国家自然科学基金(10675116)

作品数:11被引量:3H指数:1
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相关作者:吴丛凤樊浩田秀芳王琳刘广超更多>>
相关机构:中国科学技术大学更多>>
相关期刊:《Chinese Physics C》《量子电子学报》《Science China(Physics,Mechanics & Astronomy)》《核技术》更多>>
相关主题:CAVITYHARMONICMEDIUMLIFETIMEHL更多>>
相关领域:核科学技术理学自然科学总论电子电信更多>>
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Electron bunching in a Penning trap and accelerating process for CO_2 gas mixture active medium
《Chinese Physics C》2015年第12期84-88,共5页田秀芳 吴丛凤 贾启卡 
Supported by National Natural Science Foundation of China(10675116);Major State Basic Research Development Programme of China(2011CB808301)
In PASER (particle acceleration by stimulated emission of radiation), in the presence of an active medium incorporated in a Penning trap, moving electrons can become bunched, and as they get enough energy, they esca...
关键词:PASER Penning trap active gas mixture medium electron bunching 
Particle acceleration by stimulated emission of radiation in cylindrical waveguide
《Chinese Physics C》2015年第7期88-92,共5页田秀芳 吴丛凤 贾启卡 
Supported by National Natural Science Foundation of China(10675116);Major State Basic Research Development Programme of China(2011CB808301)
In particle acceleration by stimulated emission of radiation(PASER), efficient interaction occurs when a train of micro-bunches has periodicity identical to the resonance frequency of the medium. Previous theoretica...
关键词:PASER train of micro-bunches active gas mixture medium cylinder waveguide 
Calculations for shortening the bunch length in storage rings using a harmonic cavity
《Chinese Physics C》2014年第8期82-87,共6页樊浩 吴丛凤 何多慧 
Supported by National Nature Science Foundation of China(10675116);Major State Basic Research Development Programme of China(2011CB808301)
Using the Hefei Light Source phase Ⅱ project (HLS- Ⅱ) as an example, a theoretical analysis of shortening the bunch lengths using a higher harmonic cavity (HHC) is given. The threshold voltage of an active HHC a...
关键词:shortening bunch harmonic cavity bunch length operating scenario synchrotron frequency spread 
PASER在混合气体激活介质中的理论计算(英文)
《量子电子学报》2014年第1期33-39,共7页田秀芳 吴丛凤 
Supported by National Natural Science Foundation of China(10675116);Major State Basic ResearchDevelopment Programme of China(2011CB808301)
在受激辐射粒子加速(PASER)中,受激介质中处于激发态的电子跃迁到基态时辐射的光子能量直接以量子形式转移给从它旁边经过的电子、首先对单个电子柬团穿过受激介质时产生的电场进行了理论推导,并分别对受激的二氧化碳混合气体和受激氟...
关键词:受激辐射粒子加速 受激混合气体 加速梯度 能量增益 
减小直线加速器耦合腔中不对称性的方法被引量:1
《核技术》2013年第7期8-12,共5页魏献林 吴丛凤 
国家自然科学基金项目(10675116);国家重点基础研究发展计划项目(2011CB808301)资助
随着高能物理的发展,特别是大型对撞机、FEL和高亮度同步辐射光源,均对直线加速器的性能提出了更高的要求。单边耦合器结构的不对称性破坏了耦合腔中场的对称性分布,降低了束流的品质。为了改善不对称性,利用CST微波工作室模拟设计了X...
关键词:耦合器 场分布 能散 粒子束团 
Tracking simulations for the HLS-Ⅱ with a passive harmonic cavity in the symmetric and asymmetric fill patterns
《Chinese Physics C》2012年第11期1111-1115,共5页樊浩 吴丛凤 王琳 
Supported by National Natural Science Foundation of China(10675116);Major State Basic Research Development Programme of China(2011CB808301)
A simulation code that executes the tracking of longitudinal oscillations of the bunches for the double rf system of the Hefei Light Source Ⅱ Project (HLS-Ⅱ) is presented to estimate the mean beam lifetime and the...
关键词:tracking code fill pattern Robinson instabilities harmonic cavity 
Preliminary study of the higher-harmonic cavity for HLS-Ⅱ
《Chinese Physics C》2012年第9期891-894,共4页吴丛凤 樊浩 王琳 刘广超 冯光耀 李为民 R.A.Bosch 
Supported by National Natural Science Foundation of China (10675116);Major State Basic Research Development Programme of China(2011CB808301)
A higher-harmonic cavity will be used to increase the beam lifetime and suppress coupled-bunch instabilities for Hefei Light Source-II. In this paper, results simulated by the particle-tracking model confirm that tuni...
关键词:harmonic cavity INSTABILITIES lifetime improvement HOMs damping 
Calculations of operating schemes for a passive harmonic cavity in HLS-Ⅱ
《Chinese Physics C》2012年第9期895-899,共5页樊浩 吴丛凤 刘广超 
Supported by National Natural Science Foundation of China (10675116);Major State Basic Research Development Programme of China (2011CB808301)
A passive higher harmonic cavity (HHC) will be used in the Hefei Light Source II Project (HLS- II) to lengthen the bunch and consequently increase the beam lifetime dominated by Touschek scattering. The effects of...
关键词:harmonic cavity lifetime improvement bunch length operating scheme 
New construction of hybrid and aperiodic ordered PBG cavity被引量:2
《Science China(Physics,Mechanics & Astronomy)》2011年第S2期207-209,共3页ZHAO JingXiong WU CongFeng FAN Hao LI Bo DONG Sai 
supported by the National Natural Science Foundation of China (Grant No. 10675116);the Major State Basic Research Development Programme of China (Grant No. 2011CB808301)
The band gap of a photonic crystal (PhC) cavity intrinsically avoids HOM problems. In this paper, we present a new PBG structure based on the possible advantage of using hybrid structures and aperiodic lattices. This ...
关键词:PBG HYBRID aperiodic HIGH Q-factor 
应用被动式高次谐波腔改善合肥光源的束流寿命(英文)
《量子电子学报》2011年第5期528-533,共6页刘广超 吴丛凤 王琳 樊浩 
Supported by the National Nature Science Foundation of China(10675116);Hefei Light Source Ⅱ Project
高次谐波腔被用于同步辐射光源中拉长束团,降低束团密度,从而提高束流寿命,并且对光源亮度影响很小。理论推导了加入高次谐波腔之后的有关纵向束流动力学方程,计算了改造后的合肥光源(HLS-II)在加入三次谐波腔时最优条件下的寿命改善因...
关键词:同步辐射光源 束流寿命 高次谐波腔 束流负载效应 高次模阻尼 
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