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- E. Ikezawa, M. Fujimaki, Y. Higurashi, O. Kamigaito, M. Kase, M. Komiyama, T. Nakagawa, K. Ozeki, N. Sakamoto, K. Suda, A. Uchiyama
RIKEN Nishina Center, Wako, Japan
- K. Kaneko, T.O. Ohki, K. Oyamada, M. Tamura, H. Yamauchi, Y.A. Yusa
SHI Accelerator Service Ltd., Tokyo, Japan
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The RIKEN heavy ion linac (RILAC) is composed of a variable-frequency Wideröe linac, an 18 GHz ECR ion source, a variable-frequency folded-coaxial radio frequency quadrupole linac (FC-RFQ) as a pre-injector, and a Charge-State Multiplier system (CSM) as a booster. The operation of RILAC was started to supply heavy ion beams for experiments in 1981. The 18 GHz ECR ion source and the FC-RFQ were installed in 1996. The CSM was installed in 2000. The maximum beam energy, boosted by the CSM, is 6.0 MeV/nucleon. A GAs-filled Recoil Isotope Separator (GARIS) was moved from the E1 experiment room of the RRC to the No. 1 target room of the RILAC in 2000. In RIKEN Nishina center, the experiment on the super-heavy element (Z=113) search was carried out at RILAC from September 2003 to October 2012. As a result, three events for Z=113 have been successfully observed. The heavy-ion beam acceleration at RIKEN for the super-heavy element search will be reported.
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