Abstract
Recent exciting progress in the preparation and manipulation of the motional quantum states of a single trapped proton enabled the first direct detection of the particle's spin state. Based on this success the proton magnetic moment μp was measured with ppm precision in a Penning trap with a superimposed magnetic field inhomogeneity. An improvement by an additional factor of 1000 in precision is possible by application of the so-called double Penning trap technique. In a recent paper we reported the first demonstration of this method with a single trapped proton, which is a major step towards the first direct high-precision measurement of μp. The techniques required for the proton can be directly applied to measure the antiproton magnetic moment μp. An improvement in precision of μp by more than three orders of magnitude becomes possible, which will provide one of the most sensitive tests of CPT invariance. To achieve this research goal we are currently setting up the Baryon Antibaryon Symmetry Experiment (BASE) at the antiproton decelerator (AD) of CERN.
Highlights
Recent citations- Lorentz-violating spinor electrodynamics and Penning traps Yunhua Ding and V
Typical axial frequencies in Penning traps are in the order of 1 MHz and the axial frequency shift induced by a spin flip is ∆νz,SF ≈ 0.4 μHz·B2
A group at Mainz developed the double Penning trap technique [15]. In this elegant scheme the precision measurement of νc and νL, and the detection of the spin state are separated to two traps, a precision trap (PT) with a homogeneous magnetic field, and an analysis trap (AT) with the strong magnetic bottle
Summary
- Lorentz-violating spinor electrodynamics and Penning traps Yunhua Ding and V. - Lorentz andCPTtests with hydrogen, antihydrogen, and related systems V. This content was downloaded from IP address 194.95.158.114 on 09/10/2018 at 10:09. XXVIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2013) IOP Publishing. Journal of Physics: Conference Series 488 (2014) 012033 doi:10.1088/1742-6596/488/1/012033.
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