Speaker
Dr
Friedrich Staufenbiel
(DESY Zeuthen)
Description
An intense polarized positron beam for future linear colliders can be produced using a high power beam of circularly polarized photons which penetrates a thin titanium-alloy target. The degree of polarization can be increased by cutting the outer part of the photon beam generated in a helical undulator using a collimator in front of the target. However, the photon beam induces substantial heat load and stress inside the collimator materials. In order to avoid failure of the collimator components the heat and stress evolution has been simulated. The results as well as the corresponding material arrangements for the photon collimator design are presented.
Primary author
Dr
Friedrich Staufenbiel
(DESY Zeuthen)
Co-authors
Andriy Ushakov
(University of Hamburg)
Sabine Riemann
(DESY)
