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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/S2079562925010014</article-id><article-id custom-type="edn" pub-id-type="custom">EHMDLV</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-527</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>ИССЛЕДОВАНИЕ СПИН-ФЛИППИНГА ПРИ ПРИБЛИЖЕНИИ К РЕЗОНАНСНОЙ ЭНЕРГИИ В ВОЗМУЩЕННОЙ СТРУКТУРЕ NICA С БАЙПАСАМИ</article-title><trans-title-group xml:lang="en"><trans-title>INVESTIGATION OF SPIN-FLIPPING WHEN APPROACHING THE RESONANT ENERGY IN AN IMPERFECT NICA-BYPASS LATTICE</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>Аксентьев</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Aksentev</surname><given-names>A. E.</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>Мельников</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Melnikov</surname><given-names>A. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сеничев</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Senichev</surname><given-names>Y. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колокольчиков</surname><given-names>С. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolokolchikov</surname><given-names>S. D.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт ядерных исследований РАН;&#13;
Национальный исследовательский ядерный университет “МИФИ”;&#13;
Московский физико-технический институт (национальный исследовательский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute for Nuclear Research, Russian Academy of Sciences;&#13;
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute);&#13;
Moscow Institute of Physics and Technology (National Research University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт ядерных исследований РАН;&#13;
Московский физико-технический институт (национальный исследовательский университет);&#13;
Институт теоретической физики им. Л.Д. Ландау РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute for Nuclear Research, Russian Academy of Sciences;&#13;
Moscow Institute of Physics and Technology (National Research University);&#13;
Landau Institute for Theoretical Physics, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт ядерных исследований РАН;&#13;
Московский физико-технический институт (национальный исследовательский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute for Nuclear Research, Russian Academy of Sciences;&#13;
Moscow Institute of Physics and Technology (National Research University)</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>505</fpage><lpage>509</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Аксентьев А.Е., Мельников А.А., Сеничев Ю.В., Колокольчиков С.Д., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Аксентьев А.Е., Мельников А.А., Сеничев Ю.В., Колокольчиков С.Д.</copyright-holder><copyright-holder xml:lang="en">Aksentev A.E., Melnikov A.A., Senichev Y.V., Kolokolchikov S.D.</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/527">https://npe.elpub.ru/jour/article/view/527</self-uri><abstract><p>Предметом представленного исследования является процесс изменения ориентации оси поляризации пучка, которое проводится в рамках разработки техники обнаружения электрического дипольного момента дейтрона на существующем ускорителе, в частности на ускорителе NICA (ОИЯИ, Дубна), при его функционировании в режиме накопительного кольца. Исследование входит в состав разработки процедуры калибровки так называемого эффективного фактора Лоренца пучка; как таковое, оно сопряжено с другими задачами по ориентировке оси поляризации в ускорителе. Процесс исследуется по двум вопросам: (1) определение скорости переориентации оси, требуемой для выполнения условий эксперимента, (2) влияние на поляризационную когерентность пучка. По результатам исследования даны предварительные ответы на поставленные вопросы.</p></abstract><trans-abstract xml:lang="en"><p>The present investigation studies the process of change of the beam polarization axis. It is carried out in view of developing a measurement technique to discover the electric dipole moment of the deuteron using an existing particle accelerator, in particular the NICA collider facility (JINR, Dubna), when the latter operates in a storage ring regime. The investigation is part of the effort to devise a procedure to calibrate the so-called effective Lorentz-factor of the beam and is connected with other tasks concerning the re-orientation of the beam’s polatization axis. The process is studies with respect to two questions: (1) to determine the speed of the re-orientation required to fulfill the experimental conditions, (2) the effects it might have on the beam’s spin-coherence. The investigation results provide preliminary answers to these questions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>поляризованные пучки</kwd><kwd>управление спином</kwd><kwd>адиабатичность</kwd><kwd>накопительное кольцо</kwd><kwd>электрический дипольный момент</kwd></kwd-group><kwd-group xml:lang="en"><kwd>polarized beams</kwd><kwd>spin manipulation</kwd><kwd>adiabaticity</kwd><kwd>storage ring</kwd><kwd>electric dipole moment</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность за поддержку данной работы Российским научным фондом (РНФ) по гранту 22-42-04419.</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">Farley F.J.M. et al. // Phys. Rev. Lett. 2004. V. 93 (5). P. 052001. https://doi.org/10.1103/PhysRevLett.93.052001</mixed-citation><mixed-citation xml:lang="en">Farley F.J.M. et al. // Phys. Rev. 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