Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 37: Kosmische Strahlung 4

T 37.4: Talk

Tuesday, March 28, 2017, 11:45–12:00, H 4

Radio emission from a particle cascade in a dense medium and in magnetic fields: Modelling and its experimental validation with the SLAC T-510 experiment — •Anne Zilles for the SLAC T-510 collaboration — Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, Deutschland

The SLAC T-510 experiment was designed to compare controlled laboratory measurements of radio emission of particle showers to particle-level simulations, which are relied upon in ultra-high-energy cosmic-ray air shower detection. Established formalisms for the simulation of radio emission physics, the "end-point" formalism and the "ZHS" formalism, lead to results which can be explained by a superposition of magnetically induced transverse current radiation and the Askaryan (charge-excess) effect. Here, we present the comparison of the results of Geant4 simulations, including the formalisms, and measured data of the SLAC T-510 experiment within the scope of e.g. linearity with magnetic field and angular distribution of the signal amplitude showing that microscopic simulations reproduce the measurements within uncertainties and give a very good description of the data.