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1.
IHEP, China is constructing a 100 MeV/100 kW electron Linac for NSC KIPT, Ukraine. This linac will be used as the driver of a neutron source based on a subcritical assembly. In 2012, the injector part of the accelerator was pre-installed as a testing facility in the experimental hall ≠2 of IHEP. The injector beam and key hardware testing results met the design goal. Recently, the injector testing facility was disassembled and all of the components for the whole accelerator have been shipped to Ukraine from China by the ocean shipping. The installation of the whole machine in KIPT will be started in June, 2013. The construction progress, the design and testing results of the injector beam and key hardware are presented.  相似文献   
2.
近年来,对紧凑、稳定及可靠型电子直线加速器的需求越来越多,其能量主要分布在几百keV到十几个MeV的范围内,其中需求最多的则是能量在MeV量级的微波电子直线加速器。在这种形势下,中国科学院高能物理研究所正在研制一台S波段6 MeV的边耦合电子直线加速器,本文对基于该加速器的模拟计算研究进行了介绍。EGUN和HFSS分别用来设计电子枪和边耦合加速结构。通过将EGUN计算得到的电子束流参数和HFSS计算得到的三维电磁场分布数据引入到PARMELA中,完成了对该加速器的多粒子动力学研究。模拟结果显示,所设计的加速器完全能够满足设计指标的要求。最终,在考虑束流负载效应的因素后,完成了边耦合加速结构的微波结构设计。  相似文献   
3.
We designed a 100 MeV/100 kW electron linear accelerator for NSC KIPT, which will be used to drive a neutron source on the basis of subcritical assembly. Beam dynamics studies have been conducted to reach the design requirements (E=100 MeV, P=100 kW, dE/E<1% for 99% particles). In this paper, we will present the progress of the design and the dynamic simulation results. For high intensity and long beam pulse linear accelerators, the BBU effect is one big issue; special care has been taken in the accelerating structure design. To satisfy the energy spread requirement at the linac exit, the particles with large energy difference from the synchronous particle should be eliminated at a low energy stage to ease the design of the collimation system and radiation shielding. A dispersion free chicane with 4 bending magnets is introduced downstream of the 1st accelerating section; the unwanted particles will be collimated there.  相似文献   
4.
The upgrade project of the Beijing Electron Positron Collider (BEPCII) and its injector linac is working well. The linac upgrade aims at a higher injection rate of 5OmA/min into the storage ring, which requires an injected beam with low emittance, low energy spread and high beam orbit and energy stabilities. This goal is finally reached recently by upgrading the linac components and by dealing with rich and practical beam physics, which are described in this study.  相似文献   
5.
BEPCⅡ直线加速器的重大改造旨在获得高流强、小发射度和小能散的正负电子束, 以满足对撞机亮度提高两个两级的要求. 这对直线加速器各系统和束流物理是一个挑战. 文章介绍了直接决定束流性能的新电子源、新正电子源、新微波功率源、相位控制系统和束流测量系统等的改造情况; 叙述了束流物理研究; 介绍了束流调试进展情况和进一步改进计划.  相似文献   
6.
 基于单元器件的成功研制,介绍了Marx调制器单元充放电回路、电压和电流的实时监测以及控制系统和连锁保护等功能的设计和实现。对IGBT固态开关的静态、动态均压进行分析和模拟,采用RCD缓冲电路实现IGBT的动态均压;对控制系统改进和优化,设计了专用电源转换模块;分压电路和电流霍尔采样回路分别实现调制器单元电压和电流的检测;连锁保护功能由控制系统和继电器控制完成。所有部件按照电气标准设计在调制器单元支架上。经过测试的4个单元进行了叠加试验,4个单元总输出24 kV,各器件在高压试验中工作正常。  相似文献   
7.
ANL (Argonne National Laboratory) and the National Science Center “Kharkov Institute of Physics Technology” (NSC KIPT, Kharkov, Ukraine) jointly propose to design and build a 100 MeV/100 kW linear accelerator which will be used to drive the neutron source subcritical assembly. The linac has almost finished assembly in KIPT by a team from the Institute of High Energy Physics (IHEP, Beijing, China). The design and measurement result of the accelerating system of the linac will be described in this paper.  相似文献   
8.
ADS注入器Ⅰ高频四极场(RFQ)功率源系统将为325MHz RFQ提供连续波功率,使束流离开RFQ时,其能量达到几MeV。功率源系统除了补偿RFQ腔耗外,还必须提供足够的功率以保证RFQ中的加速电场。ADS注入器ⅠRFQ功率源系统主要包括600kW连续波速调管、80kV/18A基于脉冲步进调制技术的PSM电源、环流器以及相应的波导传输系统等。根据ADS总体指标和RFQ的相关技术参数,提出了功率源的总体布局、技术指标以及设计要求等,在此基础上完成系统安装与调试,并通过专家组测试与验收。  相似文献   
9.
In the NSC KIPT linac, a neutron source based on a subcritical assembly driven by a 100 MeV/100 kW electron linear accelerator is under design and development. The linear accelerator needs a new high current electron gun. In this paper, the physical design, mechanical fabrication and beam test of this new electron gun are described.The emission current is designed to be higher than 2 A for the pulse width of 3 μs with repetition rate of 50 Hz.The gun will operate with a DC high voltage power supply that can provide a high voltage up to 150 kV. Computer simulations and optimizations have been carried out in the design stage, including the gun geometry and beam transport line. The test results of high voltage conditioning and beam test are presented. The operation status of the electron gun system is also included. The basic test results show that the design, manufacture, and operation of the new electron system are basically successful.  相似文献   
10.
CSNS RCS注入涂抹凸轨磁铁脉冲电源设计   总被引:2,自引:0,他引:2  
中国散裂中子源(CSNS)快循环同步加速器(RCS)是一台高束流功率质子加速器, RCS注入系统是将直线加速器预加速的负氢离子束流通过剥离的方式注入到RCS环中, 注入系统采用凸轨方案和相空间涂抹技术并要求涂抹凸轨磁铁脉冲电源输出脉冲电流的下降沿能够被程序控制, 电源采用IGBT功率放大的方式产生脉冲电流, 用程序控制电源的给定波形, 通过电源反馈控制系统, 使电源的输出波形跟随电源的给定波形, 达到控制电源输出脉冲电流下降沿的目的. 电源输出脉冲电流的跟踪误差是涂抹凸轨磁铁脉冲电源的重要指标, 为了满足跟踪误差小于2%的指标, 要求IGBT拓扑频率大于400kHz. IGBT拓扑采用IGBTH桥串并联错相工作的方式达到分压、分流和提高频率的作用. 高功率、高频率、快速的响应时间和最佳的反馈控制策略是涂抹凸轨磁铁脉冲电源具有良好性能的关键.  相似文献   
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