DocumentCode
3199459
Title
Commissioning of TTF2 Bunch Compressor for the Femtosecond (FS) FEL Mode Operation
Author
Yujong Kim ; Son, Dongchul ; Kim, Y.
Author_Institution
TTF2 VUV-FEL team, DESY, D-22603 Hamburg, Germany, E-Mail: Yujong.Kim@DESY.de
fYear
2005
fDate
16-20 May 2005
Firstpage
991
Lastpage
993
Abstract
By the help of nonlinearity in the longitudinal phase space, the VUV-FEL at the TESLA Test Facility phase 2 (TTF2) is under operating in the femtosecond (fs) FEL mode which generates coherent and ultra-bright SASE source with photon pulse duration time of around 20 fs (FWHM) and wavelength of around 32 nm. For the fs FEL mode operation, bunch length of electron beams should be compressed by two bunch compressors to have a leading spike in the longitudinal beam density distribution or peak current. The required peak current at the spike is higher than about 1.0 kA, and the spike length is shorter than around 200 fs (FWHM). In this paper, we describe our commissioning experiences to optimize two TTF2 bunch compressors for the fs FEL mode operation.
Keywords
Acceleration; Delay; Electron beams; Length measurement; Linear particle accelerator; Magnetic heads; Pulse generation; Radio frequency; Test facilities; Undulators;
fLanguage
English
Publisher
ieee
Conference_Titel
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN
0-7803-8859-3
Type
conf
DOI
10.1109/PAC.2005.1590635
Filename
1590635
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