Thermal emittance and response time of a cesium antimonide photocathode

Luca Cultrera, Ivan Bazarov, Adam Bartnik, Bruce Dunham, Siddharth Karkare, Richard Merluzzi, Matthew Nichols

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Abstract

Measurements of the intrinsic emittance and response time of a Cs 3Sb photocathode are presented. The emittance is obtained with a solenoid scan technique using a high voltage dc photoemission gun. Photoemission response time is evaluated using a RF deflecting cavity synchronized to a picosecond laser pulse train. We find that Cs3Sb has both small mean transverse energy, 160 10 meV at 532 nm laser wavelength, and a prompt response time (below the resolution of our measurement) making it a suitable material for high brightness electron photoinjectors.

Original languageEnglish (US)
Article number152110
JournalApplied Physics Letters
Volume99
Issue number15
DOIs
StatePublished - Oct 10 2011

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Cultrera, L., Bazarov, I., Bartnik, A., Dunham, B., Karkare, S., Merluzzi, R., & Nichols, M. (2011). Thermal emittance and response time of a cesium antimonide photocathode. Applied Physics Letters, 99(15), [152110]. https://doi.org/10.1063/1.3652758