IPAC2012 - List of Authors (Cha, S.)

Paper	Title	Page
THPPP043	Installation of 100-MeV Proton Linac for PEFP	3832
	Y.-S. Cho, S. Cha, J.S. Hong, J.-H. Jang, D.I. Kim, H.S. Kim, H.-J. Kwon, B.-S. Park, J.Y. Ryu, K.T. Seol, Y.-G. Song, S.P. Yun KAERI, Daejon, Republic of Korea
	Funding: This work was supported by the Ministry of Education, Science and Technology of the Korean Government. The Proton Engineering Frontier Project (PEFP) at Korea Atomic Energy Research Institute (KAERI) is developing a 100-MeV proton linac in order to supply 20-MeV and 100-MeV proton beams to users for proton beam application. The linac consists of a 50-keV injector, a 3-MeV radio frequency quadrupole (RFQ) and a 100-MeV drift tube linac (DTL). The operation of the 20-MeV part of linac at Daejeon site was finished on November 2011. It was disassembled and moved to the Gyeongju site for installation as a low energy part of the linac. We completed the fabrication and test of the accelerating structures. The installation of the proton linac started in December 2011 at the new project site. The user service is scheduled for 2013 through the beam commissioning in 2012. This work summarized the installation status of the proton linac.

THPPR005	The Preliminary Test of a Digital Control System Based on the FPGA for a PEFP 120-keV RF Cavity	3975
	Y.M. Li, S. Cha UST, Daejeon City, Republic of Korea Y.-S. Cho, J.-H. Jang, H.S. Kim, H.-J. Kwon, Y.M. Li, K.T. Seol, Y.-G. Song KAERI, Daejon, Republic of Korea
	Funding: Proton Engineering Frontier Project, Korea Atomic Energy Research Institute, Ministry of Education, Science and Technology of the Republic of Korea. PEFP developed a 120-keV RF cavity for their ion implantation applications. Due to ambient disturbances, the cavity’s resonance frequency may vary in long-term test. We designed a digital control system to change the frequency of the RF sources for tracking the cavity’s frequency variations. The digital control system has functions such as, phase shift, phase comparison, proportional-integral compensation, waveform generation and frequency/pulse modulation, and driving signal generator. Most of them are implemented digitally in a Virtex II 4000 Field Programmable Gate Array (FPGA). In this research we show the design and the preliminary test results of the digital control system. * Work supported by the Ministry of Science and Technology

Paper

Title

Page

Installation of 100-MeV Proton Linac for PEFP

3832

Y.-S. Cho, S. Cha, J.S. Hong, J.-H. Jang, D.I. Kim, H.S. Kim, H.-J. Kwon, B.-S. Park, J.Y. Ryu, K.T. Seol, Y.-G. Song, S.P. Yun
KAERI, Daejon, Republic of Korea

Funding: This work was supported by the Ministry of Education, Science and Technology of the Korean Government.
The Proton Engineering Frontier Project (PEFP) at Korea Atomic Energy Research Institute (KAERI) is developing a 100-MeV proton linac in order to supply 20-MeV and 100-MeV proton beams to users for proton beam application. The linac consists of a 50-keV injector, a 3-MeV radio frequency quadrupole (RFQ) and a 100-MeV drift tube linac (DTL). The operation of the 20-MeV part of linac at Daejeon site was finished on November 2011. It was disassembled and moved to the Gyeongju site for installation as a low energy part of the linac. We completed the fabrication and test of the accelerating structures. The installation of the proton linac started in December 2011 at the new project site. The user service is scheduled for 2013 through the beam commissioning in 2012. This work summarized the installation status of the proton linac.

THPPR005

The Preliminary Test of a Digital Control System Based on the FPGA for a PEFP 120-keV RF Cavity

3975

Y.M. Li, S. Cha
UST, Daejeon City, Republic of Korea
Y.-S. Cho, J.-H. Jang, H.S. Kim, H.-J. Kwon, Y.M. Li, K.T. Seol, Y.-G. Song
KAERI, Daejon, Republic of Korea

Funding: Proton Engineering Frontier Project, Korea Atomic Energy Research Institute, Ministry of Education, Science and Technology of the Republic of Korea.
PEFP developed a 120-keV RF cavity for their ion implantation applications. Due to ambient disturbances, the cavity’s resonance frequency may vary in long-term test. We designed a digital control system to change the frequency of the RF sources for tracking the cavity’s frequency variations. The digital control system has functions such as, phase shift, phase comparison, proportional-integral compensation, waveform generation and frequency/pulse modulation, and driving signal generator. Most of them are implemented digitally in a Virtex II 4000 Field Programmable Gate Array (FPGA). In this research we show the design and the preliminary test results of the digital control system.
* Work supported by the Ministry of Science and Technology