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| TUA01 |
VEPP-4M Electron Positron Collider Operation at High Energy |
experiment, electron, luminosity, laser |
34 |
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- P.A. Piminov, G.N. Baranov, A.V. Bogomyagkov, V.M. Borin, V.L. Dorokhov, S.E. Karnaev, K.Yu. Karyukina, V.A. Kiselev, E.B. Levichev, O.I. Meshkov, S.I. Mishnev, I.A. Morozov, I.B. Nikolaev, I.N. Okunev, A.G. Shamov, E.A. Simonov, S.V. Sinyatkin, E.V. Starostina, V.N. Zhilich, A.A. Zhukov, A.N. Zhuravlev
BINP SB RAS, Novosibirsk, Russia
- C. Todyshev
Budker Institute of Nuclear Physics, Novosibirsk, Russia
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VEPP-4M is an electron positron collider equipped with the universal KEDR detector for HEP experiments in the beam energy range from 1 GeV to 6 GeV. A unique feature of VEPP 4M is the high precision beam energy calibration by resonant polarization technique which allows conducting of interesting experiments despite the low luminosity of the collider. Recently we have started new luminosity acquisition run above 2 GeV. The hadron cross section was measured from 2.3 GeV to 3.5 GeV has been done. The luminosity run for gamma-gamma physics has been started. The luminosity at Y(1S) meson has been obtained. For the beam energy calibration the laser polarimeter is used. The paper discusses recent results from VEPP 4M collider.
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Slides TUA01 [4.705 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUA01
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| About • |
Received ※ 25 September 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 22 October 2021 |
| Cite • |
reference for this paper using
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| TUPSB10 |
Modeling of the Spin-Navigator Method for Manipulating the Beam Polarization in a Spin-Transparent Storage Ring |
lattice, storage-ring, closed-orbit, injection |
251 |
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- A.E. Aksentyev, A.A. Melnikov, V. Senichev
RAS/INR, Moscow, Russia
- A.E. Aksentyev
MEPhI, Moscow, Russia
- V. Ladygin
JINR, Dubna, Moscow Region, Russia
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A method for manipulating the orientation of the beam polarization axis based on using the so-called "spin-navigator" technique in a storage ring operating in the spin-transparent regime has been modelled. The beam particles’ spin- and orbital dynamics have been numerically investigated with the purpose of determining the method’s feasibility; the latter’s effect on spin-decoherence has been studied also.
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Poster TUPSB10 [1.848 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUPSB10
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| About • |
Received ※ 24 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 06 October 2021 |
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| TUPSB11 |
Numerical Investigation of the Robustness of Spin-Navigator Polarization Control Method in a Spin-Transparent Storage Ring |
detector, solenoid, lattice, controls |
254 |
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- A.A. Melnikov, A.E. Aksentyev, V. Senichev
RAS/INR, Moscow, Russia
- A.E. Aksentyev
MEPhI, Moscow, Russia
- V. Ladygin
JINR, Dubna, Moscow Region, Russia
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The robustness of spin-navigator based method for manipulating the beam polarization axis has been investigated with respect to bend magnet installation errors. Toward that end, variation of the invariant spin axis components along the beamline of an imperfect storage ring operating in the spin-transparent mode has been estimated. The beam polarization vector behavior in the given lattice has been investigated. Conclusions are made regarding the feasibility of using spin navigator solenoids for defining the beam polarization axis in the detector region.
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Poster TUPSB11 [0.536 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUPSB11
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| About • |
Received ※ 12 September 2021 — Revised ※ 13 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 11 October 2021 |
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reference for this paper using
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