Design and Upgrading of HLS Linac Modulators

SHANG Lei; LUO Xue-Fang; WANG Wei; HONG Jun; LU Ye-Ming; ZHANG Yi; ZHAO Feng

Chinese Physics C> 2003, Vol. 27> Issue(12) : 1133-1137

Design and Upgrading of HLS Linac Modulators

National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230029,China

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Abstract：
The upgrading project of the HLS (Hefei Light Source) klystron modulators was firstly introduced. Constant-current, switch-mode,PFN charging power supplies were adopted in the new design. Charging parameters were calculated. Simulation model of main discharging circuit was established. An emphasis of analysis was put on the reversal voltage problem. A protection circuit was designed based on the simulation results and reversal voltage study. Major waveforms measured from daily operation were presented. Finally new control system of the modulators was described.

References

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. ZHAO Gen-Shen,SUN Ting-Heng,LUO Xue-Fang et al.Journal of Uni versity of Science and Technology of China,1982,12(2):128—132(in Chinese)(赵根深,孙廷恒,罗雪芳等.中国科学技术大学学报,1982,12(2):128—132) 2. Neal R B ,Dupen D Q ,Hogg H A et al.Stanford Two-mile Accelerator.New York:W .A .Benjamin INC .,1968,411—462 3. LI Wei-Min,LI Jing-Yi,LIU Gong-Fa.The Control System of HLS .In:Lucas P ,Webber S ed.Proceedings of the 2001 Particle Accelerator Con ference,Volume 2.Piscataway NJ USA :IEEE ,2001.809—8104. Lippincott A C ,Nelms R M .IEEE Transactions on Industrial Electronics,1991,38(6),438—447 5. SHANG Lei,WANG Xiang-Qi,PEI Yuan-Ji et al.High Power Laser and Particle Beams,2001,10(1),103—107(in Chinese)(尚雷,王相綦,裴元吉等.强激光与粒子束,2001,10(1),103—107

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SHANG Lei, LUO Xue-Fang, WANG Wei, HONG Jun, LU Ye-Ming, ZHANG Yi and ZHAO Feng. Design and Upgrading of HLS Linac Modulators[J]. Chinese Physics C, 2003, 27(12): 1133-1137.

SHANG Lei, LUO Xue-Fang, WANG Wei, HONG Jun, LU Ye-Ming, ZHANG Yi and ZHAO Feng. Design and Upgrading of HLS Linac Modulators[J]. Chinese Physics C, 2003, 27(12): 1133-1137. shu

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Received: 2003-04-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Design and Upgrading of HLS Linac Modulators

Corresponding author: SHANG Lei,

National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230029,China

Received Date: 2003-04-01
Accepted Date: 1900-01-01
Available Online: 2003-12-05

Abstract: The upgrading project of the HLS (Hefei Light Source) klystron modulators was firstly introduced. Constant-current, switch-mode,PFN charging power supplies were adopted in the new design. Charging parameters were calculated. Simulation model of main discharging circuit was established. An emphasis of analysis was put on the reversal voltage problem. A protection circuit was designed based on the simulation results and reversal voltage study. Major waveforms measured from daily operation were presented. Finally new control system of the modulators was described.