HIRFL-CSR commissioning in 2006 and 2007

HIRFL-CSR, a new heavy ion cooler-storage-ring system at IMP, had been in commissioning since the beginning of 2006. In the two years of 2006 and 2007 the CSR commissioning was finished, including the stripping injection (STI), electron-cooling with hollow electron beam, C-beam stacking with the combination of STI and e-cooling, the wide energy-range synchrotron ramping from 7 MeV/u to 1000 MeV/u by changing the RF harmonic-number at mid-energy, the multiple multi-turn injection (MMI), the beam accumulation with MMI and e-cooling for heavy-ion beams of Ar, Kr and Xe, the fast extraction from CSRm and single-turn injection to CSRe, beam stacking in CSRe and the RIBs mass-spectrometer test with the isochronous mode in CSRe by using the time-of-flight method.

HIRFL-CSR频谱现象：中心频率突变分析研究

In commissioning the HIRFL-CSR (Cooler Storage Ring of Heavy Ion Research Facility in Lanzhou),with the spectrum analyzer monitoring the beams on-line, we measured many parameters of the beam status for improving quality of the heavy ion beams. In this paper, the sudden change of the beam center frequency is analyzed.A theoretical analysis is done mainly on instabilities of the electron voltage and the neutralization factor. Simulations were made for the problem. According to the simulation result, we can conclude that it is the instability of neutralization factor that caused the problem. 中文摘要：HIRFL-CSR调试过程中，利用频谱分析仪实时监测束流，根据其上测的数据进行相关参数调整，改善束流的品质。本文对分析仪上观测到的现象一束流的中心频率发生突变进行了研究，主要就电子束的高压不稳定性和中性化因子的突变做了理论分析，并进行了相关的模拟计算 ，根据模拟结果初步断定该现象的出现由电子束的中性化因子导致。

HIRFL-CSR前端总线控制器的SD驱动

The HIRFL-CSR EVME bus controller, which runs Embedded Linux OS, is based on AT91RM9200 microprocessor, whose core is ARM920T. There are hardware interface electronic circuits connecting AT91RM9200 microprocessor and Security Digital Memory Card (SD Card). This article analyzes Operation System kernel and Linux device driver’s structure, designs SD Card driver based on Embedded Linux, which runs on AT91RM9200 microprocessor.中文文摘：简要论述了用于兰州重离子加速器冷却储存环(HIRFL-CSR)控制系统的前端总线控制器。该控制器是基于ARM920T核心的AT91RM9200处理器,运行嵌入式Linux操作系统。描述了AT91RM9200处理器与Security Digital MemoryCard(SD卡)的硬件接口电路,分析了操作系统内核和Linux驱动程序结构,设计和实现了嵌入式Linux下基于AT91RM9200处理器的SD卡驱动程序。

基于分布式内存数据库的HIRFL-CSR真空监控系统

This paper introduced a real-time vacuum monitor system based on multilayer Web architecture for HIRFL-CSR(Heavy Ion Research Facility of Lanzhou & Cooler Storage Ring) project in Lanzhou.It combined with COM/DCOM to develop the application layer,and developed the web layer with ActiveX and Ajax technology.It provided a facility and efficiency method for real-time control.The application shows that this system runs stably and accurately.中文文摘：简要介绍了国家"九五"重大科学工程——兰州重离子加速器冷却储存环(HIRFL-CSR)真空监控系统的总体结构,分析了在Web构架下,基于分布式内存数据库的多层真空监控系统的实现方法。采用分布式内存数据库,解决了基于Web构架的分布式实时应用环境下对系统和网络资源的消耗问题。在软件控制方面采用了统一调度,既简化了软件实现过程,又提高了系统的安全性、高效性和易维护性。该系统已成功运行。

HIRFL-CSR前端总线控制器的改进设计

论述了用于兰州重离子加速器冷却存储环(HIRFL-CSR)控制系统的前端总线系统控制器的改进。改进了控制器的嵌入式操作系统和应用程序,开发了控制器和数据库交换数据的应用程序。该控制器基于BGA封装的ARM920T(ARM9)处理器和嵌入式的LINUX操作系统,可以连接标准的VGA显示器、键盘、鼠标,采用了现场可编程的FPGA器件进行背板接口设计,并具有64mA高驱动能力的总线驱动器,以及拥有灵活的接口信号定义可编程能力,是HIRFL-CSR控制系统的关键部件。

应用于HIRFL-CSR分布式真空控制系统的故障转移技术

介绍了国家"九五"重大科学工程——兰州重离子加速器冷却储存环(HIRFL-CSR)真空控制系统的运行环境,分析了基于Web多层分布式真空控制系统的应用冗余问题,给出了分布式应用环境中故障应用的转移托管解决思路。在不增加任何资源的前提下,收到了很好的应用效果。

HIRFL-CSR上治癌重离子束的生物物理特性研究

<正>重离子治癌是放射治疗领域先进、有效的技术。因而,国际上凡具备重离子加速器条件的国家均在开展重离子治癌基础研究,并努力促使肿瘤重离子临床治疗试验研究的