Author: Cao, J.
Paper Title Page
MOPB64
 Emittance Measurement for BEPCII Linac  
 
  • Y.F. Sui, J. Cao
    IHEP, Beijing, People's Republic of China
  
  BEPCII is an upgrading project of the Beijing Electron-Positron Collider. Recent efforts have been focussed on improving beam transmission between linac and storage ring. Emittance measurements using four wire scanners. The result of measurement and some discussion will be presented.  
 
MOPB74
 Beam Measurement with Synchrotron Radiation for BEPCII Storage Ring  
 
  • L. Wang, J. Cao, Z. Zhao
    IHEP, Beijing, People's Republic of China
  
  The detail of Synchrotron Light Monitor for BEPCII storage ring is introduced. The Synchrotron Light Monitor measures both transverse beam profiles and longitudinal bunch length. Transverse profiles are measured by visible light imaging and spatial interferometer, and longitudinal bunch length is measured by streak cemera and intensity interferometer.  
 
TUPB82
 Development of Laser Wire System in the Electron Beam Transport Line of BEPCⅡ  
 
  • C. Zhang, J. Cao, Q.Y. Deng, Y.F. Sui
    IHEP, Beijing, People's Republic of China
  
  Funding: National Natural Science Foundation of China
A Laser Wire system is under development in the electron beam transport line of BEPCⅡ (Beijing Electron Positron Collider Ⅱ). The whole system will be installed in the tunnel of beam transport line in this summer shutdown of the BEPCII. We present recent work on subsystems of Laser Wire in this paper, such as improvement of laser system and construction of gamma detector. Some measurement and test results are also showed. The electron beam profile measurement experiment with Laser Wire will start in the next accelerator run. 		 
 
TUPB86
 An Upgrade for the Bunch Current Measurement System of BEPCⅡ  
 
  • Q.Y. Deng, J. Cao, L. Wang, Q. Ye, J. Yue
    IHEP, Beijing, People's Republic of China
  
  Recently, the BCM (Bunch Current Measurement) system is being developed at BEPCⅡ(Beijing Electron-Positron ColliderⅡ). In order to solve the instability problems which frequently happen in the existing system, we have upgraded the DAQ system with new ADC card and new DSP arithmetic in FPGA. In addition, some discussion for the upgrade such as the generality of the arithmetic, easy to change operation mode, noise reduction measurements, and so on, are also presented in this paper.