| Paper |
Title |
Other Keywords |
Page |
| MOP041 |
Test Results of the PEFP 20-MeV Proton Accelerator
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rfq, proton, klystron, site |
133 |
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- H.-J. Kwon, Y.-S. Cho, H. M. Choi, I.-S. Hong, J.-H. Jang, H. S. Kim, Y.-H. Kim, K. T. Seol, Y.-G. Song
KAERI, Daejon
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A 20 MeV proton accelerator has been developed by Proton Engineering Frontier Project (PEFP). The accelerator consists of a 50 keV proton injector, a 3 MeV radio frequency quadrupole (RFQ) and a 20 MeV DTL (Drift Tube Linac). The preliminary test is being performed at KAERI (Korea Atomic Energy Research Institute) site. A pulsed proton beam is extracted from the proton injector by switching the high voltage power supply of the ion source. The beam transmission rate through the RFQ was measured with respect to the vane voltage to set the operating point. The 20 MeV DTL consists of four tanks and the beam transmission characteristics have been checked for various parameters. In this paper, a test stand for a 20 MeV accelerator at KAERI site is introduced and the test results are discussed.
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| TU2003 |
China Spallation Neutron Source Linac Design
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linac, rfq, ion, ion-source |
222 |
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- S. Fu, S. X. Fang
IHEP Beijing, Beijing
- J. Wei
BNL, Upton, Long Island, New York
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Beijing Spallation Neutron Source has been approved in principle by the Chinese government. BSNS can provide a beam power of 100kW on the target in the first phase, and then 200kW in the second phase. The accelerator complex of BSNS consists of an H- linac of 81MeV and a rapid cycling synchrotron of 1.6GeV at 25Hz repetition rate. In the second phase, the linac energy will be upgraded to 134MeV and the average current will be doubled. The linac has been designed, and some R&D studies have been lunched under the support from Chinese Academy of Sciences. The linac comprises a H- ion source, an RFQ and a conventional DTL with EMQs. This paper will present our major design results and some progresses in the R&D of the linac.
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| TUP030 |
RF Cavity Performance and RF Infrastructure for the ISAC-II Superconducting Linac
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linac, controls, coupling, acceleration |
309 |
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| WE2004 |
100 MeV High-Duty-Factor Proton Linac Development at KAERI
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proton, klystron, rfq, linac |
501 |
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- Y.-S. Cho, H. M. Choi, I.-S. Hong, J.-H. Jang, H. S. Kim, K. Y. Kim, Y.-H. Kim, H.-J. Kwon, K. T. Seol, Y.-G. Song
KAERI, Daejon
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The Proton Engineering Frontier Project (PEFP) is developing a 100 MeV high-duty-factor proton linac, which consists of a 50 keV proton injector, a 3 MeV radio frequency quadrupole, a 20 MeV drift tube linac, a 20 MeV beam transport line, a 100 MeV drift tube linac, and a 100 MeV beam transport line. It will supply proton beams of 20 MeV and 100 MeV to users for proton beam applications with the beam duty factor of 24% and 8% respectively. The 20 MeV front-end accelerator with CW RF systems had been constructed at KAERI test stand, and the rest part of the accelerator is being fabricated and will be installed in the new site at Gyeongju City. The preliminary results of the 20 MeV proton linac and the status of the 100 MeV proton linac will be presented.
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| THP017 |
Magnet Hysteresis Control at LANSCE
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quadrupole, linac, controls, acceleration |
601 |
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- R. C. McCrady, R. Keller
LANL, Los Alamos, New Mexico
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We have investigated the effects of magnet hysteresis in various beamlines at LANSCE (Los Alamos Neutron Science Center) and have developed procedures to control the effects. Particular challenges are presented by sets of magnets with parallel boosting and bucking windings on the same yoke powered by two families of supplies and by magnets whose fields are routinely reversed for different operating modes. The results of the procedures are more rapid recovery from power-off conditions and rapid switching between operating modes, with minimized re-tuning. The latter improvement has been beneficial in controlling a beam instability that has adverse effects on the users’ experiments.
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| THP023 |
Status of and Future Plan for the NSRL Microwave Power System
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linac, klystron, controls, radiation |
616 |
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- L. Shang
USTC/NSRL, Hefei, Anhui
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In this paper, 20MW microwave power system for NSRL (National synchrotron radiation Laboratory) Linac is introduced. The power system includes five s-band 20MW klystrons and their modulators. In 2002, the klystron modulators and the control system were upgraded. Constant-current, switching power supplies were employed to replace the old conventional LC resonant charging facilities. The new system has run for four years and played an important role in the operation of the 200MeV LINAC. A new soft x-ray FEL project (HTF) is now proposed in NSRL, the energy of electron beam will be increase from 200MeV to 800MeV. Seven s-band 80 MW klystrons and modulators will be employed as the new microwave power sources. The low energy spread specification of the Linac sets a stringent requirement to the stability of the klystron modulators. The paper also presents the technical considerations and preliminary design of the new system
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| THP028 |
Master Oscillator for Fermilab ILC Test Accelerator
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controls, simulation, resonance, linear-collider |
631 |
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- J. Branlard, B. Chase, E. Cullerton
Fermilab, Batavia, Illinois
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The low phase-noise master oscillator generates and distributes the various frequencies required for the LLRF system controlling ILCTA cavities. Two chassis have been developed for this design, generating the programmable frequencies and performing the distribution and amplification, respectively. It has been successfully used with the SNS and the DESY-SIMCON LLRF systems, driving two different superconducting cavities. The design approach and a full characterization of the master oscillator are presented in this paper. The measurement results include the frequency stability and the phase and amplitude noise spectrums of the multiple frequency outputs.
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| THP041 |
400-kW RF Amplifier for a 201.5-MHz Deuteron RFQ Accelerator
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rfq, linac, proton, klystron |
670 |
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