• H. Yim, D. H. An, G. Hahn, Y.-S. Kim
  KIRAMS, Seoul

A mag­net lat­tice of the car­bon-ion syn­chrotron was stud­ied for can­cer ther­a­py, which re­quires max­i­mum 400 MeV/u car­bon beam, at KI­RAMS. In the study, we op­ti­mized the mag­net lat­tice con­fig­u­ra­tion to fit into the ther­a­py pur­pose. Major re­quire­ments for the pur­pose are (1) long ex­trac­tion time (about 1 sec­ond), (2) com­pact size, and (3) low cost. For the re­quire­ment (1), a slow ex­trac­tion scheme was adopt­ed by the use of third in­te­ger res­o­nance. For (2) and (3), we min­i­mized the cir­cum­fer­ence as 69.6m and a num­ber of the mag­net el­e­ments as 16 and 20 for bend­ing mag­net and quadrupole mag­net, re­spec­tive­ly. The study was car­ried out by the use of a sim­u­la­tion codes for beam par­ti­cle dy­nam­ics and op­tics. A de­tail of the con­cep­tu­al lat­tice de­sign of the car­bon-ion syn­chrotron is de­scribed in the paper.