Imaging antimatter with a Micromegas detector

TitleImaging antimatter with a Micromegas detector
Publication TypeJournal Article
Year of Publication2018
AuthorsMäckel, V, Radics, B, Dupre, P, Higaki, H, Kanai, Y, Kuroda, N, Matsuda, Y, Nagata, Y, Tajima, M, Widmann, E, Yamazaki, Y
JournalNuclear Inst. and Methods in Physics Research, B
Keywords3D tracking, Annihilation, Antiproton, Micromegas tracker, Track reconstruction

The ASACUSA collaboration aims at measuring the ground state hyperfine splitting of antihydrogen for probing fundamental symmetries. A cryogenic trap for mixing antiprotons and positrons serves as an antihydrogen source for in-flight spectroscopy. In order to be able to monitor the antihydrogen formation process, a dedicated Micromegas tracking detector has been designed and built to record the annihilation distribution in the trap. In this paper, we present the first results from antiproton annihilation data recorded with the Micromegas, together with a description of the event reconstruction algorithm.