CERN Accelerating science

Article
Title	Status of the 3½ Cell Superconducting RF Gun Project in Rossendorf
Author(s)	Xiang, R ; Büttig, Hartmut ; Evtushenko, Pavel ; Janssen, Dietmar ; Lehnert, Ulf ; Michel, Peter ; Möller, Karsten ; Schneider, Christof ; Schurig, Rico ; Staufenbiel, Friedrich ; Teichert, Jochen ; Kamps, Thorsten ; Lipka, Dirk ; Volkov, Vladimir ; Stephan, J ; Lehmann, W D ; Will, Ingo
Affiliation	(FZR, Dresden BESSY GmbH, Berlin IfE, Dresden IKST, Drsden BINP SB RAS, Novosibirsk MBI, Berlin)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1081
Subject category	Accelerators and Storage Rings
Abstract	In the paper, we report on the status and progress of the superconducting rf gun project in Rossendorf. The gun is designed for cw operation mode with 1mA current and 10 MeV electron energy. The gun will be installed at the ELBE superconducting electron linear accelerator. It will have a 3½ cell niobium cavity operating at 1.3 GHz. The cavity consists of three cells with TESLA geometry and a specially designed half-cell in which the photocathode will be placed. Two Nb cavities, with RRR 300 and 40 respectively, will be finished at the beginning of 2005. After delivery, the rf tests will be performed and the treatment of the cavities will be started. At the same time, the design of the cryostat is finished and the fabrication of its components is under way. Further activities are the design of the diagnostic beam line, the assembling of the new photocathode preparation system, and the upgrade of the 262 nm driver laser system.