CERN Accelerating science

Article
Title	Test Scheme Setup for the PEFP 20MeV DTL
Author(s)	Kim, Han-Sung ; Cho, Yong-Sub ; Hwang, Yong-Suk ; Kim, Yong-Hwan ; Kwon, Hyeok-Jung ; Tae Seol, Kyung
Affiliation	(KAERI, Daejon) ; (SNU, Seoul)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2965
Subject category	Accelerators and Storage Rings
Abstract	A 100MeV proton accelerator is under development for the Proton Engineering Frontier Project (PEFP). The goal of the first stage of the project is to develop a 20MeV accelerator and the initial test of the 20MeV accelerator will be made. The DTL of 20 MeV accelerator consists of four tanks and will be driven with single klystron, which gives rise to some unique problems with regard to the way of independent resonance control for each tank. Some changes made in the LLRF for reducing phase or amplitude error of cavities affect all of four tanks simultaneously, for which it is not possible to use LLRF for individual control of phase and amplitude of each tank. For independent control of each tank, we are going to use the temperature control of the drift tubes as a frequency tuner. During the initial test of the DTL, the phase of each tank will be synchronized with the first tank phase, and beam based test will be performed as if all of tanks were single unit. The detailed description of the test scheme and the analysis results will be given in this paper.