GTS meeting 10 02 17

From Ciswikidb
Jump to: navigation, search
  • High current runs


  • Why is photocathode lifetime limited (100 - 300 C)?
  1. Laser heating and QE decay
  2. Laser size too small?


  • Remaining tasks before shutdown on Wednesday Oct. 4, 2017:
  1. Measure lifetime with a larger laser size (~rms=0.5 mm)
  2. Measure lifetime for: 0 A, 50 A, 100 A, 150 A, 200 A, 300 A, 400 A (Gun HV=300 kV, I=3.0 mA)
  3. Lifetime vs biased anode