HEPS在轴注入冲击器系统及快脉冲电源样机研制
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摘要
高能同步辐射光源(HEPS)是我国计划建造的下一代基于储存环的高亮度光源,束流自然发射度已经接近衍射极限。作为典型的低发射度储存环(LER),HEPS的动力学孔径远小于物理孔径,传统的离轴累积注入已经无法满足要求,只能采用基于strip-line kicker的在轴注入方案。为了实现逐束团操控,HEPS要求注入kicker脉冲电源底宽(3%～3%)<10ns,半高宽(50%～50%)>4.5ns,幅度>±17.5kV(50Ω负载),重复频率>50Hz。高能同步辐射光源验证装置(HEPS-TF)工程研制了一台基于DSRD的双极性快脉冲电源性能样机,在50Ω负载上可以获得上升时间(10%～90%)<2.6ns,下降时间(90%～10%)<3.2ns,半高宽(50%～50%)>5ns,底宽(3%～3%)<10ns,幅度>±18kV的脉冲高压,可以满足HEPS注入基准方案——在轴置换注入的要求。
High Energy Photon Source(HEPS)is the next generation of high-brightness photon source based on storage ring planned in China.Its natural emittance of the beam is close to the diffraction limit.As a typical low emittance storage ring(LER),the dynamic aperture of HEPS is far smaller than the physical aperture.Hence the traditional off-axis cumulative injection can not meet the requirements,and only strip-line kicker based on in-line injection scheme can be used.In order to realize bunch-by-bunch control,HEPS requires injecting kicker electrical pulse with a bottom width(3%-3%)of less than 10 ns,a half width(50%-50%)of more than 4.5 ns,an amplitude of>+17.5 kV(50Ωload)and a repetition frequency of more than 50 Hz.A prototype of bipolar fast pulsed power supply based on DSRD has been developed on the project of HEPS-TF.The performance of the prototype can produce a pulse at 50Ωload with rise time(10%-90%)<2.6 ns,fall time(90%-10%)< 3.2 ns,FWHM(50%-50%)>5 ns,bottom width(3%-3%)<10 ns,amplitude>18 kV.It can meet the requirement of on-axis swap-out injection which is the baseline injection scheme of HEPS.
High Energy Photon Source(HEPS)is the next generation of high-brightness photon source based on storage ring planned in China.Its natural emittance of the beam is close to the diffraction limit.As a typical low emittance storage ring(LER),the dynamic aperture of HEPS is far smaller than the physical aperture.Hence the traditional off-axis cumulative injection can not meet the requirements,and only strip-line kicker based on in-line injection scheme can be used.In order to realize bunch-by-bunch control,HEPS requires injecting kicker electrical pulse with a bottom width(3%-3%)of less than 10 ns,a half width(50%-50%)of more than 4.5 ns,an amplitude of>+17.5 kV(50Ωload)and a repetition frequency of more than 50 Hz.A prototype of bipolar fast pulsed power supply based on DSRD has been developed on the project of HEPS-TF.The performance of the prototype can produce a pulse at 50Ωload with rise time(10%-90%)<2.6 ns,fall time(90%-10%)< 3.2 ns,FWHM(50%-50%)>5 ns,bottom width(3%-3%)<10 ns,amplitude>18 kV.It can meet the requirement of on-axis swap-out injection which is the baseline injection scheme of HEPS.
引文
[1]Xu G,Cui X H,Duan Z,et al.Progress of lattice design and physics studies on the High Energy Photon Source[C]//Proc of the 9th International Particle Accelerator Conference.2018:1375-1378.
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[4]Duan Z,Ji D H,Jiao Y.Study of the dynamic aperture reduction due to error effects for the high energy photon source[C]//Proc of the 9th International Particle Accelerator Conference.2018:4182-4185.
[5]Duan Z,Chen J H,Guo Y Y,et al.The swap-out injection scheme for the High Energy Photon Source[C]//Proc of the 9th International Particle Accelerator Conference.2018:4178-4181.
[6]Harada K,Kobayashi Y,Miyajima T,et al.PF-AR injection system with pulsed quadrupole magnet[C]//Proc of the 3rd Asian Particle Accelerator Conference.2004:344-346.
[7]Kobayashi Y,Harada K.Possibility of the beam injection using a single pulsed sextupole magnet in electron storage rings[C]//Proc of the Tenth European Particle Accelerator Conference.2006:3526-3528
[8]Atkinson T,Dirsat M,Dressler O,et al.Development of a non-linear kicker system to facilitate a new injection scheme for the BESSYII storage ring[C]//Proc of the 2nd International Particle Accelerator Conference.2012:3394-3396
[9]Leemann S C,Dallin L O.Progress on pulsed multipole injection for the MAXIV storage rings[C]//Proc of the 25th Particle Accelerator Conference.2013:1052-1054.
[10]Nakamura T.Bucket-by-bucket on/off-axis injection with variable field fast kicker[C]//Proc of the 2nd International Particle Accelerator Conference.2012:1230-1232.
[11]Yao C,Morrison L,Sun X,et al.Preliminary test results of a prototype fast kicker for APS MBA upgrade[C]//Proc of the North American Particle Accelerator Conference.2016:950-952.
[12]Yao C,Morrison L,Sun X,et al.Development of fast kickers for the APS MBA upgrade[C]//Proc of the 6th International Particle Accelerator Conference.2015:3286-3288
[13]Sun X,Yao C.Simulation studies of a prototype stripline kicker for the APS-MBA upgrade[C]//Proc of the North American Particle Accelerator Conference 2016:928-930.
[14]Steier C,Anders A,Luo T,et al.On-axis swap-out R&D for ALS-U[C]//Proc of the 8th International Particle Accelerator Conference.2017:2821-2823.
[15]Xu G,Chen J,Duan Z,et al.On-axis beam accumulation enabled by phase adjustment of a double-frequency RF system for diffraction-limited storage rings[C]//Proc of the7th International Particle Accelerator Conference.2016:2032-2035.
[16]Aiba M,Bge M,Marcellini F,et al.Longitudinal top-up injection for small aperture storage rings[C]//Proc of the 5th International Particle Accelerator Conference.2014:1842-1844.
[17]Shi H,Chen J H,Wang L,et al.The design and test of a stripline kicker for HEPS[C]//Proc of the Future Light Source Conference.2018:117-119.
[18]Chen J H,Shi H,Wang L.Fast kicker and pulser R&D for the HEPS on-axis injection system[C]//Proc of the 9th International Particle Accelerator Conference.2018:2846-2849.
[19]Shi H,Chen J H,Wang L,et al.Development of a 750-mm-long strip-line kicker for HEPS[J].Radiation Detection Technology and Methods,2018,2:47.
[20]Cook E G.Review of solid-state modulators[C]//Proc of the International Linac Conference.2000.
[21]陈锦晖,韩谦.ns级快脉冲电源研制[J].原子能科学技术,2014,48(1):185-189.(Chen Jinhui,Han Qian.Research and development of ns pulse width ultrafast pulsed power supply.Atomic Energy Science and Technology,2014,48(1):185-189)
[22]Kesar A S,Sharabani Y,Merensky L M.Power drift step recovery diode[J].Solid-State Electronics,1985,28(6):537-644.
[23]Benwell A,Burkhart C,Krasnykh A.A 5kV,3MHz solid-state modulator based on the DSRD switch for an ultra-fast beam kicker[C]//IEEE International Power Modulator and High Voltage Conference.2012:328-331.
[24]Krasnykn A,Benwell A,Beukers T.R&D at SLAC on nanosecond range multi MW systems for advanced FEL facilities[C]//Proc of the38th International Free-Electron Laser Conference.2017.
[2]Jiao Y,Xu G,Peng Y M,et al.Evolution of the lattice design for the High Energy Photon Source[C]//Proc of the 9th International Particle Accelerator Conference.2018:1363-1366.
[3]Jiao Y,Xu G.DA optimization experiences in the HEPS lattice design[J].Journal of Physics Conference Series,2018,1067:032003.
[4]Duan Z,Ji D H,Jiao Y.Study of the dynamic aperture reduction due to error effects for the high energy photon source[C]//Proc of the 9th International Particle Accelerator Conference.2018:4182-4185.
[5]Duan Z,Chen J H,Guo Y Y,et al.The swap-out injection scheme for the High Energy Photon Source[C]//Proc of the 9th International Particle Accelerator Conference.2018:4178-4181.
[6]Harada K,Kobayashi Y,Miyajima T,et al.PF-AR injection system with pulsed quadrupole magnet[C]//Proc of the 3rd Asian Particle Accelerator Conference.2004:344-346.
[7]Kobayashi Y,Harada K.Possibility of the beam injection using a single pulsed sextupole magnet in electron storage rings[C]//Proc of the Tenth European Particle Accelerator Conference.2006:3526-3528
[8]Atkinson T,Dirsat M,Dressler O,et al.Development of a non-linear kicker system to facilitate a new injection scheme for the BESSYII storage ring[C]//Proc of the 2nd International Particle Accelerator Conference.2012:3394-3396
[9]Leemann S C,Dallin L O.Progress on pulsed multipole injection for the MAXIV storage rings[C]//Proc of the 25th Particle Accelerator Conference.2013:1052-1054.
[10]Nakamura T.Bucket-by-bucket on/off-axis injection with variable field fast kicker[C]//Proc of the 2nd International Particle Accelerator Conference.2012:1230-1232.
[11]Yao C,Morrison L,Sun X,et al.Preliminary test results of a prototype fast kicker for APS MBA upgrade[C]//Proc of the North American Particle Accelerator Conference.2016:950-952.
[12]Yao C,Morrison L,Sun X,et al.Development of fast kickers for the APS MBA upgrade[C]//Proc of the 6th International Particle Accelerator Conference.2015:3286-3288
[13]Sun X,Yao C.Simulation studies of a prototype stripline kicker for the APS-MBA upgrade[C]//Proc of the North American Particle Accelerator Conference 2016:928-930.
[14]Steier C,Anders A,Luo T,et al.On-axis swap-out R&D for ALS-U[C]//Proc of the 8th International Particle Accelerator Conference.2017:2821-2823.
[15]Xu G,Chen J,Duan Z,et al.On-axis beam accumulation enabled by phase adjustment of a double-frequency RF system for diffraction-limited storage rings[C]//Proc of the7th International Particle Accelerator Conference.2016:2032-2035.
[16]Aiba M,Bge M,Marcellini F,et al.Longitudinal top-up injection for small aperture storage rings[C]//Proc of the 5th International Particle Accelerator Conference.2014:1842-1844.
[17]Shi H,Chen J H,Wang L,et al.The design and test of a stripline kicker for HEPS[C]//Proc of the Future Light Source Conference.2018:117-119.
[18]Chen J H,Shi H,Wang L.Fast kicker and pulser R&D for the HEPS on-axis injection system[C]//Proc of the 9th International Particle Accelerator Conference.2018:2846-2849.
[19]Shi H,Chen J H,Wang L,et al.Development of a 750-mm-long strip-line kicker for HEPS[J].Radiation Detection Technology and Methods,2018,2:47.
[20]Cook E G.Review of solid-state modulators[C]//Proc of the International Linac Conference.2000.
[21]陈锦晖,韩谦.ns级快脉冲电源研制[J].原子能科学技术,2014,48(1):185-189.(Chen Jinhui,Han Qian.Research and development of ns pulse width ultrafast pulsed power supply.Atomic Energy Science and Technology,2014,48(1):185-189)
[22]Kesar A S,Sharabani Y,Merensky L M.Power drift step recovery diode[J].Solid-State Electronics,1985,28(6):537-644.
[23]Benwell A,Burkhart C,Krasnykh A.A 5kV,3MHz solid-state modulator based on the DSRD switch for an ultra-fast beam kicker[C]//IEEE International Power Modulator and High Voltage Conference.2012:328-331.
[24]Krasnykn A,Benwell A,Beukers T.R&D at SLAC on nanosecond range multi MW systems for advanced FEL facilities[C]//Proc of the38th International Free-Electron Laser Conference.2017.