Paper |
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Other Keywords |
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TUPSB08 |
Magneto-Optical Structure of the NICA Collider With High Critical Energy |
quadrupole, sextupole, focusing, collider |
245 |
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- S.D. Kolokolchikov, V. Senichev
RAS/INR, Moscow, Russia
- E. Syresin
JINR, Dubna, Moscow Region, Russia
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In the proton option of the NICA collider, there is a problem of crossing transition energy. To do this, we have investigated ways to increase the critical energy for the proton option of the NICA collider. The method of superperiodic modulation of quadrupole gradients is applied. Two variants of dispersion suppression on the arch for matching with straight sections are considered. The selection of sextupoles is carried out to suppress the natural chromaticity and compensate for the sextupole component. The Twiss parameters for the proposed structures are given, as well as the dynamic apertures and working points are investigated.
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Poster TUPSB08 [3.646 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUPSB08
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About • |
Received ※ 17 September 2021 — Revised ※ 27 September 2021 — Accepted ※ 02 October 2021 — Issued ※ 21 October 2021 |
Cite • |
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TUPSB13 |
Charged Particle Dynamics Optimization in Discrete Systems |
controls, collider, factory, simulation |
259 |
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- E.D. Kotina, D.A. Ovsyannikov
Saint Petersburg State University, Saint Petersburg, Russia
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Discrete optimization methods of dynamic systems are widely presented in the scientific literature. However, to solve various problems of beam dynamics optimization, it is necessary to create special optimization models that would take into account the specifics of the problems under study. The paper proposes a new mathematical model that includes the joint optimization of a selected (calculated) motion and an ensemble of perturbed motions. Functionals of a general form are considered, which makes it possible to estimate various characteristics of a charged particle beam and the dynamics of the calculated trajectory. The optimization of a bundle of smooth and nonsmooth functionals is investigated. These functionals estimate both the integral characteristics of the beam as a whole and various maximum deviations of the parameters of the particle beam. The variation of a bundle of functionals is given in an analytical form, which allows us to construct directed optimization methods. The selected trajectory can be taken, for example, as the trajectory of a synchronous particle or the center of gravity of a beam (closed orbit). We come to discrete models when we consider the dynamics of particles using a transfer matrices or transfer maps. Optimization problems can be of orbit correction, dynamic aperture optimization, and many other optimization problems in both cyclic and linear accelerators of charged particle beams.
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUPSB13
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About • |
Received ※ 16 September 2021 — Revised ※ 18 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 22 October 2021 |
Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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