1998•Unpublished venueRequires access
Challenges of Operating a Photocathode RF Gun Injector
X.J. Wang, M. Babzien, I. Ben‐Zvi, Robert Malone, J. F. Sheehan, J. Skaritka, T. Srinivasan-Rao, Martin H. Woodle, V. Yakimenko, L. H. Yü
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Abstract
The major challenges in operating a photocathode RF gun based injector are its stability and reliability. This report discuss two important subjects which affect the performance of photocathode RF gun, high efficiency photocathode and experimental technique characterizing the RF gun injector. A Mg cathode was manufactured and routinely operated at 100 MV/m field with quantum efficiency on the order of 10-3. By measuring the photoelectron charge as function of RF gun phase, we can monitor the RF gun driving laser pulse length variation, and measuring the laser arrive time variation on the cathode with Pico-second accuracy. 1