核/JINR晶格缺陷对整数自旋共振附近质子极化影响的补偿(综述)

IF 1.4 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Yu. N. Filatov, A. M. Kondratenko, N. N. Nikolaev, Yu. V. Senichev, M. A. Kondratenko, S. V. Vinogradov, E. D. Tsyplakov, A. I. Chernyshov, A. V. Butenko, S. A. Kostromin, V. P. Ladygin, E. M. Syresin, E. A. Butenko, I. L. Guryleva, A. A. Melnikov, A. E. Aksentev
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引用次数: 0

摘要

在对撞光束的自旋操纵方面仍然存在一些悬而未决的问题,这是偏振光束对撞机操作的一个关键方面,例如基于核子的离子对撞机设施(俄罗斯杜布纳JINR)和电子离子对撞机(美国BNL)。自旋透明机制是控制氘核极化的唯一可行机制,但尚未得到实验证实。利用JINR加速器综合体的现有配置,可以在核同步加速器的质子束上进行自旋透明实验。本文分析了基于规则轨道转向偶极子的自旋导航仪引导下质子束自旋共振快速穿越过程中的极化动力学。设计了一种补偿原子核晶格缺陷对自旋相干作用的方案。在该方案中,考虑同步加速器能量调制,由晶格缺陷引起的自旋场由共振区自旋的绝热偏差确定。整数共振强度可以补偿到轨道束发射所限定的极限。该自旋补偿器的数值模拟证实了具有强畸变闭合轨道的不完全原子核晶格中的自旋透明状态可以通过实验得到验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Compensation of the Effect of the Imperfection of the Nuclotron/JINR Lattice on the Proton Polarization near an Integer Spin Resonance (Brief Review)

Compensation of the Effect of the Imperfection of the Nuclotron/JINR Lattice on the Proton Polarization near an Integer Spin Resonance (Brief Review)

A number of open questions remain in the manipulation of the spins of colliding beams, which is a key aspect in the operation of polarized beam colliders such as the Nuclotron-based ion collider facility (JINR, Dubna, Russia) and the electron ion collider (BNL, United States). The spin transparency regime, which is the only realistic regime to control the deuteron polarization, has not yet been approved experimentally. With the existing configuration of the JINR accelerator complex, a pilot spin transparency experiment could be performed on a proton beam in the Nuclotron synchrotron. The dynamics of the proton beam polarization during the fast crossing of spin resonance guided by spin navigators based on regular orbit-steerer dipoles has been analyzed in this work. A scheme has been designed to compensate the coherent action of Nuclotron lattice imperfections on spin. In this scheme, the spin field induced by lattice imperfections is determined from the adiabatic deviation of spins in the resonance region, taking into account the synchrotron energy modulation. Integer-resonance strengths can be compensated down to the limits conditioned by orbital beam emittances. The numerical simulation of the proposed spin compensator has confirmed that the spin transparency regime in an imperfect Nuclotron lattice with a strongly distorted closed orbit can be experimentally verified.

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来源期刊
JETP Letters
JETP Letters 物理-物理:综合
CiteScore
2.40
自引率
30.80%
发文量
164
审稿时长
3-6 weeks
期刊介绍: All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.
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