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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">npe</journal-id><journal-title-group><journal-title xml:lang="ru">Ядерная физика и инжиниринг</journal-title><trans-title-group xml:lang="en"><trans-title>Nuclear Physics and Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5629</issn><issn pub-type="epub">2079-5637</issn><publisher><publisher-name>МИФИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.56304/S2079562923030284</article-id><article-id custom-type="edn" pub-id-type="custom">PVCRIM</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-394</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Ускорители заряженных частиц для ядерных технологий</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Charged Particles Accelerators for Nuclear Technologies</subject></subj-group></article-categories><title-group><article-title>ОПТИМИЗАЦИЯ ГЕОМЕТРИИ КАТОДНОГО ЭЛЕКТРОДА</article-title><trans-title-group xml:lang="en"><trans-title>Optimization of Cathode Electrode Geometry</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самароков</surname><given-names>Н. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Samarokov</surname><given-names>N. Yu.</given-names></name></name-alternatives><email xlink:type="simple">nikita.samarokov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский ядерный университет “МИФИ”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>22</day><month>12</month><year>2024</year></pub-date><volume>15</volume><issue>4</issue><fpage>368</fpage><lpage>371</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Самароков Н.Ю., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Самароков Н.Ю.</copyright-holder><copyright-holder xml:lang="en">Samarokov N.Y.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://npe.elpub.ru/jour/article/view/394">https://npe.elpub.ru/jour/article/view/394</self-uri><abstract><p>Для медицинского ускорителя на 6 МэВ был разработан компактный модифицированный источник электронов. Особенность данной пушки состоит в существенно уменьшенном конечном размере, за счет изменения схемы подвода питания. В данной работе было изучено проникновение магнитного поля внутрь катодного электрода в зависимости от радиуса отверстий для откачки и их количества, а также возможность последующего захвата электронов.</p></abstract><trans-abstract xml:lang="en"><p>A compact modified thermionic electron source was developed for the 6 MeV medical accelerator. This gun features significantly reduced size, due to a change in the power supply feeder scheme. In this work, the penetration of the magnetic field into the cathode electrode was studied depending on the radius of the holes for pumping and their number, as well as the possibility of subsequent capture of electrons by it.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термоэлектронная пушка</kwd><kwd>магнитные поля</kwd><kwd>траектория пучка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermionic gun</kwd><kwd>magnetic fields</kwd><kwd>beam trajectory</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Basyl D.S. et al. // Proc. 7th Intl. Particle Accelerator Conf. 2016. P. 1794. https://doi.org/10.18429/JACoW-IPAC2016-TUPOW023</mixed-citation><mixed-citation xml:lang="en">Basyl D.S. et al. // Proc. 7th Intl. Particle Accelerator Conf. 2016. 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