CAD-Based Shielding Analysis for ITER Port Diagnostics Arkady Serikov, Ulrich Fischer, David Anthoine, Luciano Bertalot, Maartin De Bock, Richard O’Connor, Rafael Juarez and Vitaly Krasilnikov EPJ Web Conf., 153 (2017) 03010 Published online: 25 September 2017 DOI: 10.1051/epjconf/201715303010