TY - THES T1 - Measurement of the positron polarization at an helical undulator based positron source for the International Linear Collider ILC AU - Laihem, Karim PY - 2009 LA - eng PB - Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I DO - http://dx.doi.org/10.18452/15990 ER -