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ZHANG Meng, LU Yuan-Rong, PENG Shi-Xiang, ZHU Kun, YAN Xue-Qing, GAO Shu-Li, WANG Zhi, GUO Zhi-Yu, ZHAO Jie, FANG Jia-Xun, LI Wei-Guo, GUO Ju-Fang, YUAN Zhong-Xi, SONG Zhi-Zhong, YU Jin-Xiang, YU Mao-Lin and CHEN Jia-Er. Upgrading of a Heavy Ion 1MeV ISR RFQ Accelerator[J]. Chinese Physics C, 2008, 32(S1): 262-264.
ZHANG Meng, LU Yuan-Rong, PENG Shi-Xiang, ZHU Kun, YAN Xue-Qing, GAO Shu-Li, WANG Zhi, GUO Zhi-Yu, ZHAO Jie, FANG Jia-Xun, LI Wei-Guo, GUO Ju-Fang, YUAN Zhong-Xi, SONG Zhi-Zhong, YU Jin-Xiang, YU Mao-Lin and CHEN Jia-Er. Upgrading of a Heavy Ion 1MeV ISR RFQ Accelerator[J]. Chinese Physics C, 2008, 32(S1): 262-264. shu
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Received: 2008-01-11
Revised: 1900-01-01
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Upgrading of a Heavy Ion 1MeV ISR RFQ Accelerator

    Corresponding author: ZHANG Meng,

Abstract: This paper presents new beam test results for O+ beam on a high current Integral Split Ring Radio Frequency Quadruple (ISR RFQ) accelerator. After the upgrading, a new designed 2.45GHz O+ ECR Ion Source can provide a beam with macro-pulse peak current of 4mA at the injection point behind a 15mm diaphragm, whose O+ factor is 60%—80% varied with gas flow rate and the normalized rms emittance is less than 0.15πmm﹒mrad. The accelerated O+ beam current goes up to 2mA with the transmission of about 80% at 45kW RF power with duty factor 1/6 (pulse duration of 1ms and repetition frequency of 166Hz). The upgraded RF power system includes low level RF pulse modulation amplifier, AGC, 3W and 20W preamplifiers, 1kW driver and 30kW final amplifier, which can output nearly 50kW in pulsed mode. The vacuum has been improved, too. The upgraded 1MeV ISR RFQ can be used as the beam injector of a new designed SFRFQ accelerating system, which is under the construction at Peking University.

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