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Mg based photocathodes for high brightness RF photoinjectors |
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| Authors: | L Cultrera G Gatti A Perrone C Ristoscu A Fiori |
| Institution: | a National Institute of Nuclear Physics-INFN, National Laboratories of Frascati, Frascati, Roma, Italy b Physics Department of University of Lecce and INFN of Lecce, Lecce, Italy c National Institute for Laser, Plasma and Radiation Physics, Magurele, Bucharest, Romania d Physics Department of University of Tor Vergata, Roma, Italy |
| Abstract: | Advanced high brightness radio frequency (RF) gun injectors require photocathodes with a fast response, high quantum efficiency (QE) and good surface uniformity. Metal films deposited by various techniques on the gun back wall could satisfy these requirements. A new deposition technique has been recently proposed, i.e. pulsed laser ablation. Several Mg samples have been deposited by this technique: the emission performance and morphological changes induced on the cathode surface during laser activation are compared and discussed. |
| Keywords: | Magnesium Pulsed laser deposition Quantum efficiency Photocathode |
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