国家自然科学基金(10979045)

作品数：8被引量：5H指数：2
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Optimization of magnet sorting in a storage ring using genetic algorithms
《Chinese Physics C》2013年第12期98-104,共7页陈佳 王琳 李为民 高巍巍 
Supported by National Natural Science Foundation of China(10979045,11175180,11175182)
In this paper, the genetic algorithms are applied to the optimization problem of magnet sorting in an electron storage ring, according to which the objectives are set so that the closed orbit distortion and beta beati...
关键词：storage ring magnet sorting closed orbit distortion beta beating dynamic aperture genetic algorithms 
Analytic modeling of instabilities driven by higher-order modes in the HLS Ⅱ RF system with a higher-harmonic cavity
《Chinese Physics C》2013年第8期73-75,共3页赵宇宁 李为民 吴丛凤 王琳 
Supported by National Natural Science Foundation of China (10979045, 11175180, 11175182)
The utility of a passive fourth-harmonic cavity plays a key role in suppressing longitudinal beam insta- bilities in the electron storage ring and lengthens the bunch by a factor of 2.6 for the phase I[ project of the...
关键词：parasitic coupled-bunch instability microwave instability higher-harmonic cavity analytic modeling higher-order mode 
Lattice study for the HLS-Ⅱ storage ring
《Chinese Physics C》2013年第4期87-92,共6页白正贺 王琳 贾启卡 李为民 
Supported by National Natural Science Foundation of China (11175182, 10979045)
The Hefei Light Source （HLS） is undergoing a major upgrade project, named HLS-Ⅱ , in order to obtain lower emittance and more insertion device straight sections. Undulators are the main insertion devices in the HLS...
关键词：storage ring LATTICE UNDULATOR BRIGHTNESS EMITTANCE particle swarm optimization 
Design and optimization of a longitudinal feedback kicker cavity for the HLS-Ⅱ storage ring
《Chinese Physics C》2013年第3期84-92,共9页徐卫 W.Z.Wu 何多慧 Y.K.Wu 
Supported by National Natural Science Foundation of China (10979045, 11175182, 11175180)
In the Hefei Light Source （HLS） storage ring, multibunch operation is used to obtain a high luminosity. Multibunch instabilities can severely limit light source performance with a variety of negative impacts, includ...
关键词：longitudinal feedback system kicker nose cone 
Lattice optimization for the HLS-Ⅱ storage ring被引量：3
《Chinese Physics C》2013年第1期100-106,共7页白正贺 王琳 贾启卡 李为民 
Supported by National Natural Science Foundation of China(11175182, 10979045)
The upgrade project of the Hefei Light Source （HLS）, named HLS-Ⅱ, is under way, whose storage ring will be reconstructed. The HLS-Ⅱ storage ring has lower emittance and more straight sections available for inserti...
关键词：storage ring LATTICE SCAN OPTIMIZATION EMITTANCE dynamic aperture 
Study of Robinson instabilities with a higher-harmonic cavity for the HLS phase Ⅱ project
《Chinese Physics C》2012年第11期1136-1139,共4页赵宇宁 李为民 吴丛凤 王琳 
Supported by National Natural Science Foundation of China(10979045,11175180,11175182)
In the Phase Ⅱ Project at the Hefei Light Source, a fourth-harmonic ＂Landau＂ cavity will be operated in order to suppress the coupled-bunch instabilities and increase the beam lifetime of the Hefei storage ring. In...
关键词：Robinson instability higher-harmonic cavity analytic modeling Landau damping rate simulation energy spread 
The magnet design for the HLS storage ring upgrade project被引量：2
《Chinese Physics C》2012年第1期91-95,共5页张浩 李为民 冯光耀 王琳 张善才 李为 梁军军 
Supported by National Natural Science Foundation of China (10905054,10979045,10875127)
In order to improve the performance of the Hefei Light Source （HLS）,in particular to get higher brilliance synchrotron radiation and increase the number of straight section insertion devices,an upgrade project calle...
关键词：storage ring magnet combined function conformal mapping water-cooling channel 
Low emittance lattice optimization using a multi-objective evolutionary algorithm被引量：1
《Chinese Physics C》2011年第9期859-864,共6页高巍巍 王琳 李为民 何多慧 
Supported by National Natural Science Foundation of China (10875127,10979045)
A low emittance lattice design and optimization procedure are systematically studied with a non-dominated sorting-based multi-objective evolutionary algorithm which not only globally searches the low emittance lattice...
关键词：EMITTANCE multi-objective evolutionary algorithm LATTICE 
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