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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/S2079562924050269</article-id><article-id custom-type="edn" pub-id-type="custom">SLIQMK</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-498</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>СПИНОВАЯ КОГЕРЕНТНОСТЬ И БЕТАТРОННАЯ ХРОМАТИЧНОСТЬ ДЕЙТРОННОГО ПУЧКА В РЕЖИМЕ “КВАЗИ-ЗАМОРОЖЕННОГО” СПИНА</article-title><trans-title-group xml:lang="en"><trans-title>SPIN COHERENCE AND BETATRON CHROMATICITY OF DEUTERON BEAM IN “QUASI-FROZEN” SPIN REGIME</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>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><email xlink:type="simple">sergey.bell13@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>Аксентьев</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Aksentiev</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>Yu. 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;&#13;
Московский физико-технический институт</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</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;&#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;
Moscow Institute of Physics and Technology;&#13;
Landau Institute for Theoretical Physics</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>13</day><month>12</month><year>2025</year></pub-date><volume>16</volume><issue>3</issue><fpage>310</fpage><lpage>315</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колокольчиков С.Д., Аксентьев А.Е., Мельников А.А., Сеничев Ю.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Колокольчиков С.Д., Аксентьев А.Е., Мельников А.А., Сеничев Ю.В.</copyright-holder><copyright-holder xml:lang="en">Kolokolchikov S.D., Aksentiev A.E., Melnikov A.A., Senichev Y.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/498">https://npe.elpub.ru/jour/article/view/498</self-uri><abstract><p>Отличительной особенностью режима “квази-замороженного” спина в синхротроне является установка специальных элементов со скрещенными магнитным и электрическим полями на прямых участках, которые компенсируют поворот спина от МДМ-компоненты на поворотных арках. Более того, из-за наличия продольного размера и разброса по импульсу внутри пучка, вращение спина может происходить некогерентно. С целью подавления этого эффекта устанавливаются секступоли, которые также влияют и на подавление хроматичности.</p></abstract><trans-abstract xml:lang="en"><p>A distinctive feature of the “quasi-frozen” spin mode in the synchrotron is the installation of special elements with crossed magnetic and electric fields in straight sections that compensate the spin rotation from the MDM components on the arcs. Moreover, because of the presence of the longitudinal length and the momentum spread inside the beam, spin rotation may occur incoherently. In order to suppress this effect, sextupoles are installed, which also affect suppression of chromaticity.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>спиновая когерентность</kwd><kwd>бетатронная хроматичность</kwd><kwd>квази-замороженный спин</kwd><kwd>электрический дипольный момент</kwd></kwd-group><kwd-group xml:lang="en"><kwd>spin coherence</kwd><kwd>betatron chromaticity</kwd><kwd>quasi-frozen spin</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">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. Lett. 2004. V. 93 (5). P. 052001. https://doi.org/10.1103/physrevlett.93.052001</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Senichev Y. et al. // Proc. IPAC'22. June 2022. Bangkok, Thailand. 2022. P. 492–495. https://doi.org/10.18429/JACoW-IPAC2022-MO-POTK024.</mixed-citation><mixed-citation xml:lang="en">Senichev Y. et al. // Proc. IPAC'22. June 2022. Bangkok, Thailand. 2022. P. 492–495. https://doi.org/10.18429/JACoW-IPAC2022-MO-POTK024.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Kolokolchikov S., Melnikov A., Aksentyev A., Syresin E., Ladygin V., Senichev Y. // Proc. IPAC'23. May 2023. Venice, Italy. 2023. P. MOPA072. https://doi.org/10.18429/JACoW-IPAC-23-MOPA072</mixed-citation><mixed-citation xml:lang="en">Kolokolchikov S., Melnikov A., Aksentyev A., Syresin E., Ladygin V., Senichev Y. // Proc. IPAC'23. May 2023. Venice, Italy. 2023. P. MOPA072. https://doi.org/10.18429/JACoW-IPAC-23-MOPA072</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Senichev Y., Maier R., Zyuzin D., Kulabukhova N.V. // Proc. IPAC'13. May 2013. Shanghai, China. 2013. WEPEA036. P. 2579–2581.</mixed-citation><mixed-citation xml:lang="en">Senichev Y., Maier R., Zyuzin D., Kulabukhova N.V. // Proc. IPAC'13. May 2013. Shanghai, China. 2013. WEPEA036. P. 2579–2581.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Сеничев Ю.В., Аксентьев А.Е., Мельников А.А. // Ядерн. физ. инжинир. 2022. Т. 13 (3). С. 309–312. https://doi.org/10.56304/S2079562922010389 [Senichev Y., Aksentyev A., Melnikov A. // Phys. At. Nucl. 2021. V. 84 (12). P. 2014–2017. https://doi.org/10.1134/S1063778821100367].</mixed-citation><mixed-citation xml:lang="en">Сеничев Ю.В., Аксентьев А.Е., Мельников А.А. // Ядерн. физ. инжинир. 2022. Т. 13 (3). С. 309–312. https://doi.org/10.56304/S2079562922010389 [Senichev Y., Aksentyev A., Melnikov A. // Phys. At. Nucl. 2021. V. 84 (12). P. 2014–2017. https://doi.org/10.1134/S1063778821100367].</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Guidoboni G. et al. // Phys. Rev. Lett. 2016. V. 117 (5). 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 (5). 054801. https://doi.org/10.1103/PhysRevLett.117.054801</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Lebedev V. OptiM Code (private commun.) www-bdnew.fnal.gov/pbar/organizationalchart/lebedev/OptiM/optim.htm.</mixed-citation><mixed-citation xml:lang="en">Lebedev V. OptiM Code (private commun.) www-bdnew.fnal.gov/pbar/organizationalchart/lebedev/OptiM/optim.htm.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">COSY INFINITY. www.bmtdynamics.org.</mixed-citation><mixed-citation xml:lang="en">COSY INFINITY. www.bmtdynamics.org.</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>
