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T: Teilchenphysik

T 410: Beschleuniger III

T 410.6: Gruppenbericht

Mittwoch, 29. März 2006, 17:50–18:10, C2-03-527

Aspects of Radiation Level at the ILC Positron Source — •Andriy Ushakov and Sabine Riemann — DESY Zeuthen

For the International Linear Collider (ILC) baseline design an undulator-based positron source is recommended. Photons generated by electrons passing a 100 m long undulator hit a rotating target and create electron-positron pairs. The positrons are captured and used for acceleration. An advantage of this source is the significantly lower radiation level in comparison to a conventional positron source which uses the electron beam directly to produce electron-positron pairs. Nevertheless, the positron source has to be installed in a shielded area with remote handling capabilities. With FLUKA, a general purpose tool for calculations of particle transport and interactions with matter, the fluxes of neutrons and photons have been calculated and the activation of the positron source components has been considered depending on the parameters of the source. The results will be presented and the shielding to protect people working in the source area will be discussed.