Difference between revisions of "GTS meeting 10 02 17"

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* Why is photocathode lifetime limited (100 - 300 C)?  
 
* Why is photocathode lifetime limited (100 - 300 C)?  
- Laser heating and QE decay
+
# Laser heating and QE decay
- Laser size too small?
+
# Laser size too small?
  
  

Latest revision as of 09:08, 2 October 2017

  • 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