TAILIEUCHUNG - Srf linac for future extension of the pefp

A study on the superconducting RF linac is underway in order to increase the beam energy up to 1 GeV by extending the Proton Engineering Frontier Project (PEFP) 100-MeV linac. The operating frequency of the PEFP superconducting linac (SCL) is 700 MHz, which is determined by the fact that the frequency of the existing normal conducting linac is 350 MHz. | http SRF LINAC FOR FUTURE EXTENSION OF THE PEFP HAN-SUNG KIM HYEOK-JUNG KWON KYUNG-TAE SEOL JI-HO JANG and YONG-SUB CHO Proton Engineering Frontier Project Korea Atomic Energy Research Institute Daejeon 305-353 Corresponding author. E-mail kimhs@ Received October 22 2012 Accepted for Publication September 21 2013 A study on the superconducting RF linac is underway in order to increase the beam energy up to 1 GeV by extending the Proton Engineering Frontier Project PEFP 100-MeV linac. The operating frequency of the PEFP superconducting linac SCL is 700 MHz which is determined by the fact that the frequency of the existing normal conducting linac is 350 MHz. A preliminary study on the beam dynamics showed that two types of cavities with geometrical betas of and could cover the entire energy range from 100 MeV to 1 GeV. An inductive output tube IOT based RF system is under consideration as a high-power RF source for the SCL due to its low operating voltage and high efficiency. As a prototyping activity for a reduced beta cavity a five-cell cavity with a geometrical beta of was designed and fabricated. A vertical test of the prototype cavity at low temperatures was performed to check the performance of the cavity. The design study and the prototyping activity for the PEFP SCL will be presented in this paper. KEYWORDS RF Superconductivity Linac Proton 1. INTRODUCTION The Proton Engineering Frontier Project PEFP has been developing a 100-MeV proton linac which is mainly composed of a 50-keV proton injector a 3-MeV radiofrequency quadrupole RFQ and a 100-MeV drift tube linac DTL . For the future extension of the linac a superconducting accelerating structure is under consideration due to its operational flexibility and or low beam loss as well as its high accelerating performance and relatively short linac length 1 2 . The final energy of the extended linac is 1 GeV. The basic parameters of the PEFP .

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• Srf linac for future extension of the pefp
• The Proton Engineering Frontier Project
• Inductive output tube
• Five cell cavity with a geometrical beta