Instrument for spatially resolved simultaneous measurements of forces and currents in particle beams

The article presents a device for spatially resolved and simultaneous measurements of forces and currents in particle beams, especially in beams composed of ions and neutral atoms. The forces are exerted by the impinging beam particles on a plane circular conductive target plate of 20 mm diameter mo...

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Bibliographic Details
Published in:Review of scientific instruments 2015-01, Vol.86 (1), p.015107-015107
Main Authors: Spethmann, A, Trottenberg, T, Kersten, H
Format: Article
Language:English
Subjects:
BEAM CURRENTS
Coils
Compensation
FARADAY CUPS
Force measurement
Ion beams
Ion sources
KEV RANGE 01-10
MECHANICAL VIBRATIONS
Neutral atoms
PARTICLE ACCELERATORS
PARTICLE BEAMS
PERMANENT MAGNETS
Scientific apparatus & instruments
TIME MEASUREMENT
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Summary:The article presents a device for spatially resolved and simultaneous measurements of forces and currents in particle beams, especially in beams composed of ions and neutral atoms. The forces are exerted by the impinging beam particles on a plane circular conductive target plate of 20 mm diameter mounted on a pendulum with electromagnetic force compensation. The force measurement in the micronewton range is achieved by electromagnetic compensation by means of static Helmholtz coils and permanent magnets attached to the pendulum. Exemplary measurements are performed in the 1.2 keV beam of a broad beam ion source. The simultaneous measurements of forces and currents onto the same target are compared with each other and with Faraday cup measurements.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4905534