Accelerator R&D Team
Laboratory Head
Hiroki OKUNO (D.Sci.)
We are developing the key hardware in upgrading the RIBF accelerator complex. Firstly we are developing the challenging superconducting coils for the new 28 GHz ECR ion source which is being developed in order to increase the intensity of uranium beam. We are designing LEBT (Low Energy Beam Transport) which transport the high power beam from the ion source to the next injector linac. Correct estimations of neutralization of space charge forces are hard task. Finally we are developling long-lived charge stripper foils which are installed to breed the ion charges for reduction of their magnetic rigidities. We are also developing gas strippers.
- Development of superconducting technology in acceleration system.
- Development of the LEBT(Low Energy Beam Transport) and the new injector for the high power beams.
- Development of charge strippers for high power beams (foil, gas)
- Ohnishi, J., Nakagawa, T., Higurashi, Y., Okuno, H., Kusaka, K., Goto, A.,:
"Construction and test of the superconducting coils for RIKEN SC-ECR ion source"
Proc. of the 11th European Particle Accelerator Conference (EPAC 2008), Genoa, Italy, 2008, p433-435 - Ohnishi, J., Okuno, H., Fukunishi, Yamada, K., Goto, A., Yano, Y.:
"The magnetic field of the superconducting ring cyclotron"
Proc. the 18th International Conference on Cyclotrons and Their Applications, Giardini Naxos, Italy, 2007, p429-431 - Kuboki, H, Okuno, S. Yokouchi, H., Hasebe, Kishida, T., Fukunishi, N., Kamigaito, O., Goto, A., Kase, M., Yano, Y.:
"Charge-state distribution measurements of 238U and 136Xe at 11 MeV/nucleon using gas charge stripper"
Physical Review Special Topics - Accelerators and Beams 13, 093501 (2010) - Hasebe, H., Okuno, H., Kuboki, H., Ryuto, H., Fukunishi, N., Kamigaito, O., Goto, A., Kase, M., Yano, Y.:
"Development of long-life carbon stripper foils for uranium ion beams"
Proc. of the 24th world conference of the INTDS, Caen, France, 2008, in print. - Hasebe, H., Ryuto, H., Fukunishi, N., Goto, A., Kase, M., Yano, Y.:
"Polymer coating method developed for carbon stripper foils"
Nuclear Instruments and Methods in Physics Research A590 (2008) p13-17 - Okuno, H., Fkunishi, N., Goto, A., Hasebe, H., Imao, H., Kamigaito, O., Kase, M., Kuboki, H., Yano, Y.:
"A New Possibility of Low-Z Gas stripper for High-Power Uranium Beam Acceleration as Alternative to C Foil"
Proc. of the 43nd ICFA Advanced Beam Dynamics Workshop on High-Intensity, High-Brightness Hadron Beams, Morschach, Switzerland, (2010) 600 - Okuno, H., Fukunishi, N., Fujinawa, T., Higurashi, Y., Ikezawa, E., Kamigaito, O., Kase, M., Nakagawa, T., Ohnhishi, J., Sato, Y., Yano, Y., Ostroumov, P.,:
"Heavy Ion Accelerators for RIKEN RI Beam Factory and Upgrade Plans"
Proc. of the 42nd ICFA Advanced Beam Dynamics Workshop on High-Intensity, High-Brightness Hadron Beams, Nashville USA, (2008) 416 - Okuno, H., Adelmann, A., Yang, J.,:
"Possibility of Roud Beam Formation in RIBF Cyclotrons"
Proc. of ICAP'09 San Francisco, Sept., 2009 - Okuno, H., Yamada, K., Ohnishi, J., Fukunishi, N., Ikegami, K., Maie, T., Hasebe, H., Kamigaito, O., Sakamoto, N., Kumagai, K., Yokouchi, S., Kase, M., Goto, A., Yano, Y.,:
"Commissioning of the Superconducting Ring Cyclotron for the RIKEN RI Beam Factory"
IEEE Trans. Appl. Supercond., 18 (2008) 226 - Okuno, H., Yamada, K., Ohnishi, J., Fukunishi, N., Ikegami, K., Maie, T., Hasebe, H., Kamigaito, O., Sakamoto, N., Kumagai, K., Yokouchi, S., Kase, M., Goto, A., Yano, Y.,:
"The Superconducting Ring Cyclotron in RIKEN"
IEEE Trans. Appl. Supercond., 17 (2007) 1063.
Principal Investigator
- Hiroki OKUNO
- Laboratory Head
Staff Scientist
- Jun-ichi OHNISHI
- Senior Technical Scientist
- Hiroshi IMAO
- Research Scientist
- Hiroo HASEBE
- Nishina Center Technical Scientist
Postdoctoral Fellow
- Hironori KUBOKI
- Special Postdoctoral Researcher