Doppler-cooled ions in a compact reconfigurable Penning trap

Brian J. McMahon, Curtis Volin, Wade G. Rellergert, and Brian C. Sawyer
Phys. Rev. A 101, 013408 – Published 8 January 2020

Abstract

We report the design and experimental demonstration of a compact, reconfigurable Penning ion trap constructed with rare-earth permanent magnets placed outside of a trap vacuum enclosure. We describe the observation of Doppler laser cooling of ions in a permanent magnet Penning trap. We detail a method for quantifying and optimizing the trap magnetic-field uniformity in situ using a thermal beam of neutral Ca40 precursor atoms. Doppler laser cooling of Ca+40 is carried out at 0.65 T, and side-view images of trapped ion fluorescence show crystalline order for both two- and three-dimensional arrays. Measured Ca+40 trap frequencies confirm the magnetic-field characterization with neutral Ca40. The compact trap described here enables a variety of cold ion experiments with low size, weight, power, and cost requirements relative to traditional electromagnet-based Penning traps.

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  • Received 4 September 2019

DOI:https://doi.org/10.1103/PhysRevA.101.013408

©2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Brian J. McMahon*, Curtis Volin, Wade G. Rellergert, and Brian C. Sawyer

  • Georgia Tech Research Institute, Atlanta, Georgia 30332, USA

  • *brian.mcmahon@gtri.gatech.edu

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Issue

Vol. 101, Iss. 1 — January 2020

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