A design study on the CSNS LEBT pre-chopper Liu, HuaChang ; Ouyang, HuaFu ; Peng, Jun ; Huang, Tao ; Gong, KeYun ; Xu, TaoGuang ; Fu, ShiNian Abstract Publication: Science China Physics, Mechanics, and Astronomy Pub Date: December 2011 DOI: 10.1007/s11433-011-4565-9 Bibcode: 2011SCPMA..54S.231L