Towards antihydrogen trapping and spectroscopy at ALPHA
2011 (English)In: Hyperfine Interactions, ISSN 0304-3843, E-ISSN 1572-9540, Vol. 199, no 1, 39-48 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2011. Vol. 199, no 1, 39-48 p.
IdentifiersURN: urn:nbn:se:su:diva-72038DOI: 10.1007/s10751-011-0299-3OAI: oai:DiVA.org:su-72038DiVA: diva2:488451