BEPC News

Vol.12 No.1
May 8,1999

Beijing Electron—Positron Collider Labortory Institute of High Energy Physics, CAS

BEPC／ BES／ BSRF Upgrading Project Passed Appraisal

    After about five-year teamwork，the Beijing Electron-Positron Collider(BEPC)，Beijing
Spectrometer(BES) and Beijing Synchrotron Radiation Facility(BSRF) upgrading projeet passed
CAS's (the Chinese Academy of Sciences) appraisal in the special meeting held by CAS on
February 7，1999 in the Institute of High Energy Physics(IHEP).
    The upgrading project is aiming at higher performance of BEPC／ BES／ BSRF. The great
efforts made by the scientists and engineers in IHEP have been rewarded by success. The energy
of the injection beam of the linac rises from 1.3GeV to 1.5GeV，while the luminosity of the
collider increases by a factor of two in the J／Ψ region． The upgraded detectors，BES，
performes well both globally and individually. All of 15 improved or new items in BSRF reached
their specifications. The operation of BEPC／ BES／ BSRF bas been showing good performance.
    A committe with 12 specialists，headed by Professor B.W．Wei，made a crosscheck to the
performance of the machine，the detector and the SR facility，and concluded that the target
specifications of the upgrading project had been reached and the project successfully
completed. It is expected that the completion of the BEPC／ BES／ BSRF upgrade will promote
the development of high energy physics research and synchrotron radiation applicadons in
China.
                                                                      (From Zhang Chuang)

Fourth IHEP／ KEK Collaboration Meeting Held in Japan

    The Fourth IHEP／ KEK Collaboration Meeting was held at KEK from March l2 to 13 1999.
    During the meeting，Professor H. Sugawara， Director-general of KEK and Professor Chen
Hesheng，Director of IHEP，China，introduced the current statuts of each own institute. The
participants were greatly inspired by the achievements made both at KEK and IHEP．
    Both sides reviewed satisfactorily the collaborative efforts for the past year and
discussed about the collaborative items proposed by IHEP for next year. As a result of
friendly discussions and consultations, an agreement has been reached for collaboration
between the two institutions， including the items of BELLE experiment，linear collider，
superconducting technology，computer network，synchrotron radition，upgrade of the BEPC，
photoelectron instability experiment and the JSPS／ CAS Asian Acceleratr School．
    Both sides have made a decision to extend the agreement on IHEP／ KEK collaboration signed
on August 2，1994 and the three agenda for another five years.
    As a suggestion of IHEP， both sides agreed to investigate the possibility of referring
the agreement on IHEP／ KEK collaboration to some governmental agreement for easy handling of
import／ export procedures.
    In addition，during his private conversation with Professor Chen Hesheng，Professor
H.Sugawara pledged his support to whatever project IHEP is going to under take in the future．
                                                                      (From Hou Rucheng)

Software for Prevention of Cracker Intrusion

    In the year of 1993，not long aner the first opening of Internet in China by Institute of
Higb Energy Physics(IHEP) of the Chinese Academy of Sciences(CAS)，it was found that a cracker
had broken into a host running VAX OS．The formidable menace to the security of network system
immediately attracted the attentions of the Computing Center.
    In order to prevent the crackers from intruding the computers unlawfully，besides the
enactment of computer user's regulations，IHEP consciously intensified the training of the
system managers，yet several graduate students completed their theses on the topics of topics
networking security.
    In August 1997，the High Technology Bureau of CAS granted fund to support the IHEP Group
to research and develop a software for the prevention of cracker intrusion. The members
carefully studied various behaviours on the intrusion of the crackers，analyzed the updated
preventing technology home and abroad，conjoined their own experiences，accomplished the
pivotal task one year ahead of the time，opened out Software for the Prevention of Cracker Intrusion．
    The software is aimed to design an effective program to eliminate the secmity weak points
existing in the network engineering at present，it mainly consists of a set of testing program
of network security and system security，with providing relevant patching methods and security
suggestions. Among its specific functions are: network security test，system security test，
Web server security test，security hole test，security hole patching and security monitoring.
    In August 1998，CAS held a meeting for certificating the Software for the Prevention of
Cracker Instrusion，the experts unitedly considered”the software system is a better practical
one，with the design reasonable，the technology advanced，the function perfect，all the
modules isolated，related and cooperated together.”
    In November 1998, the certification to sell the softtware in market was granted for the
first time by the Ministry of Public Security of P.R.C.
    At present day， this software has already created remarkable social and economic effcts.
In the meantime，the group is unremettingly struggling to upgrade the software for the sake
of facing the new challenge.
                                                                    (From Xu Rongsheng)

    BEPC News is published by the Library of       Chief editor: Chen Hesheng
Institute of High Energy Physics, Academia         Vice chief editor: Li Weiguo, Zhang Chuang Sinica. Comments and suggestions should be                                       Yan Yonglian
sent to the editor Zhu Aimin, P.O.Box Beijing,     Editor: Zhu Aimin (Tel: (010)68235913)
the People's Republic of China.                    Email: zhuam@sun.ihep.ac.cn