Detection of Cold Antihydrogen Annihilation

Journal Article · Wed Oct 26 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2130205· OSTI ID:20726703

Zhang, Z; Goldenbaum, F; Grzonka, D; Oelert, W; Sefzick, T ^[1]

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1. Institut fuer Kernphysik, Forschungszentrum Juelich GmbH, 52425 Juelich (Germany)

The ATRAP experiment at the CERN antiproton decelerator AD aims for a test of the CPT invariance by a high precision comparison of the 1s-2s transition between the hydrogen and the antihydrogen atom.The experimental studies are performed at two separate installations, ATRAP-I, a system with severe space limitation, where routinely antihydrogen was produced and ATRAP-II, which will start full operation within the next AD running period. ATRAP-II includes a much larger solenoid allowing the installation of an extended detection system as well as an optimized Ioffe trap. The antihydrogen annihilation detector system consists of several layers of scintillating fibers, counts the antihydrogen atoms and determines the annihilation vertex of the atoms. This diagnostic element will allow to optimize the production of cold antihydrogen sufficiently to permit the optical observations and measurements.Measurements are in progress to check the performance and specifications of the antihydrogen annihilation detector. Extensive Monte Carlo simulations concerning the track reconstruction have been started and will be continued using the program GEANT4.

• OSTI ID: 20726703
• Journal Information: AIP Conference Proceedings, Vol. 796, Issue 1; Conference: LEAP '05: 8. international conference on low energy antiproton physics, Bonn (Germany), 16-22 May 2005; Other Information: DOI: 10.1063/1.2130205; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCURACY
ANNIHILATION
ANTIPROTONS
CERN
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CPT THEOREM
HADRONIC ATOMS
HYDROGEN
LAYERS
MONTE CARLO METHOD
OPERATION
PARTICLE TRACKS
PERFORMANCE
SOLENOIDS
SOLID SCINTILLATION DETECTORS
TRAPS