Difference between revisions of "Mar 17, 2022 - Update Meeting"

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* The electrodes and anode have been vacuum degassed to 950 C for 6 hours by S. Williams with the resulting sun profile shown below.
 
* The electrodes and anode have been vacuum degassed to 950 C for 6 hours by S. Williams with the resulting sun profile shown below.
 
** [[File:InjElectDeg950_6hrs_031522_1040_data_plot.jpg]]
 
** [[File:InjElectDeg950_6hrs_031522_1040_data_plot.jpg]]
 
+
* The electrode have been store din containers ready for UHV cleaning in the production chem room just prior to assembly.
 +
*[[File:Electrodes in containers after 950 C vacuum degassing.jpg]]
 +
* The ball electrode after the vacuum degassing run profile shown above (950 C for h)
 +
*[[File:Electrode ball after 950 C for 6 hours vacuum degassing.jpg]]
  
 
[https://wiki.jlab.org/ciswiki/index.php/Update_meetings Back to Update Meetings]
 
[https://wiki.jlab.org/ciswiki/index.php/Update_meetings Back to Update Meetings]

Revision as of 08:51, 17 March 2022

Agenda

  • NEG screens - Marcy
  • Vacuum chamber
    • Phil - Anything else to be done to the chamber (fiducial fixtures? support base? etc.)
    • How is the vacuum bake going? Marcy / Phil
  • Gun table layouts (UITF, CEBAF) - Shaun
  • Anode tube versions
    • Shaun sent Gabriel models for the 12 narrow and for the 6 wide slot tubes
    • Gabriel has done simulation of the beam deflection with these 2 models. Slides can be found here
    • The 12 slot tube seems to have a lesser effect on beam kick compared to the 6 slot tube
    • Gabriel and Carlos will discuss next week with Joe results from electrostatic models with various biasing options. This is to pick the best tube version (12 narrow slots, or 6 wide slots)
  • These are the models for the anode drift tube with 12, 0.5 inch wide slots (blue) and another tube with 6, 1.0 inch wide slots.
  • Tilted anode and tube with 12 and with 6 slots.png
  • The electrodes and anode have been vacuum degassed to 950 C for 6 hours by S. Williams with the resulting sun profile shown below.
    • InjElectDeg950 6hrs 031522 1040 data plot.jpg
  • The electrode have been store din containers ready for UHV cleaning in the production chem room just prior to assembly.
  • Electrodes in containers after 950 C vacuum degassing.jpg
  • The ball electrode after the vacuum degassing run profile shown above (950 C for h)
  • Electrode ball after 950 C for 6 hours vacuum degassing.jpg

Back to Update Meetings