Investigation of high duty factor ISR RFQ-1000

✍ Scribed by Y.R. Lu; C.E. Chen; J.X. Fang; S.L. Gao; J.F. Guo; Z.Y. Guo; D.S. Li; W.G. Li; O.J. Pan; X.T. Ren; Y. Wu; X.Q. Yan; J.X. Yu; M.L. Yu; U. Ratzinger; H. Deitinghoff; H. Klein; A. Schempp

• Book ID: 103852369
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 463 KB
• Volume: 515
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2003.07.025

✦ Synopsis

Two Integral Split Ring (ISR) RFQs with high duty factor of 16.7% have been designed for the application of heavy ion implantation and built in the past several years at Institute of Heavy Ion Physics (IHIP) in Peking University. Two kinds of PIG ion sources with permanent magnets and LEBT were installed and optimized for the injection into these two RFQs. The positive O + and negative O À ions were extracted and accelerated separately as well as simultaneously. The output macro pulse O À beam current reached 660 mA at a transmission efficiency of more than 82%. The N + beam was also accelerated with similar transmission efficiency, but the output current intensity for positive ions were lower than the negative ions because of the extracted current limitation of ion sources. The improvements, especially for high duty factor and experimental results with the 1 MeV ISR RFQ will be presented in this paper.