Heat Load and Stress Studies for an Design of the Photon Collimator for the ILC Positron Source

Details Heat Load and Stress Studies for an Design of the Photon Collimator for the ILC Positron Source Heat Load and Stress Studies for an Design of the Photon Collimator for the ILC Positron Source

2012-02-27

arxiv.org/abs/1202.5987v1

Physics

Accelerator Physics

Scientific paper

The ILC baseline design for the positron source is based on radiation from a helical undulator to produce positrons in a thin target. Since the photon beam created in the helical undulator is circularly polarized, the generated positron beam is longitudinally polarized. Using a photon collimator upstream the positron target the positron polarization can be enhanced. However, the photon beam intensity yields a huge thermal load in the collimator material. In this paper the thermal load and heat dissipation in the photon collimator is discussed and design solutions are suggested.

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