) once a shift. For guidance in filling the checklist, please see the checklist how-to ([| here]). If both the Shift Checklist and the Shift Checklist How-to need to be modified, the .doc files can be obtained from ELOG entry [| 255].
- The shift leader or TO can help.
Beam Recovery Procedure
Update: October 24, 2010.
- Empty target, establish correct beam position
- 5 uA empty target
- BPM4A (X,Y) = ( 0.0, 0.0) mm
- BPM4B (X,Y) = ( 0.0, 0.0) mm
- See white board for updates on these.
- Tolerances on these : +/- 0.3 mm
- In standard configuration we run without the raster (ok on cryotarget if beam current is less than 5uA)
- Put in BeO target, for visual check of spot (if camera still works)
- 10 uA rastered beam on BeO.
