Spin Rotation Schemes at the ILC for Two Interaction Regions and Positron Polarization with both Helicities
This note describes a spin rotation scheme for the ILC that allows the polarization spin vector of the electron and positron beams to be tuned independently for two Interaction Regions (IR). The correct spin direction for a particular IR can be selected by directing the beam into one of two parallel spin rotation beam lines located between the damping ring and the linac. With suitable fast kicker magnets, it is possible to rapidly switch between these parallel beam lines, so that polarized beams can be delivered to two IRs on a pulse train by pulse train basis. A similar scheme can be employed in the insertion beam line to the positron damping ring, to allow rapid helicity switching for polarized positrons.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- DOE Contract Number:
- Resource Type:
- Technical Report
- Research Org:
- Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
- Sponsoring Org:
- Country of Publication:
- United States
- 43 PARTICLE ACCELERATORS; DAMPING; ELECTRONS; HELICITY; KICKER MAGNETS; POLARIZATION; POLARIZED BEAMS; POSITRON BEAMS; POSITRONS; ROTATION; SPIN; VECTORS
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