Electronics System Of BESIII Luminosity Monitor

High energy physics is to explore the basic structure of the material composition, nature and the interactions between them in the forefront of disciplines, and its research needs through many means, one of which is like "microscopes" to the same collision.Beijing Electron-Positron Collider(BEPC), 10 years ago, has scored brilliant achievements in the field of possession of a high-tech international.In recent years, the continued development of China's scientific and technological strength, the level of domestic technological and industrial has increased significantly; More than twenty years of the construction, operation on Beijing Spectrometer(BES), has accumulated rich experience;Basis on these, made a major transformation project for BEPC -BESIII detectors.BESIII luminosity monitoring system is one of the major subsystems of BESIII detectors. BESIII luminosity monitoring system is divided into particle detectors and monitoring electronics systems.The main task of this paper is to systematic study and design an electronics systems for BESIII luminosity monitoring system.BESIII luminosity monitoring electronics system and the contents of this study include the following major tasks:The front-end electronics: BESIII needs to test luminosity signals with less than 4ns pulse width, so the front-end electronics system must have a sufficiently high bandwidth.Meanwhile,the front-end electronics systems installs in the environmental impacting of a strong electromagnetic radiation near Central,and the counting & control systems is installed in the control room few dozen extra meters. These require the front-end electronics systems with remote transmission & strong anti-interference capability. BESIII luminosity monitoring electronics system is designed with 300MHz bandwidth, and signal transmission distance of 30 metres.High-speed logic ECL design: ECL digital IC is the fastest practical circuits. To...