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Particle accelerator focus automation

2017-08Journal article Restricted access
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dc.contributor.authorLopes, José
dc.contributor.authorRocha, Jorge
dc.contributor.authorLuis Redondo
dc.contributor.authorCruz, João
dc.date.accessioned2017-10-04T10:20:36Z
dc.date.available2017-10-04T10:20:36Z
dc.date.issued2017-08
dc.description.abstractThe Laboratorio de Aceleradores e Tecnologias de Radiacao (LATR) at the Campus Tecnologico e Nuclear, of Instituto Superior Tecnico (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 mu A 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.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLOPES, José; ROCHA, Jorge; REDONDO, Luís; CRUZ, João - Particle Accelerator Focus Automation. ISSN 1335-8871. Vol. 17, N.º 4 (2017), pp. 208-212pt_PT
dc.identifier.doi10.1515/msr-2017-0024pt_PT
dc.identifier.issn1335-8871
dc.identifier.urihttp://hdl.handle.net/10400.21/7411
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherDe Gruyter Openpt_PT
dc.relation.publisherversionhttps://www.degruyter.com/downloadpdf/j/msr.2017.17.issue-4/msr-2017-0024/msr-2017-0024.pdfpt_PT
dc.subjectParticle acceleratorpt_PT
dc.subjectLabVIEWpt_PT
dc.subjectBeam focuspt_PT
dc.subjectIon sourcept_PT
dc.titleParticle accelerator focus automationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage212pt_PT
oaire.citation.issue4pt_PT
oaire.citation.startPage208pt_PT
oaire.citation.titleMeasurement Science Reviewpt_PT
oaire.citation.volume17pt_PT
person.familyNameRedondo
person.givenNameLuis
person.identifier1017419
person.identifier.ciencia-id5E13-9730-4651
person.identifier.orcid0000-0002-2381-4627
person.identifier.ridA-3078-2009
person.identifier.scopus-author-id7003990641
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication1d3e3435-66c8-4d32-8ffc-d5798a8533a4
relation.isAuthorOfPublication.latestForDiscovery1d3e3435-66c8-4d32-8ffc-d5798a8533a4

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