Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 58: Instrumentierung

HK 58.4: Vortrag

Freitag, 21. März 2014, 11:45–12:00, HZ 10

A Low-Energy Antiproton Detector Prototype for AFIS — •Lingxin Meng, Daniel Greenwald, Alexander Hahn, Philipp Hauptmann, Igor Konorov, Martin Losekamm, Stephan Paul, Thomas Pöschl, and Dieter Renker — Technische Universität München

Antiprotons are produced in interactions of primary cosmic rays with earth’s exosphere, where a fraction of them will be confined in the geomagnetic field in the inner van Allen Belt. The antiproton-to-proton flux ratio predicted by theory is in good agreement with recent results from the South Atlantic Anomaly (SAA) published by the PAMELA collaboration. We have designed the AFIS (Antiproton Flux in Space) project in order to extend the measurable range of antiprotons towards the low-energy region. In scope of this project a small antiproton detector consisting of scintillating fibers and silicon photomultipliers is being developed as payload for a CubeSat traversing the SAA in Low Earth Orbit.

For the proof of concept we have built a prototype called “CubeZero” which completed its first test using pion and proton beams at PSI, Switzerland. Our primary goal was to investigate on the performance of tracking and Bragg peak identification in hardware and software. Analysis of detector performance based on data taken during this beam test will be presented in this talk.

This project is supported by the DFG Excellence Cluster Universe (Exc 153).