CERN Accelerating science

Article
Title	Emission Mechanisms in a Photocathode RF Gun
Author(s)	Hui-Han, Jang ; Bähr, J W ; Flöttmann, Klaus ; Grabosch, H J ; Hartrott, Michael ; Krasilnikov, Mikhail ; Michelato, Paolo ; Miltchev, Velizar ; Monaco, Laura ; Oppelt, Anne ; Petrosyan, Bagrat ; Riemann, S ; Roensch, Juliane ; Schreiber, Siegfried ; Sertore, Daniele ; Staykov, Lazar ; Stephan, Frank
Affiliation	(BESSY GmbH, Berlin) ; (DESY Zeuthen, Zeuthen) ; (DESY, Hamburg) ; (INFN/LASA, Segrate (MI) ; (Uni HH, Hamburg)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.856
Subject category	Accelerators and Storage Rings
Abstract	In photocathode rf guns, emission mechanisms at the photocathode play a crucial role in the overall beam dynamics. A low bunch charge as well as a short Gaussian bunch profile allow us to study the beam dynamics depending on emission phase without space charge force. This paper presents experimental and simulation studies toward detailed understanding of the photo emission and secondary emission processes at the cathode.