Research and development of an electron beam focusing system for a high-brightness X-ray generator.
Identifieur interne : 000829 ( Ncbi/Merge ); précédent : 000828; suivant : 000830Research and development of an electron beam focusing system for a high-brightness X-ray generator.
Auteurs : Takeshi Sakai [Japon] ; Satoshi Ohsawa ; Noriyoshi Sakabe ; Takashi Sugimura ; Mitsuo IkedaSource :
- Journal of synchrotron radiation ; 2011.
English descriptors
- KwdEn :
- MESH :
- instrumentation : Synchrotrons.
- Electrons, Equipment Design, X-Rays.
Abstract
A new type of rotating anticathode X-ray generator, where an electron beam of up to 60 keV irradiates the inner surface of a U-shaped Cu anticathode, has achieved a beam brilliance of 130 kW mm(-2) (at 2.3 kW). A higher-flux electron beam is expected from simulation by optimizing the geometry of a combined-function-type magnet instead of the fringing field of the bending magnet. In order to minimize the size of the X-ray source the electron beam has been focused over a short distance by a new combined-function bending magnet, whose geometrical shape was determined by simulation using the Opera-3D, General Particle Tracer and CST-STUDIO codes. The result of the simulation clearly shows that the role of combined functions in both the bending and the steering magnets is important for focusing the beam to a small size. FWHM sizes of the beam are predicted by simulation to be 0.45 mm (horizontal) and 0.05 mm (vertical) for a 120 keV/75 mA beam, of which the effective brilliance is about 500 kW mm(-2) on the supposition of a two-dimensional Gaussian distribution. High-power tests have begun using a high-voltage 120 kV/75 mA power supply for the X-ray generator instead of 60 kV/100 mA. The beam focus size on the target will be verified in the experiments.
DOI: 10.1107/S0909049510029948
PubMed: 21169692
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A higher-flux electron beam is expected from simulation by optimizing the geometry of a combined-function-type magnet instead of the fringing field of the bending magnet. In order to minimize the size of the X-ray source the electron beam has been focused over a short distance by a new combined-function bending magnet, whose geometrical shape was determined by simulation using the Opera-3D, General Particle Tracer and CST-STUDIO codes. The result of the simulation clearly shows that the role of combined functions in both the bending and the steering magnets is important for focusing the beam to a small size. FWHM sizes of the beam are predicted by simulation to be 0.45 mm (horizontal) and 0.05 mm (vertical) for a 120 keV/75 mA beam, of which the effective brilliance is about 500 kW mm(-2) on the supposition of a two-dimensional Gaussian distribution. High-power tests have begun using a high-voltage 120 kV/75 mA power supply for the X-ray generator instead of 60 kV/100 mA. The beam focus size on the target will be verified in the experiments.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">21169692</PMID><DateCreated><Year>2010</Year><Month>12</Month><Day>20</Day></DateCreated><DateCompleted><Year>2011</Year><Month>04</Month><Day>04</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1600-5775</ISSN><JournalIssue CitedMedium="Internet"><Volume>18</Volume><Issue>1</Issue><PubDate><Year>2011</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Journal of synchrotron radiation</Title><ISOAbbreviation>J Synchrotron Radiat</ISOAbbreviation></Journal><ArticleTitle>Research and development of an electron beam focusing system for a high-brightness X-ray generator.</ArticleTitle><Pagination><MedlinePgn>53-7</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1107/S0909049510029948</ELocationID><Abstract><AbstractText>A new type of rotating anticathode X-ray generator, where an electron beam of up to 60 keV irradiates the inner surface of a U-shaped Cu anticathode, has achieved a beam brilliance of 130 kW mm(-2) (at 2.3 kW). A higher-flux electron beam is expected from simulation by optimizing the geometry of a combined-function-type magnet instead of the fringing field of the bending magnet. In order to minimize the size of the X-ray source the electron beam has been focused over a short distance by a new combined-function bending magnet, whose geometrical shape was determined by simulation using the Opera-3D, General Particle Tracer and CST-STUDIO codes. The result of the simulation clearly shows that the role of combined functions in both the bending and the steering magnets is important for focusing the beam to a small size. FWHM sizes of the beam are predicted by simulation to be 0.45 mm (horizontal) and 0.05 mm (vertical) for a 120 keV/75 mA beam, of which the effective brilliance is about 500 kW mm(-2) on the supposition of a two-dimensional Gaussian distribution. High-power tests have begun using a high-voltage 120 kV/75 mA power supply for the X-ray generator instead of 60 kV/100 mA. The beam focus size on the target will be verified in the experiments.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Sakai</LastName><ForeName>Takeshi</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>Accelerator Laboratory, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan. takeshi.sakai@kek.jp</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ohsawa</LastName><ForeName>Satoshi</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Sakabe</LastName><ForeName>Noriyoshi</ForeName><Initials>N</Initials></Author><Author ValidYN="Y"><LastName>Sugimura</LastName><ForeName>Takashi</ForeName><Initials>T</Initials></Author><Author ValidYN="Y"><LastName>Ikeda</LastName><ForeName>Mitsuo</ForeName><Initials>M</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2010</Year><Month>11</Month><Day>05</Day></ArticleDate></Article><MedlineJournalInfo><Country>Denmark</Country><MedlineTA>J Synchrotron Radiat</MedlineTA><NlmUniqueID>9888878</NlmUniqueID><ISSNLinking>0909-0495</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D004583">Electrons</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D004867">Equipment Design</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D017356">Synchrotrons</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000295">instrumentation</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D014965">X-Rays</DescriptorName></MeshHeading></MeshHeadingList><OtherID Source="NLM">PMC3004255</OtherID></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2010</Year><Month>5</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2010</Year><Month>7</Month><Day>27</Day></PubMedPubDate><PubMedPubDate PubStatus="epublish"><Year>2010</Year><Month>11</Month><Day>05</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2010</Year><Month>12</Month><Day>21</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2010</Year><Month>12</Month><Day>21</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>4</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">S0909049510029948</ArticleId><ArticleId IdType="doi">10.1107/S0909049510029948</ArticleId><ArticleId IdType="pubmed">21169692</ArticleId><ArticleId IdType="pmc">PMC3004255</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Japon</li></country></list><tree><noCountry><name sortKey="Ikeda, Mitsuo" sort="Ikeda, Mitsuo" uniqKey="Ikeda M" first="Mitsuo" last="Ikeda">Mitsuo Ikeda</name><name sortKey="Ohsawa, Satoshi" sort="Ohsawa, Satoshi" uniqKey="Ohsawa S" first="Satoshi" last="Ohsawa">Satoshi Ohsawa</name><name sortKey="Sakabe, Noriyoshi" sort="Sakabe, Noriyoshi" uniqKey="Sakabe N" first="Noriyoshi" last="Sakabe">Noriyoshi Sakabe</name><name sortKey="Sugimura, Takashi" sort="Sugimura, Takashi" uniqKey="Sugimura T" first="Takashi" last="Sugimura">Takashi Sugimura</name></noCountry><country name="Japon"><noRegion><name sortKey="Sakai, Takeshi" sort="Sakai, Takeshi" uniqKey="Sakai T" first="Takeshi" last="Sakai">Takeshi Sakai</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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