Design of a non-magnetic high-accuracy linear translator for use in vacuum systems

Andrew James Murray, Martyn J. Hussey, Alan Venables

    Research output: Contribution to journalArticlepeer-review


    A linear translator which employs no bearing lubricant and which can be used inside vacuum systems is described. The translator has been designed to accurately position an electron energy analyser within a new low-energy electron spectrometer, and so is constructed completely from non-magnetic components which are also UHV compatible. The translator uses a novel design combining a two-wedge displacement bearing which drives a translator constrained by a linear bearing. As such, the design is easily modified to provide very high translational accuracy by varying the wedge angle. In the present design, the deviation from linearity as a function of displacement has been determined to be less than ±4 νm mm-1 using laser interferometric techniques. © 2005 IOP Publishing Ltd.
    Original languageEnglish
    Pages (from-to)N19-N23
    JournalMeasurement Science and Technology
    Issue number7
    Publication statusPublished - 1 Jul 2005


    • Electron spectrometer
    • In-vacuum translator
    • Vacuum component
    • Xyz-translator


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