Radiation damage of the ILC positron source target

Details Radiation damage of the ILC positron source target Radiation damage of the ILC positron source target

2007-12-14

arxiv.org/abs/0712.2343v1

ECONF C0705302:SRC10,2007

Physics

Accelerator Physics

to appear in the proceedings of the Linear Collider Workshop 2007 and the International Linear Collider meeting 2007, DESY, Ha

Scientific paper

The radiation damage of the positron source target for the International Linear Collider (ILC) has been studied. The displacement damage in target material due to multi-MeV photons has been calculated by combining FLUKA simulations for secondary particle production, SPECTER data for neutron displacement cross-sections and the Lindhard model for estimations of displacement damage by ions. The radiation damage of a stationary Ti6Al4V target in units of displacements per atom (dpa) has been estimated for photons from an undulator with strength 0.92 and period 1.15 cm. The calculated damage is 7 dpa. Approximately 12.5% of displacement damage result from neutrons.

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