Microgravity Science and Technology

, Volume 30, Issue 3, pp 155–163 | Cite as

Extreme Adiabatic Expansion in Micro-gravity: Modeling for the Cold Atomic Laboratory

  • C. A. Sackett
  • T. C. Lam
  • J. C. Stickney
  • J. H. Burke
Original Article
First Online:
Received:
Accepted:
  • 64 Downloads

Abstract

The upcoming Cold Atom Laboratory mission for the International Space Station will allow the investigation of ultracold gases in a microgravity environment. Cold atomic samples will be produced using evaporative cooling in a magnetic chip trap. We investigate here the possibility to release atoms from the trap via adiabatic expansion. We discuss both general considerations and a detailed model of the planned apparatus. We find that it should be possible to reduce the mean trap confinement frequency to about 0.2 Hz, which will correspond to a three-dimensional sample temperature of about 150 pK and a mean atom velocity of 0.1 mm/s.

Keywords

Ultracold atoms Cold atom laboratory Adiabatic cooling 
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Notes

Acknowledgements

This work was supported by the US National Aeronautics and Space Administration under contract number 1502012, and also by the US Air Force Research Laboratory. We are grateful to Rob Thompson of JPL for providing information about the CAL trap design, and thank both him and Eddie Moan for comments on the manuscript.

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2017

Authors and Affiliations

  1. 1.Physics DepartmentUniversity of VirginiaCharlottesvilleUSA
  2. 2.Space Dynamics LaboratoryNorth LoganUSA
  3. 3.US Air Force Research LaboratorySpace Vehicles DirectorateKirtland AFBUSA

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