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Physics - Particle and Nuclear Physics | Detection of Trapped Antihydrogen

Detection of Trapped Antihydrogen

Series: Springer Theses

Hydomako, Richard

2013, XVIII, 169 p. 101 illus., 4 illus. in color.

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  • A landmark thesis describing the first ever trapping of antihydrogen atoms in CERN's ALPHA apparatus
  • Opens the way to crucial tests of fundamental theories
  • Nominated as an outstanding contribution by the University of Calgary
In 2010, the ALPHA collaboration achieved a first for mankind: the stable, long-term storage of atomic antimatter, a project carried out a the Antiproton Decelerator facility at CERN. A crucial element of this observation was a dedicated silicon vertexing detector used to identify and analyze antihydrogen annihilations. This thesis reports the methods used to reconstruct the annihilation location. Specifically, the methods used to identify and extrapolate charged particle tracks and estimate the originating annihilation location are outlined. Finally, the experimental results demonstrating the first-ever magnetic confinement of antihydrogen atoms are presented. These results rely heavily on the silicon detector, and as such, the role of the annihilation vertex reconstruction is emphasized.

Content Level » Research

Keywords » ALPHA Silicon Detector at CERN - Antihydrogen Detection - Antihydrogen Trapping - Antiproton Annihilation - Cosmic Ray Background Suppression - Magnetic Confinement of Antihydrogen - Vertexing Detector

Related subjects » Applied & Technical Physics - Atomic, Molecular, Optical & Plasma Physics - Particle and Nuclear Physics

Table of contents 

Theory.- The ALPHA Apparatus and Procedures.- The ALPHA Silicon Detector.- Event Reconstruction in the ALPHA Detector.- Rejection of Background Events.- The Trapping of Antihydrogen.

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