GTS meeting 10 04 16

• Gun HV chamber
  • NEG cartridges have been mounted, but only 6 out of 8.
  • The perforated plate has been dry-fitted
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  • The gun chamber has been baked at 250C with the NEG modules and the perforated screen only.
  • The NEGs were activated, first to 15 Amps while the chamber was at 250C, then a second time to 22 Amps while the chamber was back at room temperature.
  • The bake/activation cycle was performed to generate as much NEG dust as possible, which happens during the first two activation cycles per SAES paper.
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  • We assembled the electrode and even trained Yan on how to do that job!
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  • But we realized that the SS ball electrode did not get aperture for the shed widened from 1.25 in diameter to 2.16 in diameter!, So Bubba brought over the Nb, barrel-polished ball electrode which we assembled using the SS Yan's design shed, and that is why the ball and the shed reflect light differently in the picture below.
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