Recent developments in stored polarized electron positron beams
In nearly all electron or positron storage rings the beams are polarized vertically by the Sokolov-Ternov effect. The existence of polarized beams was established both in low energy rings such as ACO (the first storage ring in which the Sokolov-Ternov polarization effect was measured), BESSY or VEPP2 and in high energy rings such as TRISTAN, HERA and LEP. As a result beam polarization seems to be an inherent property of electron positron rings. It should be noted that this free polarization was never used for high energy experiments except in those instances in which exact energy calibration measurements were performed. Proposals for using stored polarized beams for internal target experiments are fairly new. Experiments with polarized longitudinal beams in LEP are also still in the stage of planning. The aim of this paper is to summarize the efforts of the last years in order to arrive at a better understanding of the spin dynamics in electron positron storage rings and to compare the experimental results with the theory. In the following polarimeters are not discussed.
- Research Organization:
- Southeastern Universities Research Association, Inc., Newport News, VA (United States). Continuous Electron Beam Accelerator Facility
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 7068403
- Report Number(s):
- DOE/ER/40150-192; CEBAF-PR-92-007; CONF-9201107-2; ON: DE92016965
- Resource Relation:
- Conference: Adriatico research conference on polarization dynamics in nuclear and particle physics, Trieste (Italy), 7-10 Jan 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STORAGE RINGS
POLARIZED BEAMS
BETATRON OSCILLATIONS
CEBAF ACCELERATOR
DESIGN
ELECTRON-POSITRON INTERACTIONS
POLARIMETERS
SPIN ORIENTATION
SYNCHROTRON OSCILLATIONS
ACCELERATORS
BEAM DYNAMICS
BEAMS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LINEAR ACCELERATORS
ORIENTATION
OSCILLATIONS
PARTICLE INTERACTIONS
430400* - Particle Accelerators- Storage Rings
430200 - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics