Difference between revisions of "Harp scan plan"
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(→Perform radiator harp scan) |
(→Perform radiator harp scan) |
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== Perform accelerator harp scans == | == Perform accelerator harp scans == | ||
| − | # Ask MCC for three harp scans: 5C11, 5C11B | + | # Ask MCC for three harp scans: 5C11, 5C11B with 1 uA of tune beam |
#* Remind MCC that all three should be done with tune beam | #* Remind MCC that all three should be done with tune beam | ||
== Perform radiator harp scan == | == Perform radiator harp scan == | ||
| − | |||
# Ask for 200 nA CW beam | # Ask for 200 nA CW beam | ||
| + | # Perform radiator harp scan as described in [https://halldweb.jlab.org/hdops/wiki/index.php/Beam_Line_Detectors_Shift#Radiator_Harp_Scan this wiki page] | ||
== Restore Production conditions == | == Restore Production conditions == | ||
Latest revision as of 18:23, 3 March 2020
Contents
Set up harp scan
- Ask MCC to stop beam delivery in preparation for harp scans
- Remove all radiators (BLANK or RETRACTED)
- Move collimator to blocking position
Perform accelerator harp scans
- Ask MCC for three harp scans: 5C11, 5C11B with 1 uA of tune beam
- Remind MCC that all three should be done with tune beam
Perform radiator harp scan
- Ask for 200 nA CW beam
- Perform radiator harp scan as described in this wiki page
Restore Production conditions
- Ask MCC to take beam away and mask FSD for radiator movement
- Insert desired radiator (e.g., diamond or 3x10^-4 RL amorphous)
- Amorphous radiator retracted
- Move collimator to 5.0 mm diameter hole (can be done in parallel with previous steps)
- Ask for the appropriate current CW beam to be restored
- Refer to this wiki page for standard production conditions
