Difference between revisions of "Anode"

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* Ask Joe is the anode tube needs to be biased, or if it can be at ground potential
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* '''Anode tube will be electrically isolated from anode and from flange fram support. In this manner the anode and the tube can be biased, or grounded, independently'''
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* Discuss with Marcy and ME new anode tube design with significantly more open area for improved pumping. This new design will have to be checked in GPT beam dynamics simualtions. Make drawing, fabricate, UHV clean
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*[[Media:Anode findings Jan 31 2022.docx]]
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* Work with Phil and Danny on comparing anode drawing with support frame (spider) and the rest of the anode assembly parts.
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*[[Media:Carlos notes on drawing anode cathode gap 6 cm like CEBAF.pdf]]
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* Evaluate amount of anode shift allowed by the existing design/assembly
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*[[Media:Carlos notes on biased anode CEBAF gun tube grounded.pdf]]
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* Perform CST, GPT simulations for guidance on anode shift to compensate beam kick at 200 keV. Based on those, determine if anode assembly/design has sufficient slop
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*[[Media:Anode tracker CIS-ASY-R30-3 18" 200 kV updated 02-08-22.xlsx]]
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* Once SS&A fiducial the HV chamber, check if the anode needs to be shifted to compensate for any top flange (cathode) misalignment
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*[[Media:Anode tracker CIS-ASY-R30-3 18" 200 kV updated 02-01-22.xlsx]]
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* The anode has some scratches, it needs re-polishing
 
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* ceramic washers are broken, need more washers but depends if tube needs to be biased or not
 
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* Dry fit anode components with new tube and ensure the anode and check anode can be shifted per GPT simulations guidelines
 
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* UHV clean all components
 
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* Final assembly prior to installation in HV chamber
 
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*[https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page]
 
*[https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page]

Latest revision as of 15:18, 28 February 2022

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