Gas detectors for x-ray lasers

We have developed different types of photodetectors that are based on the photoionization of a gas at a low target density. The almost transparent devices were optimized and tested for online photon diagnostics at current and future x-ray free-electron laser facilities on a shot-to-shot basis with a...

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Bibliographic Details
Published in:Journal of applied physics 2008-05, Vol.103 (9), p.094511-094511-7
Main Authors: Tiedtke, K., Feldhaus, J., Hahn, U., Jastrow, U., Nunez, T., Tschentscher, T., Bobashev, S. V., Sorokin, A. A., Hastings, J. B., Möller, S., Cibik, L., Gottwald, A., Hoehl, A., Kroth, U., Krumrey, M., Schöppe, H., Ulm, G., Richter, M.
Format: Article
Language:English
Subjects:
BESSY STORAGE RING
CALIBRATION
FREE ELECTRON LASERS
HARD X RADIATION
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
PHOTODETECTORS
PHOTOIONIZATION
PHOTON BEAMS
PHOTONS
X-RAY LASERS
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Summary:We have developed different types of photodetectors that are based on the photoionization of a gas at a low target density. The almost transparent devices were optimized and tested for online photon diagnostics at current and future x-ray free-electron laser facilities on a shot-to-shot basis with a temporal resolution of better than 100 ns. Characterization and calibration measurements were performed in the laboratory of the Physikalisch-Technische Bundesanstalt at the electron storage ring BESSY II in Berlin. As a result, measurement uncertainties of better than 10% for the photon-pulse energy and below 20   μ m for the photon-beam position were achieved at the Free-electron LASer in Hamburg (FLASH). An upgrade for the detection of hard x-rays was tested at the Sub-Picosecond Photon Source in Stanford.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.2913328