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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/S2079562924060253</article-id><article-id custom-type="edn" pub-id-type="custom">EWOEZU</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-522</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>Математическое моделирование в ядерных технологиях</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Mathematical Modeling in Nuclear Technologies</subject></subj-group></article-categories><title-group><article-title>ОСОБЕННОСТИ БЫСТРОЙ РЕГУЛИРОВКИ ВЫХОДНОЙ ЭНЕРГИИ В ЛИНЕЙНОМ УСКОРИТЕЛЕ ДЛЯ ПРОТОННОЙ ТЕРАПИИ</article-title><trans-title-group xml:lang="en"><trans-title>FEATURES OF THE FAST VARIATION OF THE OUTPUT ENERGY IN A LINEAR ACCELERATOR FOR PROTON THERAPY</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>Овчинникова</surname><given-names>Л. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ovchinnikova</surname><given-names>L. Yu.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дуркин</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Durkin</surname><given-names>A. P.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Парамонов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Paramonov</surname><given-names>V. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт ядерных исследований РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute for Nuclear Research, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>19</day><month>12</month><year>2025</year></pub-date><volume>16</volume><issue>4</issue><fpage>467</fpage><lpage>471</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Овчинникова Л.Ю., Дуркин А.П., Парамонов В.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Овчинникова Л.Ю., Дуркин А.П., Парамонов В.В.</copyright-holder><copyright-holder xml:lang="en">Ovchinnikova L.Y., Durkin A.P., Paramonov V.V.</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/522">https://npe.elpub.ru/jour/article/view/522</self-uri><abstract><p>Суммируются результаты исследований процессов при быстрой регулировке выходной энергии линейного ускорителя для протонно-лучевой терапии за время одного ВЧ импульса. Рассматриваются как особенности формирования необходимого импульса ВЧ питания, так и распространения ВЧ импульса в безынерционной дисперсной структуре на бегущей волне. Особое внимание уделено динамике частиц в нестационарном электромагнитном ВЧ поле. Применение рассматриваемого метода регулировки позволит многократно повысить скорость сканирования по глубине объекта облучения.</p></abstract><trans-abstract xml:lang="en"><p>Results of studying processes accompanying the fast variation of the output energy of a medical proton linac during one microwave pulse have been summarized. Features of both the formation of a required microwave power pulse and the propagation of the microwave pulse in an inertialess dispersed traveling wave structure have been analyzed. Particular attention is paid to beam dynamics in a nonstationary electromagnetic microwave pulse. The application of the variation method under consideration will greatly increase speed of scanning along the depth in an irradiated object.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>протонная терапия</kwd><kwd>TW структура</kwd><kwd>линейный ускоритель</kwd><kwd>моделирование динамики пучка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>proton therapy</kwd><kwd>TW linear accelerator</kwd><kwd>beam dynamics simulation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы признательны А.А. Коломийцу за предоставленные данные о характеристиках сгустков протонов ЛУ в режиме номинального ускорения. Также авторы выражают благодарность С.М. Полозову за полезные замечания.</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">Degiovanni A., Stabile P., Ungaro D. // Proc. NAPAC'16. 2017. 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