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TT: Fachverband Tiefe Temperaturen

TT 7: Superconductivity: Cryodetectors

TT 7.3: Vortrag

Montag, 31. März 2014, 10:00–10:15, HSZ 03

Design and commissioning of a X-ray spectroscopy detector setup at storage rings — •Pascal Scholz and Saskia Kraft-Bermuth — Justus-Liebig-Universität, Gießen, Germany

X-ray spectroscopy of highly-charged heavy ions in the X-ray regime, commonly performed at storage ring facilities, provides a sensitive test of quantum electrodynamics. Silicon microcalorimeters have already demonstrated their potential for such experiments. To improve performance, a cryogen-free cryostat has been commissioned, which is equipped with a side arm with the detector mounted on a cold finger centered in the front of this side arm. For inherent correction of Doppler shifts, a new detector array with improved design and pixels for high as well as low x-ray energies will be equipped. This upgrade will improve the lateral sensitivity and detector resolution in the further analysis. The design serves also as a benchmark for a larger array with approximately 100 pixels. The design and performance results will be presented with this talk.