Design and Initial Performance of a Large Cross-Section Multi-Element Ionization Chamber System for Water Equivalent Range Measurements of Pristine Proton Fields
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J Farr1,2 *, T Mertens3 ,C Bäumer1,2 , B Mukherjee1,2 , B Marchand3 ,M Stuschke1,2 , (1) Westdeutsches Protonentherapiezentrum, Essen, Germany, (2) Universitätsklinikum, Essen, Germany, (3) IBA Dosimetry, Schwarzenbruck, Germany