Towards Antihydrogen Trapping and Spectroscopy at ALPHA
Atomic Physics
2011-05-03 v1 High Energy Physics - Experiment
Plasma Physics
Abstract
Spectroscopy of antihydrogen has the potential to yield high-precision tests of the CPT theorem and shed light on the matter-antimatter imbalance in the Universe. The ALPHA antihydrogen trap at CERN's Antiproton Decelerator aims to prepare a sample of antihydrogen atoms confined in an octupole-based Ioffe trap and to measure the frequency of several atomic transitions. We describe our techniques to directly measure the antiproton temperature and a new technique to cool them to below 10 K. We also show how our unique position-sensitive annihilation detector provides us with a highly sensitive method of identifying antiproton annihilations and effectively rejecting the cosmic-ray background.
Cite
@article{arxiv.1105.0037,
title = {Towards Antihydrogen Trapping and Spectroscopy at ALPHA},
author = {Eoin Butler and Gorm. B. Andresen and Mohammad. D. Ashkezari and Marcelo Baquero-Ruiz and William Bertsche and Paul D. Bowe and Crystal C. Bray and Claudio L. Cesar and Steven Chapman and Michael Charlton and Joel Fajans and Tim Friesen and Makoto C. Fujiwara and David R. Gill and Jeffrey S. Hangst and Walter N. Hardy and Ruyugo S. Hayano and Michael E. Hayden and Andrew J. Humphries and Richard Hydomako and Svante Jonsell and Leonid Kurchaninov and Ricardo Lambo and Niels Madsen and Scott Menary and Paul Nolan and Konstantin Olchanski and Art Olin and Alexander Povilus and Petteri Pusa and Francis Robicheaux and Eli Sarid and Daniel M. Silveira and Chukman So and James W. Storey and Robert I. Thompson and Dirk P. van der Werf and Dean Wilding and Jonathan S. Wurtele and Yasunori Yamazaki},
journal= {arXiv preprint arXiv:1105.0037},
year = {2011}
}
Comments
10 pages, 5 figures