北京正负电子对撞机工程现状

本文简要介绍了最近半年多来BEPC工程进展情况,对撞机主体部份有关的土建大部接近竣工,1.4GeV直线加速器的安装已完成70%以上。前端250兆电子伏区段已经进入调试阶段,并得到了正电子束,贮存环90%以上的非标设备均已完成,除高频腔尚需抓紧研制外,其余的均在进行单部件测试。输运线已于本月初全部安装完毕。环形部份的安装已开始,自控系统的主要部份已在实验室内建立,并发展了一套电源控制系统的软件,闭轨测量显示系统也正在调试,束测系统的部份探头已进入安装。

THE CURRET STATUS OF BEPC

The progress of BEPC in thc past 8 month is described. The main civilengineering construction of the collider machine will soon be finished. Nearly70% of the components of the linac have been installed in the tunnel. Its first 8sections with an energy of 250 MeV have commissioned. A positron beam with anencrgy 100 MeV and a curreent intensity of 2.5 mA were obtained. Except theceramic window of the Rf cavity which is still in R & D stage, more than 90%non-standard components have been delievered to our institate. Testing is under-way. The installation of transport line was completed at the beginning of June,and the installation of the ring has startcd just now. The main parts of the con-trol system were established in our 1ab. The synchronous RAMP simulation wascompleted. The beam position monitor software is being debugged.