| Paper |
Title |
Page |
| TUP045 |
Photothermal Cathode Measurements at the Advanced Photon Source
|
349 |
| |
- Y.-E. S. Sun, J. W. Lewellen
ANL, Argonne, Illinois
- D. W. Feldman
IREAP, College Park, Maryland
|
|
| |
The Advanced Photon Source (APS) ballistic bunch compression (BBC) injector presently uses an M-type thermionic dispenser cathode as a photocathode. This “photothermal” cathode offers substantial advantages over conventional metal photocathodes, including easy replacement and easy cleaning via the cathode’s built-in heater. We present the results of quantum efficiency measurements as a function of cathode heater power, laser pulse energy, and applied rf field strength.
|
|