Antihydrogen atom formation in a CUSP trap towards spin polarized beams
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The ASACUSA collaboration has been making a path to realize high precision microwave spectroscopy of ground-state hyperfine transitions of antihydrogen atom in flight for stringent test of the CPT symmetry. For this purpose, an efficient extraction of a spin polarized antihydrogen beam is essential. In 2010, we have succeeded in synthesizing our first cold antihydrogen atoms employing a CUSP trap. The CUSP trap confines antiprotons and positrons simultaneously with its axially symmetric magnetic field to form antihydrogen atoms. It is expected that antihydrogen atoms in the low-field-seeking states are preferentially focused along the cusp magnetic field axis whereas those in the high-field-seeking states are defocused, resulting in the formation of a spin-polarized antihydrogen beam.
KeywordsAntihydrogen CPT invariance Atomic beam Rydberg atom
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- 2.Ramsay, N.F.: Atomic hydrogen hyperfine structure experiments. In: Kinoshita, T. (ed.) Quantum Electrodynamics, pp. 673–695. World Scientific, Singapore (1990)Google Scholar
- 3.Juhàsz, B.: Towards the measurement of the ground-state hyperfine splitting of antihydrogen. Hyperfine Interact. doi: 10.1007/s10751-011-0389-2