• G. Gulbekyan, O.N. Borisov, V.I. Kazacha
  JINR, Dubna

Ac­cel­er­at­ed heavy ions get a charge spec­trum on pass­ing a thing tar­get. The charge dis­per­sion and its max­i­mum de­pend on the ion type, its en­er­gy, ma­te­ri­al, and the foil thick­ness. Change of the ion charge leads to change of the ion mag­net­ic rigid­i­ty. Heavy ion beam ex­trac­tion from the AVF cy­clotrons by strip­ping in the thing tar­gets is based on loss of the ra­di­al sta­bil­i­ty of the ac­cel­er­at­ed beam after its mag­net­ic rigid­i­ty change. Prop­er­ty data of car­bon foils used for the heavy ion beam ex­trac­tion by strip­ping are given. Ex­pe­ri­ence of using heavy ion beam ex­trac­tion from the AVF cy­clotrons of FLNR (Dubna) by strip­ping is con­sid­ered.

• G. Gulbekyan, B. Gikal, I. Kalagin, N. Kazarinov
  JINR/FLNR, Dubna

Four heavy ions cy­clotrons are in op­er­a­tion at FLNR now. Heavy ion beams used for super heavy el­e­ments syn­the­sis, RIB pro­duc­tion and ap­pli­ca­tion. Plan for seven years ac­cel­er­a­tor de­vel­op­ment and op­er­a­tion are pre­sent­ed.

Slides

• G. Gulbekyan, I. Ivanenko
  JINR/FLNR, Dubna

At the pre­sent time, the ac­tiv­i­ties on cre­ation of the new mul­ti-pur­pose isochronous cy­clotron U400R are car­ried out at the FLNR, JINR. The isochronous cy­clotron U400R is in­tend­ed for ob­tain­ing the beams of the ac­cel­er­at­ed ions from ⁴He¹⁺ (A/Z=4, W=27MeV/u) up to ¹³²Xe¹¹⁺ (A/Z=12, W=3.5MeV/u). The cy­clotron mag­net­ic field can be changed from 0.8T to 1.8T and allow the smooth­ly vari­a­tion of the ion beam en­er­gy at the range ±35% from nom­i­nal. The cy­clotron RF sys­tem keeps up 2 - 6 har­mon­ic modes. The aim of the pre­sent work is to in­ves­ti­gate the op­ti­mal ge­om­e­try of U400R cy­clotron cen­ter for the wide range of ac­cel­er­a­tion regimes. The com­pu­ta­tion of the beams ac­cel­er­a­tion is car­ried out by means of the com­put­er code CENTR.