Motor-driven autonomous system for controlling beamline iris diaphragm apertures

At the collinear apparatus for laser spectroscopy and applied sciences (COALA) at TU Darmstadt, collinear laser spectroscopy is applied to perform high-precision measurements of atomic transition frequencies and high voltages in an ultra-high vacuum beamline. In such laser spectroscopy beamlines, ir...

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Main Authors: Daniel Pinheiro Leal, Jörg Krämer, Wilfried Nörtershäuser
Format: Article
Language:English
Published: Elsevier 2021-04-01
Series:HardwareX
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2468067220300754
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author Daniel Pinheiro Leal
Jörg Krämer
Wilfried Nörtershäuser
author_facet Daniel Pinheiro Leal
Jörg Krämer
Wilfried Nörtershäuser
author_sort Daniel Pinheiro Leal
collection DOAJ
description At the collinear apparatus for laser spectroscopy and applied sciences (COALA) at TU Darmstadt, collinear laser spectroscopy is applied to perform high-precision measurements of atomic transition frequencies and high voltages in an ultra-high vacuum beamline. In such laser spectroscopy beamlines, iris diaphragms are used to reduce ion beam divergence, and to ensure a good laser and ion beam overlap. Since the system that controls the diameter of the apertures presents strong hysteresis, an automated adjustment is desirable to enhance reproducibility in the aperture settings, and to reduce the effort in performing measurements where different diameters are required, especially in alternating collinear and anti-collinear measurements. To achieve this, the Iris Mover system was designed and implemented. The Iris Mover system consists of motor-driven iris apertures which can be easily controlled by users through a computer, and which accounts for hysteresis effects. Here, we explain the design process of the Iris Mover and demonstrate and discuss its functionality.
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spelling doaj.art-8f163a1a30104c74ab43c2d3bf74321a2022-12-21T22:30:59ZengElsevierHardwareX2468-06722021-04-019e00166Motor-driven autonomous system for controlling beamline iris diaphragm aperturesDaniel Pinheiro Leal0Jörg Krämer1Wilfried Nörtershäuser2Division of Engineering Science, University of Toronto, CanadaInstitut für Kernphysik, Technische Universität Darmstadt, Germany; Corresponding author.Institut für Kernphysik, Technische Universität Darmstadt, GermanyAt the collinear apparatus for laser spectroscopy and applied sciences (COALA) at TU Darmstadt, collinear laser spectroscopy is applied to perform high-precision measurements of atomic transition frequencies and high voltages in an ultra-high vacuum beamline. In such laser spectroscopy beamlines, iris diaphragms are used to reduce ion beam divergence, and to ensure a good laser and ion beam overlap. Since the system that controls the diameter of the apertures presents strong hysteresis, an automated adjustment is desirable to enhance reproducibility in the aperture settings, and to reduce the effort in performing measurements where different diameters are required, especially in alternating collinear and anti-collinear measurements. To achieve this, the Iris Mover system was designed and implemented. The Iris Mover system consists of motor-driven iris apertures which can be easily controlled by users through a computer, and which accounts for hysteresis effects. Here, we explain the design process of the Iris Mover and demonstrate and discuss its functionality.http://www.sciencedirect.com/science/article/pii/S2468067220300754Collinear laser spectroscopyBeamlineAutomated measurementsArduinoMotorized iris diaphragm
spellingShingle Daniel Pinheiro Leal
Jörg Krämer
Wilfried Nörtershäuser
Motor-driven autonomous system for controlling beamline iris diaphragm apertures
HardwareX
Collinear laser spectroscopy
Beamline
Automated measurements
Arduino
Motorized iris diaphragm
title Motor-driven autonomous system for controlling beamline iris diaphragm apertures
title_full Motor-driven autonomous system for controlling beamline iris diaphragm apertures
title_fullStr Motor-driven autonomous system for controlling beamline iris diaphragm apertures
title_full_unstemmed Motor-driven autonomous system for controlling beamline iris diaphragm apertures
title_short Motor-driven autonomous system for controlling beamline iris diaphragm apertures
title_sort motor driven autonomous system for controlling beamline iris diaphragm apertures
topic Collinear laser spectroscopy
Beamline
Automated measurements
Arduino
Motorized iris diaphragm
url http://www.sciencedirect.com/science/article/pii/S2468067220300754
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