Difference between revisions of "July 31, 2020 Meeting Minutes"

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==Post-meeting notes==
 
==Post-meeting notes==
*To be added...
+
*Ricardo presented updated results of secondary electron trajectories (after SEY) with expanded steering magnet field map - previously the field map did not cover the entire beam pipe (this was fine for the focused primary electron beam, but not for ions and secondary electrons)
 +
*Carlos showed the positions of radiation monitors around the CEBAF (?) gun
 +
*Link to Google Doc is now on this meeting page (and will be on all future meeting pages).
 +
**Josh will upload a QE difference plot to the outline. Cristhian uploaded a QE plot from June 2017 with the ion damage distribution overlayed. The distribution overlaps where the apparent QE damage is.
 +
*Josh showed preliminary simulations for the GPT/IBSimu benchmarking test. Will have a full presentation next week.
 +
**Two simulations used a constant H2 density of 10^17 and two used Marcy's H2 density profile for CEBAF from Molflow.
 +
**Will try a higher density to increase the # of ions produced in the simulation - this will hopefully show that ion transverse distribution matches the Gaussian transverse distribution of the primary electrons.
 +
**Also need to filter the results by particle type (i.e. primary electrons, secondary electrons, SEY, ions)
 +
**Need to use space charge - maybe should get potential from primary electron beam and use that? Not sure if it would be faster to do that...
  
  
 
[[Ionization Effects Meetings | Return to Ionization Effects Meetings]]
 
[[Ionization Effects Meetings | Return to Ionization Effects Meetings]]
  
[[Weekly phone call - July 30, 2020 | Go to Meeting Page]]
+
[[Weekly phone call - July 31, 2020 | Go to Meeting Page]]

Latest revision as of 11:42, 3 August 2020

Post-meeting notes

  • Ricardo presented updated results of secondary electron trajectories (after SEY) with expanded steering magnet field map - previously the field map did not cover the entire beam pipe (this was fine for the focused primary electron beam, but not for ions and secondary electrons)
  • Carlos showed the positions of radiation monitors around the CEBAF (?) gun
  • Link to Google Doc is now on this meeting page (and will be on all future meeting pages).
    • Josh will upload a QE difference plot to the outline. Cristhian uploaded a QE plot from June 2017 with the ion damage distribution overlayed. The distribution overlaps where the apparent QE damage is.
  • Josh showed preliminary simulations for the GPT/IBSimu benchmarking test. Will have a full presentation next week.
    • Two simulations used a constant H2 density of 10^17 and two used Marcy's H2 density profile for CEBAF from Molflow.
    • Will try a higher density to increase the # of ions produced in the simulation - this will hopefully show that ion transverse distribution matches the Gaussian transverse distribution of the primary electrons.
    • Also need to filter the results by particle type (i.e. primary electrons, secondary electrons, SEY, ions)
    • Need to use space charge - maybe should get potential from primary electron beam and use that? Not sure if it would be faster to do that...


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