Münster 2017 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Poster

HK 27.37: Poster

Tuesday, March 28, 2017, 16:45–18:45, F Foyer

A silicon vertex tracker for experiments with light particles at SAMURAI — •Florian Dufter, Roman Gernhäuser, Laura Fabbietti, Sebastian Reichert, Christian Berner, and Lukas Werner for the SAMURAI19 collaboration — Technische Universität München

The tetraneutron has attracted a lot of experimental and theoretical attention in recent years. The observation of a 4-neutron ground state resonance could deliver information about a three nucleons interaction and may contribute to further understanding of the equation of state in neutron stars. The ⁴n ground state resonance is created by using the ⁸He(p,pα)⁴n knock-out reaction. Two layers of silicon detectors determine the position of the reaction vertex in a liquid hydrogen target. The energy of the resonance is determined by the full kinematic reconstruction of the scattered charged particles with the SAMURAI spectrometer at the RIKEN facility in Japan. We developed a new setup of highly segmented 100 µm thin silicon detectors for vertex reconstruction in a 5 cm LH₂ target. The detector concept, its implementation and tests of the first prototypes as well as a GEANT4 simulation of the expected performance will be presented. This work is supported by the SFB1245 of TU Darmstadt (DFG) and the DFG Cluster of Excellence "Origin and Structure of the Universe".