Author: Kang, X.C.
Paper Title Page
TUPA13
 Design Status of Beam Position Monitors for ADS Injector II Proton LINAC  
 
  • Y. Zhang, X.C. Kang, M. Li, J.X. Wu, J. Zhang
    IMP, Lanzhou, People's Republic of China
  
  Beam Position Monitors (BPM) based on capacitive pick-ups are designed for Accelerator-Driven System (ADS) Injector II proton LINAC. This LINAC is aiming to produce a maximum design current of 15 mA at the 10 MeV energy with an operating frequency of 162.5 MHz. Non-interceptive BPM will be installed to measure the transverse beam position and beam phase in the vacuum chamber. Depending on the location, the response of the BPMs must be optimized for a beam with an energy range from 2.1 up to 10 MeV and an average current between 0.01 and 15 mA. Apart from the broadening of the electromagnetic field due to the low-beta beam, specific issues are affecting some of the BPMs: tiny space in the transport line between the RFQ and the cryomodule and the cryogenic temperature inside the cryomodule. For this reason two types of BPMs are being designed for each location (MEBT and cryomoudle). In this contribution, the present status of the design of each BPM will be presented, focusing on the electromagnetic response for low-beta beams.  
 
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;