Difference between revisions of "Tune Electron Beam"
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==Tune Electron Beam== | ==Tune Electron Beam== | ||
| − | + | ==Tune Electron Beam== | |
| − | + | * Goal: provide a clean electron beam through the center of the beam aperture to the beam dump in the tagger hall with acceptable radiation levels. | |
| − | # | + | * Priority: High |
| − | # | + | * [http://opsweb.acc.jlab.org/CSUEApps/atlis/task/14423 Link to the accelerator test plan for electron beam commissioning (ATLIS)] |
| − | # | + | * Expected duration Sept 29 - Oct 3 2014 |
| − | # | + | * Prerequisites: |
| − | # | + | # Tagger microscope (TAGM) and all the crates with electronics should be removed from Hall D. |
| − | # | + | # Goniometer in the beam-open position. The goniometer will not be used during the 2014 run |
| − | #* | + | # Amorphous radiator ladder equipped (HAPR included) and operational |
| − | # | + | # Beam lines under vacuum |
| − | # | + | # Tagger magnet operational |
| − | # | + | # Shielding walls installed |
| − | # | + | # Radiation monitors installed and operational |
| − | + | # Collimator block in the position between two holes, shielding the central area of the beam pipe | |
| − | + | # Profiler counter installed in front of the collimator | |
| − | # | + | |
| − | # | + | * Conditions: |
| − | # | + | # Pulsed beam [https://halldweb1.jlab.org/wiki/index.php/Tune_mode pulsed beam] 4-10 µA (average 60-150 nA) for the beam tune |
| + | # CW beam 50-100 nA at the final stage of the procedure | ||
| + | # No radiator | ||
| + | # Hall D quadrupole magnet MQPAD00 turned off | ||
| + | |||
| + | * Activities: | ||
| + | # Tune the pulsed beam to the dump, check the beam specifications, send the CW beam (accelerator). | ||
| + | # Check radiation levels in the tagger hall (Hall D/RadCon). | ||
| + | # Check for photons (with the Profiler and Active Collimator) and radiation levels in the collimator cave (Hall D/RadCon). | ||
| + | |||
| + | * Responsibility: Main: Accelerator, support: HallD, RadCon. | ||
==[[Tune Photon Beam]]== | ==[[Tune Photon Beam]]== | ||
Revision as of 16:26, 6 August 2014
Contents
Main Page
Tune Electron Beam
Tune Electron Beam
- Goal: provide a clean electron beam through the center of the beam aperture to the beam dump in the tagger hall with acceptable radiation levels.
- Priority: High
- Link to the accelerator test plan for electron beam commissioning (ATLIS)
- Expected duration Sept 29 - Oct 3 2014
- Prerequisites:
- Tagger microscope (TAGM) and all the crates with electronics should be removed from Hall D.
- Goniometer in the beam-open position. The goniometer will not be used during the 2014 run
- Amorphous radiator ladder equipped (HAPR included) and operational
- Beam lines under vacuum
- Tagger magnet operational
- Shielding walls installed
- Radiation monitors installed and operational
- Collimator block in the position between two holes, shielding the central area of the beam pipe
- Profiler counter installed in front of the collimator
- Conditions:
- Pulsed beam pulsed beam 4-10 µA (average 60-150 nA) for the beam tune
- CW beam 50-100 nA at the final stage of the procedure
- No radiator
- Hall D quadrupole magnet MQPAD00 turned off
- Activities:
- Tune the pulsed beam to the dump, check the beam specifications, send the CW beam (accelerator).
- Check radiation levels in the tagger hall (Hall D/RadCon).
- Check for photons (with the Profiler and Active Collimator) and radiation levels in the collimator cave (Hall D/RadCon).
- Responsibility: Main: Accelerator, support: HallD, RadCon.
