Permanent magnet multipoles for hadron beam transportation

Fuwa, Yasuhiro   ; Iwashita, Yoshihisa*

In the development of quantum beam applications, increasing the beam intensity is an important issue to achieve efficient beam utilization. One of the most important problem to be solved in realizing intense beam is the suppression of the emittance growth of the beam caused by the space charge effect. In this study, we report the basic design of a magnet that realizes the application of a multipole magnet component to a beam transport line, which was proposed as a means to suppress the new space charge effect. In this magnet, a permanent magnet is used to efficiently generate the multipole component, and by giving the permanent magnet a movable mechanism, the strength of the multipole component can be adjusted and utilized for transporting various beams.