Measurement of vacuum pressure with a magneto-optical trap: a pressure-rise method

Rowan Moore; Lucie Lee; Elizabeth Findlay; Lara Torralbo Campo; Graham David Bruce; Donatella Cassettari

doi:10.1063/1.4928154

Measurement of vacuum pressure with a magneto-optical trap: a pressure-rise method

Rowan Moore, Lucie Lee, Elizabeth Findlay, Lara Torralbo Campo, Graham David Bruce, Donatella Cassettari

Research output: Contribution to journal › Article › peer-review

Abstract

The lifetime of an atom trap is often limited by the presence of residual background gases in the vacuum chamber. This leads to the lifetime being inversely proportional to the pressure. Here we use this dependence to estimate the pressure and to obtain pressure rate-of-rise curves, which are commonly used in vacuum science to evaluate the performance of a system. We observe different rates of pressure increase in response to different levels of outgassing in our system. Therefore we suggest that this is a sensitive method which will find useful applications in cold atom systems, in particular where the inclusion of a standard vacuum gauge is impractical.

Original language	English
Article number	093108
Journal	Review of Scientific Instruments
Volume	86
Issue number	9
DOIs	https://doi.org/10.1063/1.4928154
Publication status	Published - 15 Sept 2015

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10.1063/1.4928154

PressureRise
Copyright 2015 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article has been accepted by Review of Scientific Instruments. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at http://dx.doi.org/10.1063/1.4928154
Accepted author manuscript, 582 KB

Adv atom traps for precise rotation sens: Leverhulme Award : Advanced Atom Traps
Cassettari, D. (PI)
The Leverhulme Trust
1/10/13 → 31/12/16
Project: Standard
GR/T08272/01: Towards superfluidity in degenerate Fermi gases
Cassettari, D. (PI)
EPSRC
1/04/05 → 28/02/09
Project: Standard

Cite this

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title = "Measurement of vacuum pressure with a magneto-optical trap: a pressure-rise method",

abstract = "The lifetime of an atom trap is often limited by the presence of residual background gases in the vacuum chamber. This leads to the lifetime being inversely proportional to the pressure. Here we use this dependence to estimate the pressure and to obtain pressure rate-of-rise curves, which are commonly used in vacuum science to evaluate the performance of a system. We observe different rates of pressure increase in response to different levels of outgassing in our system. Therefore we suggest that this is a sensitive method which will find useful applications in cold atom systems, in particular where the inclusion of a standard vacuum gauge is impractical.",

author = "Rowan Moore and Lucie Lee and Elizabeth Findlay and {Torralbo Campo}, Lara and Bruce, {Graham David} and Donatella Cassettari",

note = "This research was supported by UK EPSRC grant GR/T08272/01, IOP Scotland and the Leverhulme Trust Research Project Grant RPG-2013-074. ",

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AU - Moore, Rowan

AU - Lee, Lucie

AU - Findlay, Elizabeth

AU - Torralbo Campo, Lara

AU - Bruce, Graham David

AU - Cassettari, Donatella

N1 - This research was supported by UK EPSRC grant GR/T08272/01, IOP Scotland and the Leverhulme Trust Research Project Grant RPG-2013-074.

PY - 2015/9/15

Y1 - 2015/9/15

N2 - The lifetime of an atom trap is often limited by the presence of residual background gases in the vacuum chamber. This leads to the lifetime being inversely proportional to the pressure. Here we use this dependence to estimate the pressure and to obtain pressure rate-of-rise curves, which are commonly used in vacuum science to evaluate the performance of a system. We observe different rates of pressure increase in response to different levels of outgassing in our system. Therefore we suggest that this is a sensitive method which will find useful applications in cold atom systems, in particular where the inclusion of a standard vacuum gauge is impractical.

AB - The lifetime of an atom trap is often limited by the presence of residual background gases in the vacuum chamber. This leads to the lifetime being inversely proportional to the pressure. Here we use this dependence to estimate the pressure and to obtain pressure rate-of-rise curves, which are commonly used in vacuum science to evaluate the performance of a system. We observe different rates of pressure increase in response to different levels of outgassing in our system. Therefore we suggest that this is a sensitive method which will find useful applications in cold atom systems, in particular where the inclusion of a standard vacuum gauge is impractical.

U2 - 10.1063/1.4928154

DO - 10.1063/1.4928154

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Measurement of vacuum pressure with a magneto-optical trap: a pressure-rise method

Abstract

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Projects

Adv atom traps for precise rotation sens: Leverhulme Award : Advanced Atom Traps

GR/T08272/01: Towards superfluidity in degenerate Fermi gases

Cite this