task:k500_changingbetweenbeamswithinacocktail
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Changing Between Beams Within A Cocktail
Beams changes within a cocktail may be completed quickly by changing the main field of the cyclotron and a limited number of changes to other beamline devices. The intention is to change the least number of devices while producing the same beam quality delivered to SEE.
Steps:
- Run main probe in to 24“
- This process could be done on FC2007, as long as the beam intensities for all beam species is within acceptable levels
- Increase chopper duty cycle to 100%
- Set the main field epsilon value to the new value
- If the value is already logged/known, use that. Otherwise use the value from Analog Beams and add the offset for the pilot. e.g. Pilot is at -300 ppm, new beam expected at +5000 ppm, set field to +4700 ppm
- Set the MHB phase 1 phase to the new value if known
- If value is not known, maximize beam current on probe by adjusting MHB phase 1 phase.
- Set the beam intensity to acceptable levels using chopper
- Extract the probe and send beam to FC2007
- Tweak the dee voltages. May also tweak centering/extraction bump but this may not be necesary
- Send beam to end of SEE line FC2192
- This may be done with small beam or uniform beam
- Adjust HEBT dipoles (D???? and D????) to maximize current on FC2192
- Set up uniform beam
task/k500_changingbetweenbeamswithinacocktail.1751980883.txt.gz · Last modified: 2025/07/08 09:21 by lange
