Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 31: Outreach methods II (joint session T/HK)

HK 31.9: Talk

Wednesday, April 1, 2020, 18:30–18:45, H-HS VI

Mini NM and MT measurements on the German research vessel Polarstern — •Bernd Heber¹, Dennis Galsdorf¹, Konstantin Herbst¹, Vladimir Mares², Carolin Schwerdt³, Du Toit Strauss⁴, and Michael Walter³ — ¹Christian-Albrechts-Universität Kiel — ²Helmholtz Zentrum München, Neuherberg, Germany — ³Deutsches Elektronen-Synchrotron DESY Zeuthen, Germany — ⁴Center for Space Research, North-West University, Potchefstroom 2520, South Africa

Neutron Monitors (NMs) are ground-based devices to measure the variation of the intensity of the secondary neutrons from Galactic Cosmic Rays (GCRs). Since their measurements are influenced by the variable Earth magnetic field and the atmospheric conditions close to its position a detailed knowledge of the instrument sensitivity with geomagnetic latitude (rigidity), atmospheric pres- sure and the local environment is essential. Portable NMs, constructed by the North West University campus Potchefstroom, South Africa, and Muon Tele- scopes (MTs), constructed by DESY Zeuthen have been installed aboard the German research vessel Polarstern at the Neumeier III in Antarctica at sea level and at the Environmental Research Station Schneefernerhaus (UFS) Zugspitze at altitude of 2660 m a.s.l. Here we present the theoretical background that is utilized to determine the instrument response with respect to the geomagnetic position and the atmospheric pressure. The latter will be shown by investigating the measurements in Antarctica and on the Zugspitze. The dependence with the geomagnetic position is explored by analyzing Polarstern measurements.