Author: Kim, D.I.
Paper Title Page
MOPC031 Performance of a 13 MHz Cavity for an RF Implanter at PEFP* 136
  • T.A. Trinh
    UST, Daejeon, Republic of Korea
  • Y.-S. Cho, J.-H. Jang, D.I. Kim, H.S. Kim, H.-J. Kwon, B.-S. Park, K.T. Seol
    KAERI, Daejon, Republic of Korea
  Funding: This work is supported by the Ministry of Education, Science and Technology of the Korean Government
A 13 MHz - normal conducting cavity for an rf implanter has been successfully developed at PEFP (Proton Engineering Frontier Project). It consists of an inductive coil, accelerating electrodes and a ground electrode for the inductor. Quality factor of 2074 and critical coupling were achieved at resonant frequency of 12.658 MHz. Rf power of 1 kW was forwarded to the cavity without any spark in the cavity. Beam test was then carried out with a 27 keV helium beam generated from a Duoplasmatron ion source. The results showed that the helium beam was accelerated to final energy of 120 keV with energy spread of 1%. Detail experiments and results are addressed in this presentation.
WEPS100 Status of 100-MeV Proton Linac Development for PEFP 2742
  • Y.-S. Cho, S. Cha, I.-S. Hong, J.-H. Jang, D.I. Kim, H.S. Kim, H.-J. Kwon, K. Min, B.-S. Park, J.Y. Ryu, K.T. Seol, Y.-G. Song, S.P. Yun
    KAERI, Daejon, Republic of Korea
  • J.S. Hong
    KAPRA, Cheorwon, Republic of Korea
  Funding: This wok was supported through the Proton Engineering Frontier Project by the Ministry of Education, Science and Technology of Korea.
The Proton Engineering Frontier Project (PEFP) is developing a 100-MeV high-duty-factor proton linac, which consists of a 50-keV microwave ion source, a 3-MeV radio frequency quadrupole, a 100-MeV drift tube linac, a 20-MeV beam transport line, and a 100-MeV beam transport line. It will supply proton beams of 20-MeV and 100-MeV with peak current of 20 mA to users for proton beam applications. The beam duty factor will be 24% and 8% respectively. The 20-MeV front-end accelerator has been installed and operated at the KAERI Daejeon test stand for user service, and the rest part of the accelerator has been fabricated and will be installed at the new site of Gyeongju City in 2011. The detailed status of the 100-MeV proton linac will be presented.
THPO008 Klystron and Modulator System for the PEFP 20 MeV Proton Linac 3352
  • D.I. Kim, Y.-S. Cho, H.S. Kim, H.-J. Kwon
    KAERI, Daejon, Republic of Korea
  Funding: This work is supported by the Ministry of Science and Technology of the Korean government.
A modulator developed for the 100 MeV proton linear accelerator is operating in the 20 MeV proton linac. The voltage and current of the modulator are -105 kV, 50 A with 1.5 ms pulse width, 60 Hz repetition rate. The modulator drives two klystrons simultaneously, one for the RFQ, the other for the DTL. The typical operation parameters of the modulator are 85 kV of the peak voltage, 34 A of the peak current, 1 ms of the pulse width, 4 Hz of the pulse repetition. The specifications of the klystron are 350 MHz of the frequency, 1.1 MW of the maximum average RF power, less than 95 kV of the beam voltage, triode type electron gun with mod-anode. The mod-anode voltage was supplied by the voltage dividing resistors which were located inside the klystron oil tank. In this paper, the operation performance of the klystron and modulator system for the PEFP 20 MeV proton linac is presented.
THPS022 Improvement of the 20 MeV Proton Accelerator at KAERI 3466
  • H.-J. Kwon, Y.-S. Cho, J.-H. Jang, D.I. Kim, H.S. Kim, K.T. Seol, Y.-G. Song
    KAERI, Daejon, Republic of Korea
  Funding: This work is supported by the Ministry of Science and Technology of the Korean government.
The 20 MeV proton accelerator has been operating since 2007 when it got a operational license at Korea Atomic Energy Research Institute (KAERI) by Proton Engineering Frontier Project (PEFP). A microwave ion source was newly developed to satisfy the requirement of minimum 100 hour operation time without maintenance. After the long time operation test at test bench, it was installed to drive the 20 MeV proton accelerator. The beam profile and emittance were measured to check the characteristics of the accelerator both at the LEBT and at the end of the 20 MeV DTL. In this paper, the microwave ion source is presented and the measurement results of the beam property are discussed.