Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 117: Beschleunigerphysik IV (Polarisation)

T 117.2: Vortrag

Montag, 4. März 2013, 17:00–17:15, WIL-C203

Spin tracking at the International Linear Collider — •Valentyn Kovalenko¹, Gudrid Moortgat-Pick^1,2, Sabine Riemann³, Andriy Ushakov¹, Mathias Vogt², and Andrzej Wolski⁴ — ¹University of Hamburg, Hamburg, Germany — ²DESY, Hamburg, Germany — ³DESY, Zeuthen, Germany — ⁴Cockcroft Institute, Warrington, Cheshire, UK

In the baseline design for the International Linear Collider an helical undulator-based positron source has been chosen that can provide positrons with a polarization of 60% as an upgrade option motivated by physics reasons. But even the baseline configuration would already provide about 30%. In order to match the high precision requirements from physics and to optimize the physics outcome one has to control systematic uncertainties to a very high level and a precise spin tracking in the whole beamline is required as well as the option to run in an unpolarized mode for crosschecking. In our study we present our recent results on resonant depolarization technique at the damping ring.