Cooling antihydrogen ions for the free-fall experiment GBAR

Abstract

We discuss an experimental approach allowing to prepare antihydrogen atoms for the GBAR experiment. We study the feasibility of all necessary experimental steps: The capture of incoming ${\bar{\mathrm{H}}}^{+}$ ions at keV energies in a deep linear RF trap, sympathetic cooling by laser cooled Be${}^{+}$ ions, transfer to a miniaturized trap and Raman sideband cooling of an ion pair to the motional ground state, and further reducing the momentum of the wavepacket by adiabatic opening of the trap. For each step, we point out the experimental challenges and discuss the efficiency and characteristic times, showing that capture and cooling are possible within a few seconds.

10 pages, 5 figures

References in corpus (5)

• Observation of the 1S0 - 3P0 clock transition in 27Al+
• Sympathetic Cooling of Mixed Species Two-Ion Crystals for Precision Spectroscopy
• Deterministic Ultracold Ion Source targeting the Heisenberg Limit
• Quantum reflection of antihydrogen from Casimir potential above matter slabs
• Whispering Gallery States of Antihydrogen

Cited by in corpus (5)

• Ultracold anions for high-precision antihydrogen experiments
• Analysis of the timing of freely falling antihydrogen
• Towards Sympathetic Cooling of Single (Anti-)Protons
• Quantum interference measurement of the free fall of anti-hydrogen
• Improving the statistical analysis of anti-hydrogen free fall by using near edge events