CYCLOTRONS 2010 - List of Authors (Song, G.F.)

Paper	Title	Page
MOPCP031	Physics Design and Calculation of CYCIAE-70 Extraction System	114
	S. An, F.P. Guan, M. Li, G.F. Song, C. Wang, S.M. Wei, F. Yang, T.J. Zhang, J.Q. Zhong CIAE, Beijing, People's Republic of China
	A cyclotron functioning as a driver with beam power of 50kW (70 MeV, 0.75 mA) based on compact H⁻ cyclotron, CYCIAE-70, has been designed at CIAE in Beijing for the RIB production and application in the field of nuclear medicine recently. CYCIAE-70 is designed to be a dual particle cyclotron capable of delivering proton with energy in the range 35~70 MeV and deuteron beam with energy in a range of about 18~33 MeV. About 700 μA for H⁺ and 40 μA for D⁺ will be extracted in dual opposite directions by charge exchange stripping devices and the extraction beam energy is continuously adjustable. The physics design of CYCIAE-70 stripping system has been done and the optics calculations for the extraction proton and deuteron beam have been finished. The dispersion effects for the extracted beam are analyzed and the beam parameters after extraction are calculated with multi-particle tracking code COMA.

MOPCP064	Amplifier Test Stand for the CRM Cyclotron	177
	Z.G. Yin, K. Fei, B. Ji, P.Z. Li, G.S. Liu, G.F. Song, T.J. Zhang CIAE, Beijing, People's Republic of China C.J. Yu CASIC, Beijing, People's Republic of China
	Abstract: The final stage amplifier stability proves to be an important issue in the process of commissioning CRM cyclotron at CIAE. An air cooled 4CX15,000 tube final stage has been designed to evaluate the anode circuit and neutralization, both of which are weak points of the CRM cyclotron amplifier. Instead of strip line, the design of the new anode structure adopts coaxial form, resulting in less chance of parasitic resonance in the circuits. A tunable neutralization circuits is also included in the design, giving an opportunity to better stability in high power operations. First, the instability in CRM RF system will be analyzed in this paper followed with the new amplifier designs including the tube working line calculations, input/output circuit calculations and finite integral simulations. The mechanical design for tube socket and the anode tank have been successfully carried out using the data provided in this paper. The final stage amplifier is then fabricated, assembled and commissioned. In the power test with dummy load, more than 9.2kW RF fundamental power is provided at the frequency of 44MHz.

Paper

Title

Page

Physics Design and Calculation of CYCIAE-70 Extraction System

114

S. An, F.P. Guan, M. Li, G.F. Song, C. Wang, S.M. Wei, F. Yang, T.J. Zhang, J.Q. Zhong
CIAE, Beijing, People's Republic of China

A cyclotron functioning as a driver with beam power of 50kW (70 MeV, 0.75 mA) based on compact H⁻ cyclotron, CYCIAE-70, has been designed at CIAE in Beijing for the RIB production and application in the field of nuclear medicine recently. CYCIAE-70 is designed to be a dual particle cyclotron capable of delivering proton with energy in the range 35~70 MeV and deuteron beam with energy in a range of about 18~33 MeV. About 700 μA for H⁺ and 40 μA for D⁺ will be extracted in dual opposite directions by charge exchange stripping devices and the extraction beam energy is continuously adjustable. The physics design of CYCIAE-70 stripping system has been done and the optics calculations for the extraction proton and deuteron beam have been finished. The dispersion effects for the extracted beam are analyzed and the beam parameters after extraction are calculated with multi-particle tracking code COMA.

MOPCP064

Amplifier Test Stand for the CRM Cyclotron

177

Z.G. Yin, K. Fei, B. Ji, P.Z. Li, G.S. Liu, G.F. Song, T.J. Zhang
CIAE, Beijing, People's Republic of China
C.J. Yu
CASIC, Beijing, People's Republic of China

Abstract: The final stage amplifier stability proves to be an important issue in the process of commissioning CRM cyclotron at CIAE. An air cooled 4CX15,000 tube final stage has been designed to evaluate the anode circuit and neutralization, both of which are weak points of the CRM cyclotron amplifier. Instead of strip line, the design of the new anode structure adopts coaxial form, resulting in less chance of parasitic resonance in the circuits. A tunable neutralization circuits is also included in the design, giving an opportunity to better stability in high power operations. First, the instability in CRM RF system will be analyzed in this paper followed with the new amplifier designs including the tube working line calculations, input/output circuit calculations and finite integral simulations. The mechanical design for tube socket and the anode tank have been successfully carried out using the data provided in this paper. The final stage amplifier is then fabricated, assembled and commissioned. In the power test with dummy load, more than 9.2kW RF fundamental power is provided at the frequency of 44MHz.