Hamburg 2016 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 98: Experimentelle Methoden III
T 98.8: Vortrag
Donnerstag, 3. März 2016, 18:40–18:55, VMP8 SR 105
Stress evaluation at the ILC positron source — •Andriy Ushakov1, Gudrid Moortgat-Pick1, Sabine Riemann2, Felix Dietrich2, Kurt Aulenbacher3, Valery Tyukin3, and Philipp Heil3 — 1Universität Hamburg, II. Institut für Theoretische Physik, Luruper Chaussee 149, 22761 Hamburg — 2Deutsches Elektronen-Synchrotron DESY, Standort Zeuthen, Platanenallee 6, 15738 Zeuthen — 3Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, Johann-Joachim-Becher-Weg 45, 55128 Mainz
High luminosity is required at future Linear Colliders which is particularly challenging for all corresponding positron sources. At the International Linear Collider (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 thermal load, the target is designed as wheel spinning in vacuum with 100 m/s. However, the cyclic stress over long time at high target temperatures could exceed the fatigue stress limit. In the talk, an overview of the ILC positron source is given. The prospects to study material parameters under conditions as expected at the ILC are discussed.