Mainz 2017 – wissenschaftliches Programm

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SYAM: Symposium Atomic Anti-Matter Physics

SYAM 1: Atomic Anti-Matter Physics I

SYAM 1.3: Hauptvortrag

Donnerstag, 9. März 2017, 12:00–12:30, P 1

Antihydrogen physics at the ALPHA experiment — •Niels Madsen — Swansea University, Swansea, UK

The ALPHA experiment studies trapped antihydrogen. Antihydrogen is synthesised and trapped by merging cold samples of positrons and antiprotons inside an energised magnetic minimum neutral atom trap. A recent upgrade to the ALPHA apparatus - called ALPHA-2 - allows us to not only illuminate the trapped atoms with microwaves but also with laser-light. This setup allows for a number of exciting fundamental tests by measuring the internal quantum states of the trapped antihydrogen.

I will report on recent progress in trapping and synthesis of antihydrogen as well as progress towards precision measurements of the internal states of antihydrogen in both the microwave (hyperfine) and the laser regimes (1S-2S). In particular the 1S-2S transition holds great promise for precision comparisons of matter and antimatter as its frequency is known to about 15 decimal places in hydrogen.