Paper | Title | Page |
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MOZBA01 | Present Status of HIRFL Complex in Lanzhou | 18 |
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Heavy Ion Research Facility in Lanzhou (HIRFL) is a cyclotron, synchrotron and storage ring accelerator complex, which accelerates ions of hydrogen to uranium from low to medium energy. Since the complete of HIRFL-CSR project in 2008, under the support from CAS, efforts have been put to improve the infrastructure for machine performance, including improvement of EMC environments, power distribution stations, PS stations, cooling water system, RF system of cyclotrons and adoption of EPICS control system, etc. New generation SC ECR source-SECRAL2 with high performance is put into operation. Experiments of electron cooling with pulsed electron beam are performed for the 1st time. Stochastic cooling and laser cooling are realized in CSRe. The performance of RIBLL2 and CSRe are gradu-ally improved. The ISO mode of CSRe for precise atomic mass measurements is well studied and reaches state-of-art mass resolution of storage rings. The operation status and enhancement plan of HIRFL will be briefly reported in this paper. | ||
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Slides MOZBA01 [37.124 MB] | |
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-MOZBA01 | |
About • | paper received ※ 20 October 2018 paper accepted ※ 23 October 2018 issue date ※ 05 November 2019 | |
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WEPB03 | Multi-physics Analysis of a CW Four-rod RFQ | 138 |
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The new injector SSC-LINAC is under design and con-struction to improve the efficiency and intensity of beams for the Separated-Sector Cyclotron (SSC). This will be accomplished with a normal conducting radio-frequency quadrupole (RFQ) accelerator. To match with the SSC, the RFQ must be operated on Continuous Wave (CW) mode with a frequency of 53.667 MHz. A four-rod structure was adopted for small dimensions of the cavity. While, it was a huge challenge on CW mode. A multi-physics theoretical analysis, including RF, thermal, struc-tural and frequency shift coupling analysis, have been completed in response to the security and stable opera-tion of the RFQ. The experimental measurement of fre-quency shift was also completed, which is consistent with the simulation. In this paper, the results of theoretical analysis and experiment are reported in detail. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB03 | |
About • | paper received ※ 09 November 2018 paper accepted ※ 14 November 2019 issue date ※ 05 November 2019 | |
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WEPB08 | Dynamics Study of a Drift Tube Linac for Both Heavy Ions and Proton | 148 |
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Funding: Work supported by National Natural Science Foundation of China (11375243, 11405237) and Guangdong Innovative and Entrepreneurial Research Team Program (2016ZT06G373). An accelerator complex for Space Environment Simu-lation and Research Infrastructure (SESRI) has been designed by Institute of Modern Physics (IMP) and will be constructed in Harbin Institute of Technology (HIT). This accelerator consists of an ECR ion source, a linac injector, a synchrotron and 3 research terminals. As an important part of the complex, the linac injector should provide both proton and different kinds of heavy ions, from helium to bismuth, with energy of 5 MeV and 1 MeV/u respectively for the synchrotron. In order to provide beams with the mass to charge ratio (A/Q) range from 1 ’ 6.5(for proton to 209Bi32+) by only one linac injector, a special solution of the main acceleration section DTL is carried out. The relevant dynamics calculations, such as beam matching, stripping process of the hydrogen molecule ion and beam energy spread reducing, are performed by Particle in Cell (PIC) method. |
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Poster WEPB08 [2.541 MB] | |
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB08 | |
About • | paper received ※ 19 October 2018 paper accepted ※ 23 October 2018 issue date ※ 05 November 2019 | |
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WEPB12 | Error Analysis and RF Optimization of a Compact RFQ | 155 |
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A 162.5 MHz, 7.2 MeV 4-rod radio frequency quadru-ples (RFQ) dynamics design has been finished for injec-tor of a carbon ion cancer therapy facility which is pro-moted by the Institution of Modern Physics (IMP) of the Chinese Academy of Science (CAS). A detailed error analysis was performed after the optimization process. Field flatness error is analysed for determining a RF optimization target. The RF structure is designed based on a new type dynamics design. Electric field of the RF structure is optimized in order to supporting the dynam-ics design. The error analysis and detailed field flatness optimization of this compact RFQ have been presented and discussed in this paper. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEPB12 | |
About • | paper received ※ 19 October 2018 paper accepted ※ 23 October 2018 issue date ※ 05 November 2019 | |
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