比较了计算机多道脉冲幅度分析系统与NIM(Nuclear I nstrument Module)多道脉冲幅度分析系统各自的特点,并介绍了后者的构架及其工作原理。对峰值展宽电路进行了功能分析和指标测试,并用NIM多道脉冲幅度采集卡进行了实际数据获取,从测...比较了计算机多道脉冲幅度分析系统与NIM(Nuclear I nstrument Module)多道脉冲幅度分析系统各自的特点,并介绍了后者的构架及其工作原理。对峰值展宽电路进行了功能分析和指标测试,并用NIM多道脉冲幅度采集卡进行了实际数据获取,从测得数据绘制出了脉冲幅度谱,其半高宽约为0.075%。在经过长达200多个小时的运行测试中,由该多道脉冲幅度采集卡与上位PC机组成的NIM数据获取系统工作稳定,已能初步满足小规模多参数数据获取系统的要求。展开更多
In order to satisfy the requirements of beam measurement in the heavy ion medical machine and other small nuclear physics experiments, we designed and built a nuclear instrumentation module-based data acquisition syst...In order to satisfy the requirements of beam measurement in the heavy ion medical machine and other small nuclear physics experiments, we designed and built a nuclear instrumentation module-based data acquisition system. This is composed of a set of functional modules and a purpose-built bus. One of the modules operates as a master, collecting data from the other slave modules. It then sends the data to the back-end computer via Ethernet.In addition to the hardware, dedicated software has been designed and implemented. In this paper, we provide a detailed description of the architecture of the system, the data frame, and the software. The bus is the central part of the system. It can transmit data from the slave modules to the master at 33 MB/s. The frame used to transmit the data also ensures its integrity and monitors the hardware architecture. The client software is designed to process data in real time and store data on a hard disk for later analysis.展开更多
A Nim-type computer game of strategy on plane is described in this paper. It is demonstrated that winning strategies of this two-person game are determined by a system of equations with two unknown integer sequences. ...A Nim-type computer game of strategy on plane is described in this paper. It is demonstrated that winning strategies of this two-person game are determined by a system of equations with two unknown integer sequences. Properties of winning points/states are discussed and an O(loglogn) algorithm for the winning states is provided. Two varieties of the Game are also introduced and their winning strategies are analyzed.展开更多
文摘比较了计算机多道脉冲幅度分析系统与NIM(Nuclear I nstrument Module)多道脉冲幅度分析系统各自的特点,并介绍了后者的构架及其工作原理。对峰值展宽电路进行了功能分析和指标测试,并用NIM多道脉冲幅度采集卡进行了实际数据获取,从测得数据绘制出了脉冲幅度谱,其半高宽约为0.075%。在经过长达200多个小时的运行测试中,由该多道脉冲幅度采集卡与上位PC机组成的NIM数据获取系统工作稳定,已能初步满足小规模多参数数据获取系统的要求。
基金supported by the Fundamental Research Funds for the Central Universities of China(2015CDJXY)
文摘In order to satisfy the requirements of beam measurement in the heavy ion medical machine and other small nuclear physics experiments, we designed and built a nuclear instrumentation module-based data acquisition system. This is composed of a set of functional modules and a purpose-built bus. One of the modules operates as a master, collecting data from the other slave modules. It then sends the data to the back-end computer via Ethernet.In addition to the hardware, dedicated software has been designed and implemented. In this paper, we provide a detailed description of the architecture of the system, the data frame, and the software. The bus is the central part of the system. It can transmit data from the slave modules to the master at 33 MB/s. The frame used to transmit the data also ensures its integrity and monitors the hardware architecture. The client software is designed to process data in real time and store data on a hard disk for later analysis.
文摘A Nim-type computer game of strategy on plane is described in this paper. It is demonstrated that winning strategies of this two-person game are determined by a system of equations with two unknown integer sequences. Properties of winning points/states are discussed and an O(loglogn) algorithm for the winning states is provided. Two varieties of the Game are also introduced and their winning strategies are analyzed.
