Paper | Title | Page |
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MOPO087 | Cold Test of Hybrid RFQ Prototype | 184 |
SPWR012 | use link to see paper's listing under its alternate paper code | |
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Hybrid RFQ is proposed as a potential good choice at the low-energy range of linear accelerator, which is combined by four-vane RFQ structure and CH-DTL structure. It has higher energy gain rate compared to conventional RFQ, and it is more compact than traditional DTL. In order to research on process exploration and RF parameters of this structure, an aluminium prototype is developed. The cold test of Hybrid RFQ prototype is completed. This paper will present the results and analysis of the test. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-MOPO087 | |
About • | paper received ※ 12 September 2018 paper accepted ※ 21 September 2018 issue date ※ 18 January 2019 | |
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TUPO101 | Design of Practical HSC Type Injector for Cancer Therapy | 557 |
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The Hybrid single cavity(HSC), which is designed for 20 mA beam acceleration, is a new HSC Type Injector for Cancer Therapy. Its designed particle, resonant frequency, injection and final energies are designed from beam-optics considerations of the entire system to be C6+, 100MHz, 20keV/u and 0.6MeV/u. In order to achieve these requirements, keeping the Maximum surface electric field to less than 1.9-times the Kilpatrick limit, the RFQ becomes about 1.2 m long and the DTL is about 2.5 m long. The total efficiency of transmission is more than 80%. | ||
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Poster TUPO101 [0.345 MB] | |
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-TUPO101 | |
About • | paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019 | |
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THPO050 | Research on the New Cavity Structure of RFQ Accelerator With Bent Vanes at IMP | 802 |
THOP03 | use link to see paper's listing under its alternate paper code | |
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A new cavity structure of RFQ accelerator with bent vanes is proposed to meet the miniaturization requirement of low frequency heavy ion accelerators at Institute of Modern Physics (IMP), Chinese Academy of Sciences. The new structure has a downsized cross section by bending vanes while keeping a certain vane lengths. It also possesses the advantages of simple cooling structure and high power efficient when used in low frequency. The new structure has obvious advantages in reducing manufacturing difficulty of cavity, cutting down project cost, enhancing facility reliability and stability. | ||
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Slides THPO050 [1.407 MB] | |
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Poster THPO050 [0.398 MB] | |
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO050 | |
About • | paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019 | |
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THPO051 | The Multi-physics Analysis of LEAF RFQ | 805 |
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The 81.25 MHz CW RFQ is designed to accelerate heavy ions with Q/A from 1/7 to 1/2 at 0.5 MeV/u for the Low Energy Accelerator Facility (LEAF) at the Institute of Modern Physics (IMP) of the Chinese Academy of Science (CAS). The four-vane RFQ consists of six mod-ules with a total length of 5.95 meters, For the CW oper-ating mode, thermal management will be a very important issue, Therefore a multi-physics analysis is necessary to ensure that the cavity can stably operate at the high RF power . The multi-physics analysis process includes RF electromagnetic analysis, thermal analysis, mechanical analysis, and the frequency shift, the cooling water system is used for frequency tunning by the temperature adjustment, and also analyze RFQ undercuts, fixed tuners, and pi-mode rods, the results show that the thermal and structural design of this RFQ is reasonable. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO051 | |
About • | paper received ※ 17 September 2018 paper accepted ※ 21 September 2018 issue date ※ 18 January 2019 | |
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THPO053 | Status of the China Material Irradiation Facility RFQ | 811 |
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Funding: Supported by the National Magnetic Confinement Fusion Science Program of China (Grant No.2014GB104001) and the National Natural Science Foundation of China (Grant No.91426303). The pulsed high power test and beam test of the China Material Irradiation Facility RFQ have been implemented. Before this, the radio frequency measurements and tuning are performed. In this paper, the processes and results of the radio frequency measurements, tuning, pulsed high power test and beam test will be presented. The results of tests are in good agreement with the design. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO053 | |
About • | paper received ※ 12 September 2018 paper accepted ※ 21 September 2018 issue date ※ 18 January 2019 | |
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THPO090 | The Analysis of Module Failure in High Solid-state Amplifier for High Current RFQ | 886 |
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New accelerator RF system was upgraded to the solid-state amplifier in ADS project due to its stable, sustainable and reliable. Until now, newest 80kW SSA was adopted in IMP, operating in 162.5MHz, and over 120 power modules were combined through several synthesizers for 80kW output. but since too many modules were optimized for amplitude and phase in the same time, one or some failure of circulator will lead to injure of whole RF system, when wavelength meets a specific condition, injure would turn out severe accident and heavy loss. In this paper, analyzing and simulating the multi-level synthetic matrix was the important method for ADS accident happened in June 20. 2017, the failure simulated results for RF amplify links under the specific circumstances also was presented simultaneously. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO090 | |
About • | paper received ※ 17 September 2018 paper accepted ※ 31 October 2018 issue date ※ 18 January 2019 | |
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