Two-symmetry Penning-Ioffe trap for antihydrogen cooling and spectroscopy

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 977; p. 164279
• Main Authors: Tardiff, E., Fan, X., Gabrielse, G., Grzonka, D., Hamley, C., Hessels, E.A., Jones, N., Khatri, G., Kolthammer, W.S., Martinez Zambrano, D., Meisenhelder, C., Morrison, T., Nottet, E., Novitski, E., Storry, C.H.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 11-10-2020
• Subjects: Antihydrogen; ATRAP; Ioffe Trap; Neutral Particle Trap; Antihydrogen; Neutral Particle Trap; Ioffe Trap; ATRAP
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2020.164279

High-accuracy spectroscopic comparisons of trapped antihydrogen atoms (H¯) and hydrogen atoms (H) promise to stringently test the fundamental CPT symmetry invariance of the standard model of particle physics. ATRAP’s nested Penning-Ioffe trap was developed for such studies. The first of its unique features is that its magnetic Ioffe trap for H¯atoms can be switched between quadrupole and octupole symmetries. The second is that it allows laser and microwave access perpendicular to the central axis of the traps.