PPT Slide

*D.H. Dowell et al., NIM A356(1995)167-176.

5.50%

6.00%

6.50%

7.00%

7.50%

8.00%

0

20

40

60

80

100

120

140

Time (Minutes)

Quantum Efficiency (%)

0

20

40

60

80

100

120

140

Cathode Temperature (degrees C)

Temperature

Quantum Efficiency

Photocathode Lifetime

at an

Elevated Temperature in the RF Cavity Vacuum.