Difference between revisions of "GTS meeting 7 25 16"
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(Created page with "* 1 mA semi-stable running for nearly 7 hours: [https://logbooks.jlab.org/entry/3412699] ** At 300kV, with anode bias at +1500 V, and ** Better beam focusing and centering in...") |
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Revision as of 09:51, 25 July 2016
- 1 mA semi-stable running for nearly 7 hours: [1]
- At 300kV, with anode bias at +1500 V, and
- Better beam focusing and centering in the viewers, rather than on the solenoids.
- We think is the latter that made the greatest contribution to high current beam
- Even so, we still see sudden "photocathode-anode arcing" that reduces the QE on the illuminated area, but only slightly
- The cathode is amazingly robust!
