Title :
Acceleration test of the folded-coaxial RFQ linac for the RILAC
Author :
Kamigaito, O. ; Goto, A. ; Miyazawa, Y. ; Chiba, T. ; Hemmi, M. ; Kase, M. ; Kohara, S. ; Nakagawa, T. ; Batygin, Y. ; Yano, Y.
Author_Institution :
RIKEN, Inst. of Phys. & Chem. Res., Saitama, Japan
Abstract :
A new injector system for the RIKEN heavy-ion linac (RILAC) has been constructed, which consists of a variable-frequency RFQ and an 18-GHz ECR ion source. The RFQ, based on a folded-coaxial resonator with a movable shorting plate, accelerates ions with mass-to-charge ratios of 6 to 26 at up to 450 keV per charge in the cw mode by varying the resonant frequency from 17.7 to 39.2 MHz. Beam tests of the RILAC and the ring cyclotron (RRC) were successfully performed with the new injector system. The beam intensity from the RRC as well as the transmission efficiency through the RILAC has been greatly improved. This paper describes the performance of the RFQ and the results of the acceleration tests
Keywords :
accelerator RF systems; coaxial waveguides; cyclotrons; ion accelerators; linear accelerators; particle beam injection; 17.7 to 39.2 MHz; ECR ion source; RIKEN heavy-ion linac; RILAC; acceleration tests; beam intensity; folded-coaxial RFQ linac; folded-coaxial resonator; injector; resonant frequency; ring cyclotron; transmission efficiency; variable-frequency RFQ; Acceleration; Apertures; Blades; Chemicals; Copper; Frequency; Ion sources; Life estimation; Linear particle accelerator; Testing;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749888
