A detailed ray-tracing simulation of the high resolution microbeam at the AIFIRA facility
Identifieur interne : 000590 ( Hal/Checkpoint ); précédent : 000589; suivant : 000591A detailed ray-tracing simulation of the high resolution microbeam at the AIFIRA facility
Auteurs : F. Andersson [France] ; Ph. Barberet [France] ; S. Incerti [France] ; Ph. Moretto [France]Source :
Abstract
The AIFIRA (Applications Interdisciplinaires des Faisceaux d'Ions en Région Aquitaine) ion beam facility at the CENBG (Centre d'Etudes Nucléaires de Bordeaux-Gradignan) is being equipped with a high demagnification focused microbeam line. This beam line, which is under its final stage of development, should allow focusing of protons and alpha particles down to a sub-micrometer resolution, and is therefore referred to as a “nanobeam line” in the following paper. We present the complete beam transport simulation along the chosen configuration for the nanobeam line, which consists of a long working distance doublet-triplet of Oxford Microbeam Ltd. OM-50® quadrupoles. These simulations have been performed using the Geant4 Monte Carlo simulation toolkit, which has been previously validated for ray-tracing studies in the design of quadrupole microbeam systems. They include a fine modelling of the quadupole magnetic field, based on the analytical Enge's model, which is compared to a classical square field model and to a high granularity tri-dimensional field map computed with the OPERA3D® software. The beam emittance model is parameterized from experimental measurements performed directly on the HVEE Singletron® at the AIFIRA facility, allowing the computation of the beam transmitted current along the nanobeam line. Grid shadow images, acquired from simulations, for system alignment purposes and beam deflection studies on target are presented as well.
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This beam line, which is under its final stage of development, should allow focusing of protons and alpha particles down to a sub-micrometer resolution, and is therefore referred to as a “nanobeam line” in the following paper. We present the complete beam transport simulation along the chosen configuration for the nanobeam line, which consists of a long working distance doublet-triplet of Oxford Microbeam Ltd. OM-50® quadrupoles. These simulations have been performed using the Geant4 Monte Carlo simulation toolkit, which has been previously validated for ray-tracing studies in the design of quadrupole microbeam systems. They include a fine modelling of the quadupole magnetic field, based on the analytical Enge's model, which is compared to a classical square field model and to a high granularity tri-dimensional field map computed with the OPERA3D® software. The beam emittance model is parameterized from experimental measurements performed directly on the HVEE Singletron® at the AIFIRA facility, allowing the computation of the beam transmitted current along the nanobeam line. Grid shadow images, acquired from simulations, for system alignment purposes and beam deflection studies on target are presented as well.</div></front></TEI><hal api="V3"><titleStmt><title xml:lang="en">A detailed ray-tracing simulation of the high resolution microbeam at the AIFIRA facility</title><author role="aut"><persName><forename type="first">F.</forename><surname>Andersson</surname></persName><email></email><idno type="halauthor">240054</idno><affiliation ref="#struct-121"></affiliation></author><author role="aut"><persName><forename type="first">Ph.</forename><surname>Barberet</surname></persName><email></email><idno type="halauthor">91859</idno><affiliation ref="#struct-121"></affiliation></author><author role="aut"><persName><forename type="first">S.</forename><surname>Incerti</surname></persName><email></email><idno type="halauthor">9305</idno><affiliation ref="#struct-121"></affiliation></author><author role="aut"><persName><forename type="first">Ph.</forename><surname>Moretto</surname></persName><email></email><idno type="halauthor">62222</idno><affiliation ref="#struct-121"></affiliation></author><editor role="depositor"><persName><forename>Ludovic</forename><surname>Le Noan</surname></persName><email>mas@cenbg.in2p3.fr</email></editor></titleStmt><editionStmt><edition n="v1" type="current"><date type="whenSubmitted">2008-01-08 12:41:55</date><date type="whenModified">2009-04-07 15:15:39</date><date type="whenReleased">2008-01-08 13:36:21</date><date type="whenProduced">2008-04</date></edition><respStmt><resp>contributor</resp><name key="121466"><persName><forename>Ludovic</forename><surname>Le Noan</surname></persName><email>mas@cenbg.in2p3.fr</email></name></respStmt></editionStmt><publicationStmt><distributor>CCSD</distributor><idno type="halId">in2p3-00202872</idno><idno type="halUri">http://hal.in2p3.fr/in2p3-00202872</idno><idno type="halBibtex">andersson:in2p3-00202872</idno><idno type="halRefHtml">Nuclear Instruments and Methods in Physics Research Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2008, B266, pp.1653-1658. <10.1016/j.nimb.2007.11.020></idno><idno type="halRef">Nuclear Instruments and Methods in Physics Research Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2008, B266, pp.1653-1658. <10.1016/j.nimb.2007.11.020></idno></publicationStmt><seriesStmt><idno type="stamp" n="CENBG">Centre d'Etudes Nucléaires de Bordeaux Gradignan</idno><idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno><idno type="stamp" n="UNIV-BORDEAUX1">Université Bordeaux I - Sciences Technologies</idno><idno type="stamp" n="IN2P3">Institut National de Physique Nucléaire et de Physique des Particules</idno></seriesStmt><notesStmt><note type="audience" n="0">Not set</note><note type="popular" n="0">No</note><note type="peer" n="1">Yes</note></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">A detailed ray-tracing simulation of the high resolution microbeam at the AIFIRA facility</title><author role="aut"><persName><forename type="first">F.</forename><surname>Andersson</surname></persName><idno type="halAuthorId">240054</idno><affiliation ref="#struct-121"></affiliation></author><author role="aut"><persName><forename type="first">Ph.</forename><surname>Barberet</surname></persName><idno type="halAuthorId">91859</idno><affiliation ref="#struct-121"></affiliation></author><author role="aut"><persName><forename type="first">S.</forename><surname>Incerti</surname></persName><idno type="halAuthorId">9305</idno><affiliation ref="#struct-121"></affiliation></author><author role="aut"><persName><forename type="first">Ph.</forename><surname>Moretto</surname></persName><idno type="halAuthorId">62222</idno><affiliation ref="#struct-121"></affiliation></author></analytic><monogr><idno type="halJournalId" status="INCOMING">71951</idno><title level="j">Nuclear Instruments and Methods in Physics Research Research Section B: Beam Interactions with Materials and Atoms</title><imprint><publisher>Elsevier</publisher><biblScope unit="volume">B266</biblScope><biblScope unit="pp">1653-1658</biblScope><date type="datePub">2008-04</date></imprint></monogr><idno type="doi">10.1016/j.nimb.2007.11.020</idno></biblStruct></sourceDesc><profileDesc><langUsage><language ident="en">English</language></langUsage><textClass><classCode scheme="classification">41.75.-i;41.75.Ak;41.85.-p;41.85.Ew;41.85.Ja;41.85.Lc;41.85.Si</classCode><classCode scheme="halDomain" n="phys.phys.phys-acc-ph">Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph]</classCode><classCode scheme="halDomain" n="phys.phys.phys-ins-det">Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]</classCode><classCode scheme="halDomain" n="phys.phys.phys-bio-ph">Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph]</classCode><classCode scheme="halTypology" n="ART">Journal articles</classCode></textClass><abstract xml:lang="en">The AIFIRA (Applications Interdisciplinaires des Faisceaux d'Ions en Région Aquitaine) ion beam facility at the CENBG (Centre d'Etudes Nucléaires de Bordeaux-Gradignan) is being equipped with a high demagnification focused microbeam line. This beam line, which is under its final stage of development, should allow focusing of protons and alpha particles down to a sub-micrometer resolution, and is therefore referred to as a “nanobeam line” in the following paper. We present the complete beam transport simulation along the chosen configuration for the nanobeam line, which consists of a long working distance doublet-triplet of Oxford Microbeam Ltd. OM-50® quadrupoles. These simulations have been performed using the Geant4 Monte Carlo simulation toolkit, which has been previously validated for ray-tracing studies in the design of quadrupole microbeam systems. They include a fine modelling of the quadupole magnetic field, based on the analytical Enge's model, which is compared to a classical square field model and to a high granularity tri-dimensional field map computed with the OPERA3D® software. The beam emittance model is parameterized from experimental measurements performed directly on the HVEE Singletron® at the AIFIRA facility, allowing the computation of the beam transmitted current along the nanobeam line. Grid shadow images, acquired from simulations, for system alignment purposes and beam deflection studies on target are presented as well.</abstract></profileDesc></hal></record>Pour manipuler ce document sous Unix (Dilib)
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