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Q: Fachverband Quantenoptik und Photonik

Q 4: Precision spectroscopy of atoms and ions (joint session A/Q)

Q 4.20: Poster

Montag, 20. September 2021, 16:30–18:30, P

High-Resolution Microcalorimeter Measurement of X-Ray Transitions in He-like Uranium at CRYRING@ESR — •Felix Martin Kröger^1,2,3, Steffen Allgeier⁴, Andreas Fleischmann⁴, Marvin Friedrich⁴, Alexandre Gumberidze³, Marc Oliver Herdrich^1,2,3, Daniel Hengstler⁴, Patricia Kuntz⁴, Michael Lestinsky³, Bastian Löher³, Esther Babette Menz^1,2,3, Philip Pfäfflein^1,2,3, Uwe Spillmann³, Günter Weber^1,2,3, Christian Enss⁴, and Thomas Stöhlker^1,2,3 — ¹HI Jena, Fröbelstieg 3, Jena, Germany — ²IOQ Jena, FSU Jena, Max-Wien-Platz 1, Jena, Germany — ³GSI, Planckstraße 1, Darmstadt, Germany — ⁴KIP, RKU Heidelberg, Im Neuenheimer Feld 227, Heidelberg, Germany

We present the first application of metallic magnetic calorimeter detectors for high resolution X-ray spectroscopy at the electron cooler of CRYRING@ESR, the low energy storage ring of GSI, Darmstadt. Within the experiment, X-ray radiation emitted as a result of recombination events between the cooler electrons and a stored beam of U ⁹¹⁺ ions was studied. For this purpose, two maXs detectors were positioned under observation angles of 0^∘ and 180^∘ with respect to the ion beam axis. This report will focus on details of the experimental setup, its performance and its integration into the storage ring environment.

This research has been conducted in the framework of the SPARC collaboration, experiment E138 of FAIR Phase-0 supported by GSI. We acknowledge substantial support by ErUM-FSP APPA (BMBF n^∘ 05P19SJFAA).