Author: Seol, K.T.
Paper Title Page
TU1A05 Status and Commissioning Plan of the PEFP 100-MeV Linear Accelerator 422
 
  • H.-J. Kwon, Y.-S. Cho, J.-H. Jang, D.I. Kim, H.S. Kim, B.-S. Park, J.Y. Ryu, K.T. Seol, Y.-G. Song, S.P. Yun
    KAERI, Daejon, Republic of Korea
 
  Funding: Works supported by the Ministry of Education, Science and Technology of Korean Government.
One of the goals of the Proton Engineering Frontier Project (PEFP) is to develop a 100 MeV proton linear accelerator, which consists of 50 keV proton injector, 3 MeV radio frequency quadrupole (RFQ), 20 MeV/100 MeV drift tube linac (DTL) and 20 MeV/100 MeV beam lines. The 100 MeV linear accelerator and beam line components have been installed in the tunnel and experimental hall. After the completion of the utility commissioning, the commissioning of the accelerator starts with a goal of the beam delivery to the 100 MeV target room located at the end of the beam line in 2012. In this paper, the status and commissioning plan of the PEFP 100 MeV linear accelerator are presented.
 
slides icon Slides TU1A05 [6.795 MB]  
 
THPB022 Beam Phase Measurement for PEFP Linear Accelerator 894
 
  • H.S. Kim, Y.-S. Cho, J.-H. Jang, H.-J. Kwon, J.Y. Ryu, K.T. Seol, Y.-G. Song
    KAERI, Daejon, Republic of Korea
 
  Funding: Works supported by the Ministry of Education, Science and Technology of Korean Government.
According to the commissioning plan of the PEFP proton linac, an accurate measurement of beam phase is essential, especially for setting up the RF operating parameters of DTL. Beam position monitors (BPMs) installed between DTL tanks can provide information about the beam phase as well as about the beam transverse position. By using a BPM as a beam phase monitor, beam phase can be measured without additional devices on the linac or the beam line. The signals from 4 electrodes in the BPM can be summed by using a 4-way RF combiner, by which the effect of the transverse beam offset on the phase measurement can be eliminated. The combined BPM signal (350 MHz) is mixed with LO signal (300 MHz) and down-converted to IF signal (50 MHz), then fed into the signal processing unit, where the phase information is extracted by using IQ demodulation method with a sampling frequency of 40 MHz. In this paper, the beam phase measurement system and signal processing scheme will be presented.