SMuK 2023 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 10: Structure and Dynamics of Nuclei II
HK 10.4: Talk
Monday, March 20, 2023, 17:30–17:45, SCH/A215
Implementation of silicon photomultipliers to detect single photons — •Imke Lopp1, Laura Renth1, Bernhard Maaß2, Patrick Müller1, Julian Palmes1, Julien Spahn1, and Wilfried Nörtershäuser1 — 1Institut für Kernphysik, TU Darmstadt, Germany — 2Argonne National Laboratory, Chicago, IL, USA
Precise and sensitive measurements in collinear laser spectroscopy require detectors with a high detection efficiency for single photons. At the same time, the dark count rate of the detector and the generated background, e.g., from scattered light, should be as low as possible. Common systems use a combination of mirrors or lenses and photomultiplier tubes.
We investigated whether silicon photodiodes (SiPMs) are suitable for this application. Due to their square detection area, the photodiodes can be better arranged to cover the optimal detection area than photomultiplier tubes with their circular detection area. Collinear laser spectroscopy on 12C4+ and Sr+ ions was used to compare the detectors in the UV and optical region, respectively. Funded by BMBF, contract 05P21RDFN1.