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通过调用可执行文件*.exe的机制,研究并实现了在LabVIEW中调用专业数据分析软件ROOT的接口技术。结合两者优势,可搭建完善的数据获取和分析平台,极大提高实验效率。最后介绍了此方法在BESⅢ气体监测器数据获取分析系统和BESⅢ量能器晶体光性能测试系统中的成功应用。 相似文献
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宇宙线测试是北京谱仪BESⅢ漂移室建造过程中的重要环节,测试联合BESⅢ电子学、数据获取、触发判选等系统共同进行.BESⅢ数据获取系统在数据获取期间需要实时监测事例数据,其中单事例显示是在线监测的一种重要手段.本文主要介绍了宇宙线测试系统单事例显示中事例径迹击中的空间位置计算方法. 相似文献
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讨论了应用普通的PC机和Linux操作系统以及其他免费软件实现的BESⅢ在线数据获取系统的测试计算机集群的设计与实现.系统运行正常,并且为在线软件提供了很好的反馈以及诊断.所采用的技术将被应用到实际的BESⅢ在线数据获取系统上.同时也可以应用到其他目的的集群系统上,如物理分析. 相似文献
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主要介绍BESⅢ EMC在线台阶模式的相关研究与实现.详细描述在线台阶模式中的两种数据分析算法、关键模块及其功能.并对两种算法在有无束流影响下的结果和优劣进行了比较分析.该系统用于BESⅢ数据获取系统中对探测器电子学通道进行噪声水平监测,正常取数时对数据进行零压缩. 相似文献
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北京谱议BESⅢ正在建造之中, BESⅢ在线数据获取系统根据最初的设计报告中的要求采用了由CMT(配置管理工具)、CVS(并行版本系统)和Doxygen组成的平台来开发其软件.这种选择不但使用方便而且功能强大,给开发工作带来了高效率,将挑重点介绍这一平台在实际应用中所显示出来的优点. 相似文献
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介绍了如何用PowerPC汇编实现BES Ⅲ数据获取读出系统中的机箱级数据组装.文章首先简单介绍了数据组装模块在整个读出系统中的功能,然后着重介绍了用汇编实现数据组装的细节,并与C语言版本进行了性能比较. 相似文献
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B. N. Laskorin V. S. Ul'yanov R. A. Sviridova A. M. Arzhatkin A. I. Yuzhin 《Atomic Energy》1961,7(2):620-625
Chromatographic methods of separating elements with very similar properties have now been developed. However, a number of these methods are difficult to use industrially as their throughput is low. The efficiency of chromatographic separation methods could be increased considerably by using appropriate complex formers, which decrease the effective concentration of the ions being separated, and,in the first approximation, this is equivalent to a decrease in the amount of elements being separated. The difference in the formation constants of the complex compounds increases the separation coefficient. By investigating chromatographic separation with the use of various complex formers, we found the optimal conditions for separating barium and radium, zirconium and hafnium, and aluminum and gallium. The throughput of these methods, with respect to the macroelement was 15–60 kg/hr per m2 of column cross section. 相似文献
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随着核与辐射技术在医学检查、诊断和治疗领域运用的增加,世界范围受照人群不断增多,医源性辐射已成为人类最主要的人工辐射来源之一。医疗机构和个人在选择利用放射手段获取诊断和治疗利益的同时,需要注意和防护伴随的辐射损伤效应。本文介绍了医源性辐射及其危害、机体组织的辐射损伤特性和类型、辐射生物效应分子及效应调节研究的进展,简要概述目前临床已经使用或最具应用潜力的辐射防护策略。 相似文献
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《Journal of Nuclear Science and Technology》2013,50(4):284-291
The selective removal and fixation of Cs and Sr have been studied in zeolite A and chabazite. Cesium ion was preferentially distributed into chabazite with a high distribution coefficient (K Cs>103 cm3·g?1) in the presence of NaCl (10?1 mol·dm?3). The K Sr values for zeolite A attained about 103 cm3·g?1 in the pH range of 8~10, and they gradually decreased with an decrease in pH. The initial rate of Cs adsorption was fairly fast in chabazite, and the adsorption ratio reached almost 100% within a few hours. The adsorption ratio of Sr in binderless A zeolite reached almost 100% after 15 h. The adsorption of Cs and Sr on these zeolites was followed by Langmuir-type isotherm. Cesium forms of these zeolites recrystallized to pollucite (CsAlSi2O6) above 900°C for zeolite A and above 1,200°C for chabazite. As for Sr forms, these zeolites changed to SrAl2Si2O6 above 900°C. These recrystallized phases were suitable hosts for the immobilization of Cs and Sr in the nuclear waste solutions. 相似文献
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清洁解控和退役若干动向与新发展 总被引:2,自引:0,他引:2
对国际辐射防护协会第 1 0届大会 ( IRPA-1 0 )涉及的清洁解控和退役问题作了论述 ,包括排除、豁免、清洁解控和废物最少化 ;退役工程技术的发展 ,包括去污技术、切割解体技术、探测技术 ;介绍了一个研究堆退役例子和加速器退役 ;最后 ,还论及了退役中受关注的一些问题 ,如 :石墨废物、混凝土废物、重水堆退役的氚防护、退役时间和退役废物量等。 相似文献
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Hui-Wen Huang Author Vitae Chunkuan Shih Ming-Huei Chen 《Nuclear Engineering and Design》2009,239(6):1136-1147
This work developed an advanced boiling water reactor (ABWR) feedwater pump and controller model, which was incorporated into Personal Computer Transient Analyzer (PCTran)-ABWR, a nuclear power plant simulation code. The feedwater pump model includes three turbine-driven feedwater pumps and one motor-driven feedwater pump. The feedwater controller includes a one-element/three-element water level controller and a specific feedwater speed controller for each feedwater pump. The performance tests, including step change of dome pressure, feedwater pumps transfer, inadvertent closure of all turbine control valves, and one feedwater pump trip at 100% power, demonstrate the feasibility of dynamic response of stand-alone model and incorporated model. Furthermore, a diversity and defense-in-depth analysis is performed to demonstrate the feasibility for motor-driven feedwater pump as an emergency core cooling system (ECCS) automatic diverse back-up. In Lungmen nuclear power plant (NPP), a diverse manual initiation means for the high pressure core flooder (HPCF) loop C is designed as the back-up of digitalized engineered safety features actuation system (ESFAS). If the motor-driven feedwater pump (MDFWP) can be an automatic digital diverse back-up for ESFAS, Lungmen NPP would be more robust to defend against software common-cause failure (CCF). 相似文献
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A. Chrysochoos O. Maisonneuve G. Martin H. Caumon J.C. Chezeaux 《Nuclear Engineering and Design》1989,114(3)
This paper depicts one theoretical and experimental method to take into account the energy phenomena, associated with the elasto—plastic deformation process, during the elaboration of behaviour laws. The energy balance definition is examined in order to relate the stored energy of cold work to the hardening state variables. Two experimental approaches are used to study the evolution of the energy balance. The first one uses microcalorimetric technique and the second infrared technique. Several industrial metallic materials are studied by both approaches. Energy data are used to control the validity domain of the classical behaviour laws and to elaborate new more appropriate ones. Therefore, the hardening parameters cannot be identified with the thermodynamical forces. The use of energy considerations allows the definition of new thermodynamical forces and state variables, in the case of isotropic or kinematical hardening. 相似文献
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Past experience with small and medium power reactors (SMPRs) in the areas of construction and operation is examined in this paper. Current development of SMPRs focuses on passive safety features; larger design and safety margins; reduction of construction periods through simplification, modularization and increased shop fabrication. 相似文献