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Optical fibre dosimeter for SASE FEL undulators

 
: Henschel, H.; Kuhnhenn, J.; Körfer, M.; Wulf, F.

:
Volltext urn:nbn:de:0011-n-263624 (216 KByte PDF)
MD5 Fingerprint: e788e8569613e0847fb71a71ce655575
Erstellt am: 26.01.2005


Peters, A. ; Gesellschaft für Schwerionenforschung mbH -GSI-, Darmstadt:
DIPAC 2003. Proceedings
Darmstadt, 2003
S.248-250
European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators (DIPAC) <6, 2003, Mainz>
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer INT ()
optical fibre dosimetry; FEL; radiation sensor; optical fibre radiation effect

Abstract
Single pass Free Electron Lasers (FELs) based on selfamplified spontaneous-emission (SASE) are developed for high-brightness and short wavelength user applications. These light sources are related to short undulator periods which can be realized with permanent magnet designs. Unfortunately, the material is radiation sensitive and the undulators require a protection system. To monitor particle losses directly inside the undulator gap and to guarantee full magnetic performance for a long time, an optical fiber dosimeter has been developed and operated at the TESLA Test Facility (TTF). The dosimeter system allows online dose monitoring and beam particle loss optimisation.

: http://publica.fraunhofer.de/dokumente/N-26362.html