Thermal emittance and response time of a cesium antimonide photocathode

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

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

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
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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