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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/S2079562922030022</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-223</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>Физика газового разряда и плазмы</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Gas Discharge and Plasma Physics</subject></subj-group></article-categories><title-group><article-title>Система сверхвысокочастотной предыонизации токамака МИФИСТ-0</article-title><trans-title-group xml:lang="en"><trans-title>Microwave Preionization System of the MEPHIST-0 Tokamak</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>Алиева</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Alieva</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пришвицын</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Prishvitsyn</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ефимов</surname><given-names>Н. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Efimov</surname><given-names>N. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крат</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krat</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><email xlink:type="simple">SAKrat@mephi.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исакова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Isakova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Казиев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaziev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воробьев</surname><given-names>Г. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorobyov</surname><given-names>G. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курнаев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurnaev</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><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>2023</year></pub-date><pub-date pub-type="epub"><day>19</day><month>12</month><year>2023</year></pub-date><volume>14</volume><issue>1</issue><fpage>87</fpage><lpage>93</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Алиева А.И., Пришвицын А.С., Ефимов Н.Е., Крат С.А., Исакова А.С., Казиев А.В., Воробьев Г.М., Курнаев В.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Алиева А.И., Пришвицын А.С., Ефимов Н.Е., Крат С.А., Исакова А.С., Казиев А.В., Воробьев Г.М., Курнаев В.А.</copyright-holder><copyright-holder xml:lang="en">Alieva A.I., Prishvitsyn A.S., Efimov N.E., Krat S.A., Isakova A.S., Kaziev A.V., Vorobyov G.M., Kurnaev V.A.</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/223">https://npe.elpub.ru/jour/article/view/223</self-uri><abstract><p>Сверхвысокочастотная предыонизация – распространенный метод смягчения условий пробоя газа в токамаках. Цель исследования заключалась в том, чтобы протестировать разработанные системы токамака МИФИСТ-0, а также изучить предварительную предыонизационную плазму. Анализ предплазменного разряда были осуществлен с помощью поясов Роговского, оптической спектроскопии и зондов Ленгмюра. Дополнительно использовалась быстрая ПЗС-камера для регистрации эмиссии во время разряда. Полученные результаты показали, что разряд предварительной плазмы был локализован на определенном расстоянии внутри вакуумной камеры, удовлетворяющем условию существования электронно-циклотронного резонанса. Оцененная плотность плазмы и электронная температура составили 5.5 ⋅ 1016 м–3 и 8 эВ соответственно.</p></abstract><trans-abstract xml:lang="en"><p>Microwave preionization is a common technique used for electron-cyclotron resonance assisted plasma start-up in spherical tokamaks. The aim of the study is to test features of the developed MEPhIST tokamak preionization system. The study explores the preliminary preionization plasma. The gas discharge parameters were measured using Rogowski coils, optical spectroscopy, and Langmuir probes. Additionally, CCD – camera captured the emission evolution during discharge. The results obtained demonstrate that the plasma discharge was localized in the discharge vessel. The calculated plasma density and electron temperature were 5.5 × 1016 m–3 and 8 eV, respectively. The study enables a better understanding of the preionization process in the MEPhIST-0.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>предыонизация</kwd><kwd>плазма</kwd><kwd>диагностика плазмы</kwd><kwd>ЭЦР-пробой</kwd><kwd>токамак</kwd></kwd-group><kwd-group xml:lang="en"><kwd>preionization</kwd><kwd>plasma</kwd><kwd>plasma diagnostics</kwd><kwd>ECR-assisted start-up</kwd><kwd>tokamak</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа была выполнена при поддержке АО “Наука и инновации” (номер договора 313/1755-Д от 20.09.2019).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Regan S.P., et al. // Nucl. Fusion. 2005. V. 45 (10). P. S245.</mixed-citation><mixed-citation xml:lang="en">Regan S.P., et al. // Nucl. Fusion. 2005. V. 45 (10). P. 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