Particle Accelerator Focus Automation

José Lopes, Jorge Rocha, Luís Redondo, João Cruz

Research output: Contribution to journalArticle

Abstract

The Laboratório de Aceleradores e Tecnologias de Radiacaõ (LATR) at the Campus Tecnológico e Nuclear, of Instituto Superior Técnico (IST) has a horizontal electrostatic particle accelerator based on the Van de Graaff machine which is used for research in the area of material characterization. This machine produces alfa (He+) and proton (H+) beams of some μA currents up to 2 MeV/q energies. Beam focusing is obtained using a cylindrical lens of the Einzel type, assembled near the high voltage terminal. This paper describes the developed system that automatically focuses the ion beam, using a personal computer running the LabVIEW software, a multifunction input/output board and signal conditioning circuits. The focusing procedure consists of a scanning method to find the lens bias voltage which maximizes the beam current measured on a beam stopper target, which is used as feedback for the scanning cycle. This system, as part of a wider start up and shut down automation system built for this particle accelerator, brings great advantages to the operation of the accelerator by turning it faster and easier to operate, requiring less human presence, and adding the possibility of total remote control in safe conditions.

Original languageEnglish
Pages (from-to)208-212
Number of pages5
JournalMeasurement Science Review
Volume17
Issue number4
DOIs
Publication statusPublished - 1 Aug 2017

Fingerprint

particle accelerators
automation
Particle accelerators
Automation
Lenses
Signal conditioning circuits
lenses
Scanning
remote control
scanning
personal computers
conditioning
Remote control
Bias voltage
beam currents
Personal computers
Ion beams
high voltages
Electrostatics
Protons

Keywords

  • beam focus
  • ion source
  • LabVIEW
  • Particle accelerator

Cite this

Lopes, José ; Rocha, Jorge ; Redondo, Luís ; Cruz, João. / Particle Accelerator Focus Automation. In: Measurement Science Review. 2017 ; Vol. 17, No. 4. pp. 208-212.
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Particle Accelerator Focus Automation. / Lopes, José; Rocha, Jorge; Redondo, Luís; Cruz, João.

In: Measurement Science Review, Vol. 17, No. 4, 01.08.2017, p. 208-212.

Research output: Contribution to journalArticle

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