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<正>她用物理的情趣,引我们科苑揽胜;她用知识的力量,助我们奋起攀登!《现代物理知识》杂志隶属于中国物理学会,由中国科学院高能物理研究所主办,是我国物理学领域的中、高级科普性期刊。为进一步提高《现代物理知识》的学术水平,欢迎物理学界的各位专家、学者以及研究生为本刊撰写更多优秀的科普文章。投稿时请将稿件的Word文档发送至本刊电子信箱mp@mail.ihep.ac.cn,并请将联系人姓名、详细地址、邮政编码,以及电话、电子信箱等联系方式附于文章末尾。     

欢迎投稿,欢迎订阅

《现代物理知识》杂志隶属于中国物理学会,由中国科学院高能物理研究所主办,是我国物理学领域的中、高级科普性期刊。为进一步提高《现代物理知识》的学术水平,欢迎物理学界的各位专家、学者以及研究生为本刊撰写更多优秀的科普文章。     

欢迎投稿,欢迎订阅

《现代物理知识》杂志隶属于中国物理学会,由中国科学院高能物理研究所主办,是我国物理学领域的中、高级科普性期刊。其前身是创刊于1976年的《高能物理》杂志。该刊以生动活泼的语言介绍现代物理知识、传递科技前沿动态,以深入浅出的形式做到科学性和趣味性并重。适合广大的科学工作者、教育工作者、科学管理干部、大学生、中学生以及其他物理学爱好者阅读。     

欢迎投稿,欢迎订阅

《现代物理知识》杂志隶属于中国物理学会,由中国科学院高能物理研究所主办,是我国物理学领域的中、高级科普性期刊。其前身是创刊于1976年的《高能物理》杂志。该刊以生动活泼的语言介绍现代物理知识、传递科技前沿动态,以深入浅出     

欢迎投稿,欢迎订阅

她用物理的情趣,引我们科苑揽胜;她用知识的力量,助我们奋起攀登!《现代物理知识》杂志隶属于中国物理学会,由中国科学院高能物理研究所主办,是我国物理学领域的中、高级科普性期刊。其前身是创刊于1976年的《高能物理》杂志。该刊以生动活泼的语言介绍现代物理知识、传递科技前沿动态,以深入浅出的形式做到科学性和趣味性并重。适合广大的科学     

高能物理四十年来的发展

本文综述了四十年来高能物理在国际上的进展和所取得的主要成果，介绍了建国以来我国高能物理的发展和所取得的主要成果，展望了未来的发展．     

94全国高能物理暨第四届会员代表大会

 ^<sup>’94全国高能物理暨第四届会员代表大会@江向东.     

Deployment of Globus tools at St.Petersburg（Russia）

In this report we intend to discuss a deployment of the Globus toolkits in regional grid structure devoted for LHC physics analysis,One of our peculiarities is poor network connectivity in between two parts of experimental computing nodes,In early stage of deployment we met several technical difficulties due to several bugs and malfunctions.At PNPI the own Certificate Authority(CA) was created.     

HepPDT：encapsulating the Particle Data Table

As a result of discussions within the HEP community,we have written a C package which can be used to maintain a table of particle properties,including decay mode information.The classes allow for multiple tables and accept inpu from a number of standard sources,In addition,They provide a mechanism by which an event generator can employ the tabulated information to actually direct the decay of particles.     

Querying Large Physics Data Sets Over an Information Grid

Optimising use of the Web(WWW) for LHC data analysis is a complex problem and illustrates the challenges arising from the integration of and computation across massive ampunts of information distributed worldwide.Finding the right piece of information can,at times,be extremely time-consuming,if not impossible,SO-called Grids have been proposed to facilitate LHC computing and many groups have embarked on studies of data replication,data migration and netwroking plhilosophies.Other aspects such as the role of moddleware‘ for Grids are emerging as requiring research.This paper positions the need for appropriate middleware that enables users to resolve physics queries across massive data sets.It identifies the role of meta-data for query resolution and the importance of Information Grids for high-energy physics analysis rather than just computational or Data Grids,This paper identifies software that is being implemented at CERN to enable the querying of very large collaborating HEP data-sets,initially being employed for the construction of CMS detectors.     

Quenched Charmed Meson Spectra Using Tadpole Improved Quark Action on Anisotropic Lattices

Charmed meson charmonium spectra are studied with improved quark actions on anisotropic lattices. We measured the pseudo-scalar and vector meson dispersion relations for four lowest lattice momentum modes with quark mass values ranging from the strange quark to charm quark with three different values of gauge coupling β and four different values of bare speed of light v. With the bare speed of light parameter v tuned in a mass-dependent way, we study the mass spectra of D, Ds, ηc, D^＊, D^＊s and J/ψ mesons. The results extrapolated to the continuum limit are compared with the experiment, and a qualitative agreement is found.     

Go4：Multithreaded Inter—Task Communication with ROOT—writing non—blocking GUIs

The future GSI Online-Offline-Object-Oriented analysis framework Go4 based on ROOT[CERN,R.Brun et al] provides a mechanism to monitor and control an analuysis at any time.This is achieved by running the GUI and the analysis in different tasks.To control these tasks by one non-lbocking GUI,the Go4TaskHandler package was developed.It offers an asynchronous inter task communication via independent channels for commands,data,and status information,Each channel is processed by a dedicated thread and has a buffer queue as interface to the working thread.The threads are controlled by the Go4ThreadMAanager package,based on the ROOT TThread package,In parallel to the GUI actions,the analysis tasks can display objects like histograms in the GUI.A test GUI was implemented using the Qt widget library(Trolltech Inc.).A Qt to ROOT interface has been developed.The Go4 packages may be utilized for any ROOT application that requires to control independent data processing or monitoring tasks from a non-blocking GUI.     

反物质在哪里?

高能物理（粒子物理）研究中最引人注目的两个特征是：（１）正反粒子的对等存在;（２）粒子间的相互转化．例如有负电子（ｅ－）,它的反粒子便是正电子（ｅ＋）,它们质量相等,电荷相反,都是稳定的,但碰到一起时,便可能会“湮没”,变为一对光子：ｅ＋＋ｅ－→γ１...     

Neural Computing in High Energy Physics

Artifical neural networks (ANN) are now widely used successfully as tools for hith energy physics.The paper covers two aspects.First,mapping ANNs onto the proposed ring and linear systolic array provides an efficient implementation of VLSI-based architectures since in this case all connections among processing elements are local and regular,Second.it is discussed algorthmic organizing of such structures on the base of modular algebra whose use can provide an essential increase of system throughput.     

An Electronic Logbook for the HEP Control Room

The Control Room Logbook(CRL)is designed to improve and replace the paper logbooks traditionally used in the HEP accelerator control room.Its features benefit the on-line coordinator,the shift operators,and the remote observers,This paper explains some of the most attractive features for each of these roles.The features include the ability to configure the logbook for the specific needs of a collaboration,a large variety of entry types operator can add by simply clicking and dragging,and a flexible web interface for the remote observer to keep up with control room activities.The entries are saved as UTF-8 based XML files,which allowed us to give the data structure and meaning such that it can easily be parsed in the present and far into the future.The XML tag data is also indexed in a relational database,making queries on dates,keyworks,entry type and other criteria feasible and fast .The CRL is used in the D0 control room.This presentation also discusses our experience with deployment,platform independence and other interesting issues that arose with the installation and use of logbook.     

IPv6 in ESnet

The importance of the Internet to modern High Energy Physics Collaborators is clearly immense,and understanding how new developments in network technology impact networks is critical to the future design of experiments.The next generation Internet Protocol(IPv6) is being deployed on testbeds and production networks throughout the world.The protocol has been designed to solve todays internet problems,and many of the features will be core Internet services in the future.In this talk the features of the protocol will be described.Details will be given on the deployment at sites important to High Energy Physics Research and the network services operating at these sites,In particular IPv6 deployment on the U.S.Energy Sciences Network(ESnet)will be reviewed.The connectivity and performance between High Energy Physics Laboratories,Universities and Institutes will be discussed.