Transparent Spin Method for Spin Control of Hadron Beams in Colliders

We present a concept for control of the ion polarization, called a transparent spin method. The spin transparency is achieved by designing such a synchrotron structure that the net spin rotation angle in one particle turn is zero. The polarization direction of any ions including deuterons can be eff...

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Bibliographic Details
Published in:Physical review letters 2020-05, Vol.124 (19), p.194801-194801, Article 194801
Main Authors: Filatov, Yu N, Kondratenko, A M, Kondratenko, M A, Derbenev, Ya S, Morozov, V S
Format: Article
Language:English
Subjects:
Deuterons
Hadrons
Ion beams
PARTICLE ACCELERATORS
Particle beams
Particle spin
Polarization (spin alignment)
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Summary:We present a concept for control of the ion polarization, called a transparent spin method. The spin transparency is achieved by designing such a synchrotron structure that the net spin rotation angle in one particle turn is zero. The polarization direction of any ions including deuterons can be efficiently controlled using weak quasistatic fields. These fields allow for dynamic adjustment of the polarization direction during an experiment. The main features of the transparent spin method are illustrated in a figure-eight collider. The results are relevant to the electron-ion collider considered in the U.S., the nuclotron-based ion collider facility constructed in Russia, and a polarized electron-ion collider planned in China.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.124.194801