Radio frequency elevator for a pulsed positron beam

Radio frequency elevator for a pulsed positron beam

An elevator increases the potential energy of a particle beam with respect to ground potential without any alteration of kinetic energy and other beam parameters. This elevator is necessary for the implementation of the Munich Scanning Positron Microscope (SPM) at the intense positron source NEPOMUC...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2016-06, Vol.821, p.40-43
Hauptverfasser: Dickmann, Marcel, Mitteneder, Johannes, Kögel, Gottfried, Egger, Werner, Sperr, Peter, Ackermann, Ulrich, Piochacz, Christian, Dollinger, Günther
Format: Artikel
Sprache:eng
Schlagworte:
Beams (radiation)
Elevators
Grounds
Kinetic energy
Linear accelerator
Particle beams
Positron microscope
Positrons
Potential energy
Pulsed positron micro beam
RF elevator
Scanning
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Beschreibung
Zusammenfassung:An elevator increases the potential energy of a particle beam with respect to ground potential without any alteration of kinetic energy and other beam parameters. This elevator is necessary for the implementation of the Munich Scanning Positron Microscope (SPM) at the intense positron source NEPOMUC at the research reactor FRM II in Munich. The principles of the rf elevator for pure electrostatically guided positrons are described. Measurements of beam quality behind the elevator are reported, which confirm that after the implementation of elevator and SPM at NEPOMUC the SPM can be operated at a considerably improved resolution (~0.3μm) and event rate (~3.7kHz) compared to the laboratory based β+-source.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2016.03.011