Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

A: Fachverband Atomphysik

A 22: Interaction with VUV and X-ray light

A 22.14: Poster

Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof

Gas Monitor Detector (GMD) for FEL, Synchrotron and Laser Sources — •Stephan Klumpp, Markus Braune, Andrey A. Sorokin, and Kai Tiedtke — FS-FL, DESY, Hamburg

The users at different radiation facilities like PETRA III, FLASH or ELI need for the evaluation of their data the intensity of the exciting radiation with low uncertainty, but measuring the intensity of a photon beam in the soft and hard x-ray regime is a non-trivial task. For soft x-rays like e.g. at P04, PETRA III, calibrated photo diodes will be sufficient to determine the intensity on absolute scale. They work on radiation sources with stable beam conditions. For the ever changing pulses of FLASH the non-destructive gas monitor detectors (GMD) were developed, but the concept is based on a high number of photons, above 10¹⁰ photons per pulse, to create data having a good signal-to-noise ratio. At a FEL this condition is fulfilled, but not necessarily for HHG laser sources, for example. The aim of the "Pulse Characterization and Control" (PUCCA) work package of the European Cluster of Advanced Laser Light Sources (EUCALL) is to realize, beside wavefront sensors and timing tools, an intensity monitor bridging from the soft to the hard x-ray regime and from low intensity sources, below 10⁶ photons per pulse, to high intensity sources, above 10¹⁰ photons per pulse. We will discuss different approaches to meet the challenge.

EUCALL and WP7 PUCCA has received funding from the European Unions Horizon 2020 research and innovation program under grant agreement No 654220.