Difference between revisions of "Feb 21, 2020 Meeting Minutes"

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==Emails/attachments sent during the previous week==
 
==Emails/attachments sent during the previous week==
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*Email chain subject name: comparison of input values, GPT/IBSimu Comparison Tests: Mean free path for 100 ions
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*Email chain subject name: GPT/IBSimu Comparison Tests: Mean free path for 100 ions
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**Date: Feb 7, 2020
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**Date: Feb 18, 2020
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**Description: Josh, Cristhian, and Ricardo Skyped to discuss test case to compare ionization routines - create electron simulation and adjust mean free path until 100 ions are produced within 1m.
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**Description: Cristhian sent article on Monte Carlo collision model using the null-collision method
  
 
==Post-meeting notes==
 
==Post-meeting notes==
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* Marcy presented vacuum simulations of the CEBAF photogun and beamline. These simulations and vacuum conditions are for May 21, 2018.
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* Cristhian presented ion back-bombardment simulations for a 3mA electron beam for 200us for a gas density of 2.60e18 and a beam radius of 0.2mm.
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* An excel spreadsheet of the vacuum data was been uploaded to the meeting page on Feb 21st
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* Josh presented updated plots of the ionization cross section and ion production rate vs. energy for H2, CH4, and CO. These were weighted by gas pressures from Marcy's presentation last week.
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* Results of the ionization routine benchmarking test (see email subject above) was presented.
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* Need to look at secondary electron yield (SEY) for ions on GaAsCs photocathodes
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* Need to read article on ion velocity distribution and adjust simulations accordingly. Currently the GPT uses a random velocity distribution...maybe there is a better way to do it?
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* Need to make histograms for GPT simulations
  
 
[[Ionization Effects Meetings | Return to Ionization Effects Meetings]]
 
[[Ionization Effects Meetings | Return to Ionization Effects Meetings]]
  
 
[[Weekly phone call - Feb 21, 2020 | Go to Meeting Page]]
 
[[Weekly phone call - Feb 21, 2020 | Go to Meeting Page]]

Latest revision as of 13:42, 24 March 2020

Emails/attachments sent during the previous week

  • Email chain subject name: GPT/IBSimu Comparison Tests: Mean free path for 100 ions
    • Date: Feb 18, 2020
    • Description: Cristhian sent article on Monte Carlo collision model using the null-collision method

Post-meeting notes

  • Cristhian presented ion back-bombardment simulations for a 3mA electron beam for 200us for a gas density of 2.60e18 and a beam radius of 0.2mm.
  • Josh presented updated plots of the ionization cross section and ion production rate vs. energy for H2, CH4, and CO. These were weighted by gas pressures from Marcy's presentation last week.
  • Need to look at secondary electron yield (SEY) for ions on GaAsCs photocathodes
  • Need to make histograms for GPT simulations

Return to Ionization Effects Meetings

Go to Meeting Page

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