Detection of Antihydrogen Annihilations with a Si-Micro and Pure CSI Detector
Abstract
In 2002, the ATHENA collaboration reported the creation and detection of cold (~15 K) antihydrogen atoms1. The observation was based on the complete reconstruction of antihydrogen annihilations, simultaneous and spatially correlated annihilations of an antiproton and a positron. Annihilation byproducts are measured with a cylindrically symmetric detector system consisting of two layers of double sided Si-micro-strip modules that are surrounded by 16 rows of 12 pure CsI crystals (13×17.5×17 mm3). This paper gives a brief overview of the experiment, the detector system, and event reconstruction.
- Publication:
-
Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications
- Pub Date:
- July 2004
- DOI:
- 10.1142/9789812702708_0069
- arXiv:
- arXiv:physics/0401034
- Bibcode:
- 2004apsp.conf..473J
- Keywords:
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- Physics - Instrumentation and Detectors
- E-Print:
- 7 pages, 5 figures