Gießen 2024 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 72: Poster

HK 72.40: Poster

Thursday, March 14, 2024, 17:15–18:45, HBR 14: Foyer

Conversion electron spectrometer with stacked Si pad detectors and Mini-Orange — •Han-Bum Rhee, Steffen Meyer, Corinna Henrich, Ilja Homm, Martin von Tresckow, and Thorsten Kröll — TU Darmstadt, Darmstadt, Germany

Spectroscopy of conversion electrons, in particular from E0 transitions, requires thick Si detectors. Often this is achieved by the use of Si(Li) detectors for which several mm thickness are available. We investigate the use of stacks of Si pad detectors of 1-1.5 mm thickness which are more convenient to operate. The Si detectors are read out by a digital DAQ.

We intend to use these stacks to refurbish an electron spectrometer including a Mini-Orange (MO) magnetic transport system [1]. The MO consists of a set of 6 orange-slide shaped permanent magnets. The provided magnetic field focuses the electrons on the detector surface. Our setup also allows to cool the silicon detector to further increase its resolution.
Potential experiments will address e.g. E0 transitions between shape coexisting nuclear states.

The status and preliminary results with a ²⁰⁷Bi radioactive source are presented.

[1] D. Gassmann, Dissertation, LMU München, 2003