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Polarized beams in high energy storage rings

Journal Article:

Abstract

In recent years there has been a considerable advance in understanding the spin motion of particles in storage rings and accelerators. The survey presented here outlines the early historical development in this field, describes the basic ideas governing the kinetics of polarized particles in electromagnetic fields and shows how these have evolved into the current description of polarized beam behaviour. Orbital motion of particles influences their spin precession, and depolarization of a beam can result from excitation of spin resonances by orbit errors and oscillations. Electrons and positrons are additionally influenced by the quantized character of synchrotron radiation, which not only provides a polarizing mechanism but also enhances depolarizing effects. Progress in the theoretical formulation of these phenomena has clarified the details of the physical processes and suggested improved methods of compensating spin resonances. Full use of polarized beams for high-energy physics with storage rings requires spin rotators to produce longitudinal polarization in the interaction regions. Variants of these schemes, dubbed Siberian snakes, provide a curious precession topology which can substantially reduce depolarization in the high-energy range. Efficient polarimetry is an essential requirement for implementing polarized beams, whose utility for physics can be enhanced by various methods of spin manipulation.
Authors:
Montague, B W [1] 
  1. European Organization for Nuclear Research, Geneva (Switzerland)
Publication Date:
Nov 01, 1984
Product Type:
Journal Article
Reference Number:
AIX-16-024612; EDB-85-061770
Resource Relation:
Journal Name: Phys. Rep.; (Netherlands); Journal Volume: 113:1
Subject:
43 PARTICLE ACCELERATORS; STORAGE RINGS; POLARIZED BEAMS; REVIEWS; ALGEBRA; CHARGED PARTICLES; DEPOLARIZATION; DISTURBANCES; ELECTROMAGNETIC FIELDS; ELECTRON BEAMS; ELECTRONS; ORBITS; PAULI SPIN OPERATORS; POLARIMETERS; POSITRON BEAMS; POSITRONS; PRECESSION; PROTON BEAMS; QUANTUM ELECTRODYNAMICS; RESONANCE; SPIN FLIP; SPIN ORIENTATION; SPINORS; SYNCHROTRON OSCILLATIONS; SYNCHROTRON RADIATION; ANGULAR MOMENTUM OPERATORS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BEAM DYNAMICS; BEAMS; BREMSSTRAHLUNG; DOCUMENT TYPES; ELECTRODYNAMICS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; LEPTON BEAMS; LEPTONS; MATHEMATICAL OPERATORS; MATHEMATICS; NUCLEON BEAMS; ORIENTATION; OSCILLATIONS; PARTICLE BEAMS; QUANTUM FIELD THEORY; QUANTUM OPERATORS; RADIATIONS; 430400* - Particle Accelerators- Storage Rings
OSTI ID:
5975065
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: PRPLC
Submitting Site:
HEDB
Size:
Pages: 1-96
Announcement Date:

Journal Article:

Citation Formats

Montague, B W. Polarized beams in high energy storage rings. Netherlands: N. p., 1984. Web.
Montague, B W. Polarized beams in high energy storage rings. Netherlands.
Montague, B W. 1984. "Polarized beams in high energy storage rings." Netherlands.
@misc{etde_5975065,
title = {Polarized beams in high energy storage rings}
author = {Montague, B W}
abstractNote = {In recent years there has been a considerable advance in understanding the spin motion of particles in storage rings and accelerators. The survey presented here outlines the early historical development in this field, describes the basic ideas governing the kinetics of polarized particles in electromagnetic fields and shows how these have evolved into the current description of polarized beam behaviour. Orbital motion of particles influences their spin precession, and depolarization of a beam can result from excitation of spin resonances by orbit errors and oscillations. Electrons and positrons are additionally influenced by the quantized character of synchrotron radiation, which not only provides a polarizing mechanism but also enhances depolarizing effects. Progress in the theoretical formulation of these phenomena has clarified the details of the physical processes and suggested improved methods of compensating spin resonances. Full use of polarized beams for high-energy physics with storage rings requires spin rotators to produce longitudinal polarization in the interaction regions. Variants of these schemes, dubbed Siberian snakes, provide a curious precession topology which can substantially reduce depolarization in the high-energy range. Efficient polarimetry is an essential requirement for implementing polarized beams, whose utility for physics can be enhanced by various methods of spin manipulation.}
journal = {Phys. Rep.; (Netherlands)}
volume = {113:1}
journal type = {AC}
place = {Netherlands}
year = {1984}
month = {Nov}
}