The north arc of the SLC as a spin rotator

Author

Limberg, T. ; Emma, P. ; Rossmanith, R.

Author_Institution

Linear Accel. Center, Stanford Univ., CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

429

Abstract

The 1992 running cycle of the Stanford Linear Collider (SLC) showed that the orientation of the electron polarization vector at the interaction point was very sensitive to the vertical orbit in the north collider arc. We point out the reason for this sensitivity-the spin tune is equal to the vertical betatron tune. We devise a scheme of closed vertical orbit bumps which provide arbitrary manipulations of the polarization vector at the IP. We have developed an analytical model for the tuning of this `arc spin rotator´ and have performed a detailed numerical analysis to show its effectiveness. We present experimental results

Keywords

beam handling techniques; electron accelerators; linear accelerators; numerical analysis; tuning; 1992 running cycle; SLC; Stanford Linear Collider; analytical model; arc spin rotator; closed vertical orbit bumps; electron polarization vector; interaction point; north arc; numerical analysis; spin tune; vertical betatron tune; Analytical models; Electrons; Linear accelerators; Magnetic fields; Magnets; Polarization; Resonance; Solenoids; Tuning; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.308891

Filename

308891