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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/S2079562924050312</article-id><article-id custom-type="edn" pub-id-type="custom">DMNFPT</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-440</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 МЕХАНИЗМОВ УМЕНЬШЕНИЯ ДЕПОЛЯРИЗАЦИИ ПУЧКА ПРОТОНОВ ПРИ ИСПОЛЬЗОВАНИИ ВЧ СПИН-РОТАТОРА</article-title><trans-title-group xml:lang="en"><trans-title>INVESTIGATION OF METHODS TO DECREASE PROTON BEAM DEPOLARIZATION WHILE USING AN RF SPIN-ROTATOR</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>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><email xlink:type="simple">alexei.a.melnikov@gmail.com</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>Николаев</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolaev</surname><given-names>N. N.</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>Аксентьев</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Aksentyev</surname><given-names>A. E.</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>Сеничев</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Senichev</surname><given-names>Yu. 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;
Институт теоретической физики им. Л.Д. Ландау</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute for Nuclear Research, Russian Academy of Sciences;&#13;
Landau Institute for Theoretical Physics</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт теоретической физики им. Л.Д. Ландау;&#13;
Московский физико-технический институт (национальный исследовательский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Landau Institute for Theoretical Physics;&#13;
Moscow Institute of Physics and Technology (National Research University)</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>18</day><month>01</month><year>2025</year></pub-date><volume>16</volume><issue>2</issue><fpage>187</fpage><lpage>192</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мельников А.А., Николаев Н.Н., Аксентьев А.Е., Сеничев Ю.В., Колокольчиков С.Д., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Мельников А.А., Николаев Н.Н., Аксентьев А.Е., Сеничев Ю.В., Колокольчиков С.Д.</copyright-holder><copyright-holder xml:lang="en">Melnikov A.A., Nikolaev N.N., Aksentyev A.E., 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/440">https://npe.elpub.ru/jour/article/view/440</self-uri><abstract><p>Исследовалась спин-орбитальная динамика в ускорителе COSY. В численном эксперименте были исследованы основные механизмы спин-декогеренции в области ВЧ спинового резонанса. Была подтверждена аналитическая модель декогеренции спинов в зависимости от номера гармоники поля ВЧ спин-ротатора и среднеквадратичного разброса частиц по импульсам. Также рассматривается вопрос влияния внутренних спиновых резонансов и отстройки от ВЧ резонанса по частоте на эффективность управления поляризацией с помощью ВЧ соленоида.</p></abstract><trans-abstract xml:lang="en"><p>Spin-orbital dynamics was investigated at COSY accelerator. The key mechanisms of spin-decoherence in the vicinity of the RF spin resonance are covered. The analytical model of spin-decoherence depending on the harmonic number of the RF spin-rotator and the RMS momentum spread was verified. Also the efficiency of spin manipulation with an RF spin-rotator depending on the influence of intrinsic spin resonances and frequency detuning is investigated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>спин-орбитальная динамика</kwd><kwd>управление поляризацией</kwd><kwd>ВЧ спиновый резонанс</kwd><kwd>спин-декогерентность</kwd><kwd>спиновые резонансы</kwd><kwd>электрический дипольный момент</kwd></kwd-group><kwd-group xml:lang="en"><kwd>spin-orbital dynamics</kwd><kwd>polarization manipulation</kwd><kwd>RF spin resonance</kwd><kwd>spin-decoherence</kwd><kwd>spin resonances</kwd><kwd>electric dipole moment</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке гранта РНФ 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">Guidoboni G et al. // Phys. Rev. Lett. 2016. V. 117. P. 054801. https://doi.org/10.1103/PhysRevLett.117.054801</mixed-citation><mixed-citation xml:lang="en">Guidoboni G et al. // Phys. Rev. Lett. 2016. V. 117. P. 054801. https://doi.org/10.1103/PhysRevLett.117.054801</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Lehrach A., Lorentz B., Morse W., Nikolaev N., Rathmann F. “ // arXiv:1201.5773. 2012. https://doi.org/10.48500/arXiv:1201.5773</mixed-citation><mixed-citation xml:lang="en">Lehrach A., Lorentz B., Morse W., Nikolaev N., Rathmann F. “ // arXiv:1201.5773. 2012. https://doi.org/10.48500/arXiv:1201.5773</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">COSY Infinity. http://cosyinfinity.org</mixed-citation><mixed-citation xml:lang="en">COSY Infinity. http://cosyinfinity.org</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Melnikov A., Aksentyev A., Senichev Y., Syresin E. Proc. IPAC'22. June 2022. Bangkok, Thailand. 2022. P. 1832–1834. https://doi.org/10.18429/JACoW-IPAC2022-WEPOPT005</mixed-citation><mixed-citation xml:lang="en">Melnikov A., Aksentyev A., Senichev Y., Syresin E. Proc. IPAC'22. June 2022. Bangkok, Thailand. 2022. P. 1832–1834. https://doi.org/10.18429/JACoW-IPAC2022-WEPOPT005</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
