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HK: Fachverband Physik der Hadronen und Kerne

HK 18: Instrumentation VI

HK 18.6: Vortrag

Mittwoch, 1. September 2021, 18:00–18:15, H2

A new calibration system for 180^∘ electron scattering experiments — •Maximilian Spall, Maxim Singer, Johann Isaak, Jonny Birkhan, Peter von Neumann-Cosel, and Norbert Pietralla — Institut für Kernphysik, Technische Universität Darmstadt

An electron scattering experiment at 180^∘ is an excellent tool to investigate magnetic excitations of nuclei, due to the minimum of the longitudinal differential cross section at this angle. The 180^∘ electron scattering system at the QCLAM spectrometer [1] is presently upgraded. A new system for the calibration of the scattering angles has been designed and is currently under construction, since precise knowledge of the horizontal and vertical scattering angles is necessary to reconstruct the experimental scattering angle. With the help of the new calibration system, it is possible to measure the transport matrix for the whole magnetic system, including the QCLAM spectrometer, without the need to change to a normal configuration as described in [1]. In this talk the new calibration system will be presented.
Supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 279384907 - SFB 1245.

[1] C. Lüttge et al., Large-aperture system for high-resolution 180^∘ electron scattering. Nuclear Inst. and Methods in Physics Research, A. 366, 325-331 (1995).