UCB Bialkali Cathode Process Program

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Presentation transcript:

UCB Bialkali Cathode Process Program Small window cathode development, 1.22” samples Process samples to optimize QE and bandpass Na2KSb cathodes Cathode test run #6 Testing B33, B33+ITO, B33+MgO/ITO substrates Four sample holder 2ea in process chamber 1 B33 2 B33+ITO 1 B33+ITO+MgO in each

Cathode test run #6A, Na2KSb cathode, SbPt B33, B33+ITO, B33+MgO/ITO substrates Substrates with ITO are very bad

Cathode test run #6B, Na2KSb cathode, Sb B33, B33+ITO, B33+MgO/ITO substrates Substrates with ITO are very bad

Cathode test run #6B, Na2KSb cathode B33+ITO+MgO substrate, 1” aperture, 395nm light, QE uniformity 599 595 597 591 592

Cathode test run #6B, Na2KSb cathode 845 B33 substrate, 1” aperture, 395nm light, QE uniformity 839 842 848 822