Author: Wang, S.Z.
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MOPMB033 The Influence of Strip-line BPMs' Measuring Results Made by Edge of the Ultra-relativistic Electron Beam 161
 
  • S.Z. Wang, N. Gan, X. Huang
    IHEP, Beijing, People's Republic of China
 
  This paper describes the impact on the measuring results of the stripline beam position monitor (BPM) produced by the edge of the ultra-relativistic electron beam when we take the transverse size of the beam into account. Simulations have been made by using the Wakefield Solver of CST Particle Studio. And the result of this influence at different ratio of beam horizontal width σ and the BPM inner diameter a has been obtained. This kind of influence has been observed in the stripline BPMs in the transfer line of Beijing Positron Electron Colliders upgraded version II (BEPCII). The research is useful when we design the inner diameter of the stripline BPMs for ultra-relativistic electron beam, meanwhile it provides reference to distinguish the invalid ones from the measuring results obtained by the stripline BPMs in the ultra-relativistic situation.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMB033  
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WEPOR036 Design and Commissioning of LLRF System for ADS Project in China 2752
 
  • R.L. Liu, Y.L. Chi, N. Gan, X. Huang, N. Liu, X. Ma, Z.H. Mi, G.W. Wang, Q.Y. Wang, S.Z. Wang, Z.S. Zhou
    IHEP, Beijing, People's Republic of China
  • H.Y. Lin
    Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China
 
  This article describes a low-level RF control system for the ADS project at IHEP, which includes control units for an RFQ, 2 Bunchers and 14 spoke superconducting cavities with the reference line distribution. The paper covers system design consideration and implementation for those units. we will also presented some experience and results for the last one year operation of these LLRF systems.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOR036  
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