Author: Li, P.
Paper Title Page
TUPA04
 Wire-scanner Readout for the CSNS Front-end  
 
  • F. Li, L.X. Han, P. Li, J.L. Sun, A.X. Wang, T.G. Xu
    IHEP, Beijing, People's Republic of China
  
  The linac wire scanner system (WS) for the China Spallation Neutron Source (CSNS) calls for 4 units in the Medium Energy Beam Transport (MEBT), which will be used in beam profile measurements. In this paper we designed a readout system based on EPICS of WS, including the readout of wire position information and the beam profile information through ADC, and the selection of different Electronics range，Broken wire detection through DIO（Digital Input Output）signal.  
 
TUPB62
 Transverse Emittance Measurement using Slit-Grid  
 
  • M. Li, P. Li, R.S. Mao, J.X. Wu, J. Zhang, Y. Zhang, T.C. Zhao
    IMP, Lanzhou, People's Republic of China
  
  There are several ways to measure the beam transverse emittance. In this paper, the slit-grid emittance measurement device was proposed. The slit-grid is a one dimensional emittance measurement device. During the measurement, the slit, driven by the stepper motor is moved stepwise across the beam, and then the signal induced on the grid will be stored in the computer for further analysis. Because slit-grid is one dimensional device, two sets of this device are needed for transverse measurement. In this paper, we introduce the design, parameters, data acquisition and analysis for this measurement. Especially the software integration is given in this paper. The software development for emittance front-end control and data analysis is based on the labview language. The slit-grid device was tested at the 320kV high voltage platform in Lanzhou. The tested results were also presented in this paper.
beam transverse emittance,slit-grid 		 
 
TUPB67
 Test Measurements of Beam Profile Monitor at HIRFL-RIBLL2  
 
  • T.C. Zhao, Y.C. Feng, X.C. Kang, H.L. Li, M. Li, P. Li, R.S. Mao, Q. She, H. Su, J.W. Xia, G.Q. Xiao, Y.J. Yuan, W.N. ma, Z.G. xu
    IMP, Lanzhou, People's Republic of China
  
  The beam intensity supplied by HIRF-CSR has a wide range, high-intensity primary beams and low intensity fragment-beams in connection with the slow extraction and the fast beam-extraction from the synchrotron CSRm. The detector (CG) has been developed for the beam profile monitoring at radioactive beam line HIRFL-CSR. The front-end electronics are based on CPLD controlled sample-and-hold circuits and multiplexer. Remote control is used to tune the detector sensitivity by setting the gas pressure in the detector's cell, the bias voltage of the anode and the integration time. The test measurements results are presented in this paper. Keywords: beam profile monitor; current grids; multiplexer; HIRFL CSR;