22-29 July 2015
Europe/Vienna timezone

The ILC Positron Source

Jul 25, 2015, 12:10 PM


talk Accelerators Accelerators


Prof. Gudrid Moortgat-Pick (University of Hamburg / DESY)


High luminosity is required at future Linear Colliders which is particularly challenging for all corresponding positron sources. At the ILC, polarized positrons are obtained from electron-positron pairs by converting high-energy photons produced by passing the high-energy main electron beam through a helical undulator. The conversion target undergoes cyclic stress with high peak values. To distribute the high thermal load, the target is rotated with 100 m/s. However, the cyclic stress over long time as well as the temperature dependent material parameters yield thermo- mechanical load which could exceed the recommended fatigue limit. In the talk, a general overview about the ILC positron source components is given as well as new results on the target stress evolution. The target design parameters are reviewed as well.

Primary author

Prof. Gudrid Moortgat-Pick (University of Hamburg / DESY)


Dr Andriy Ushakov (University of hamburg) Dr Klaus Floettmann (DESY) Dr Olufemi Segun Adeyemi (University of Hamburg) Dr Sabine Riemann (Deutsches Elektronen-Synchrotron (DE))

Presentation materials