Septum electromagnet for deflecting and splitting a beam, electromagnet for deflecting and splitting a beam, and method for deflecting a beam

摘要

A septum electromagnet to be divided into a first beam deflecting magnetic pole space and a second deflecting magnetic pole space by a septum electromagnet thereof is prepared. Then, electric currents are flown in coils including the septum electromagnet, and thus, a first magnetic field and a second magnetic field are generated in the first beam deflecting magnetic pole space and the second beam deflecting magnetic pole space, respectively. The direction of the first magnetic field is opposite to that of the second magnetic field, and a beam passing through the first beam deflecting magnetic pole space is deflected by a given angle in a reverse direction to a beam passing through the second beam deflecting magnetic pole space.