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|Title: ||Single-shot longitudinal bunch profile measurements at FLASH using electro-optic detection: Experiment, simulation and validation|
|Authors: ||Steffen, B.|
Knabbe, E. A.
Gillespie, W. A.
Phillips, P. J.
Jamison, S. P.
van der Meer, A. F. G.
MacLeod, Allan M.
|Affiliation: ||University of Abertay Dundee. School of Computing and Creative Technologies|
|Keywords: ||Free-electron lasers|
|Issue Date: ||2007|
|Publisher: ||Joint Accelerator Conferences Website|
|Type: ||Conference item|
|Refereed: ||Peer reviewed|
|Rights: ||(c)FEL07. Available from JACoW at http://cern.ch/AccelConf/f07/PAPERS/WEBAU04.PDF|
|Citation: ||Steffen, B. et al. 2007. Single-shot longitudinal bunch profile measurements at FLASH using electro-optic detection: Experiment, simulation and validation. Proceedings of FEL 2007, Novosibirsk, Russia|
|Abstract: ||At the superconducting linac of FLASH at DESY, we have installed an electro-optic (EO) experiment for singleshot, non-destructive measurements of the longitudinal electric charge distribution of individual electron bunches. The time profile of the electric bunch field is electrooptically encoded onto a chirped titanium-sapphire laser pulse. In the decoding step, the profile is retrieved either from a cross-correlation of the encoded pulse with a 30 fs laser pulse, obtained from the same laser (electrooptic temporal decoding, EOTD), or from the spectral intensity of the transmitted probe pulse (electro-optic spectral decoding, EOSD). At FLASH, the longitudinally compressed electron bunches have been measured during FEL operation with a resolution of better than 50 fs. The electrooptic process in gallium phosphide was numerically simulated using as input data the bunch shapes determined with a transverse-deflecting RF structure. In this contribution, we present electro-optically measured bunch profiles and compare them with the simulation.|
|Appears in Collections:||Computing & Engineering Systems Collection|
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