A compact pulsed power driver with precisely shaped current waveforms for magnetically driven loading experiments

Magnetically driven loading techniques based on high current pulsed power drivers are very important tools for researching material dynamic behaviors and high-pressure physics. Based on the technologies of a Marx generator energy storage and low impedance coaxial cable energy transmission, a compact...

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Veröffentlicht in:Review of scientific instruments 2022-08, Vol.93 (8), p.083910-083910
Hauptverfasser: Chen, Xuemiao, Luo, Binqiang, Zhang, Xuping, Wang, Guiji, Tan, Fuli, Shui, Rongjie, Xu, Chao, Wu, Gang, Ma, Xiao, Zhao, Jianheng, Liu, Cangli, Sun, Chengwei, Zhang, Linwen
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container_end_page 083910
container_issue 8
container_start_page 083910
container_title Review of scientific instruments
container_volume 93
creator Chen, Xuemiao
Luo, Binqiang
Zhang, Xuping
Wang, Guiji
Tan, Fuli
Shui, Rongjie
Xu, Chao
Wu, Gang
Ma, Xiao
Zhao, Jianheng
Liu, Cangli
Sun, Chengwei
Zhang, Linwen
description Magnetically driven loading techniques based on high current pulsed power drivers are very important tools for researching material dynamic behaviors and high-pressure physics. Based on the technologies of a Marx generator energy storage and low impedance coaxial cable energy transmission, a compact high current pulsed power driver CQ-7 was developed and established at the Institute of Fluid Physics, China Academy of Engineering Physics, which can generate precisely shaped current waveforms for magnetically driven loading experiments. CQ-7 is composed of 256 two-stage Marx generators in parallel with low impedance, high voltage coaxial cables for current output. The 256 Marx generators are divided into 16 groups, and each separate group can be individually triggered to discharge and shape currents in sequence by a low jitter, high voltage pulse trigger with 16 output signals. The electrical parameters of CQ-7 are a capacitance of 20.48 µF, an inductance of 4.12 nH, and a resistance of 3.35 mΩ in a short circuit. When working at the charging voltage of ±40–±60 kV, CQ-7 can deliver a peak current from 5 to 7 MA to the short-circuit loads with a rising time of 400–700 ns at different discharging time sequences. Two different experiments were conducted to test the performance of CQ-7: magnetically driven high velocity flyer plates and solid liner implosion. The results show that CQ-7 can accelerate the aluminum flyer plate with a size of 12 × 8 × 1 mm3 to more than 7.5 km/s and uniformly drive the aluminum liner with an inner diameter of 6.2 mm and a thickness of 0.4 mm to more than 9.5 km/s. Furthermore, these experiments indicate that CQ-7 is a robust platform for material dynamics and high-pressure physics.
doi_str_mv 10.1063/5.0089939
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Based on the technologies of a Marx generator energy storage and low impedance coaxial cable energy transmission, a compact high current pulsed power driver CQ-7 was developed and established at the Institute of Fluid Physics, China Academy of Engineering Physics, which can generate precisely shaped current waveforms for magnetically driven loading experiments. CQ-7 is composed of 256 two-stage Marx generators in parallel with low impedance, high voltage coaxial cables for current output. The 256 Marx generators are divided into 16 groups, and each separate group can be individually triggered to discharge and shape currents in sequence by a low jitter, high voltage pulse trigger with 16 output signals. The electrical parameters of CQ-7 are a capacitance of 20.48 µF, an inductance of 4.12 nH, and a resistance of 3.35 mΩ in a short circuit. When working at the charging voltage of ±40–±60 kV, CQ-7 can deliver a peak current from 5 to 7 MA to the short-circuit loads with a rising time of 400–700 ns at different discharging time sequences. Two different experiments were conducted to test the performance of CQ-7: magnetically driven high velocity flyer plates and solid liner implosion. The results show that CQ-7 can accelerate the aluminum flyer plate with a size of 12 × 8 × 1 mm3 to more than 7.5 km/s and uniformly drive the aluminum liner with an inner diameter of 6.2 mm and a thickness of 0.4 mm to more than 9.5 km/s. 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When working at the charging voltage of ±40–±60 kV, CQ-7 can deliver a peak current from 5 to 7 MA to the short-circuit loads with a rising time of 400–700 ns at different discharging time sequences. Two different experiments were conducted to test the performance of CQ-7: magnetically driven high velocity flyer plates and solid liner implosion. The results show that CQ-7 can accelerate the aluminum flyer plate with a size of 12 × 8 × 1 mm3 to more than 7.5 km/s and uniformly drive the aluminum liner with an inner diameter of 6.2 mm and a thickness of 0.4 mm to more than 9.5 km/s. 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Luo, Binqiang ; Zhang, Xuping ; Wang, Guiji ; Tan, Fuli ; Shui, Rongjie ; Xu, Chao ; Wu, Gang ; Ma, Xiao ; Zhao, Jianheng ; Liu, Cangli ; Sun, Chengwei ; Zhang, Linwen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c360t-b478cb68ef53a92d254a0dc8ee2c83856360cb8d8b3f17534da50dc2b157d6ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Aluminum</topic><topic>Circuits</topic><topic>Coaxial cables</topic><topic>Diameters</topic><topic>Discharge</topic><topic>Energy storage</topic><topic>Energy transmission</topic><topic>Experiments</topic><topic>Generators</topic><topic>High current</topic><topic>High pressure</topic><topic>High voltages</topic><topic>Impedance</topic><topic>Inductance</topic><topic>Marx generators</topic><topic>Physics</topic><topic>Scientific apparatus &amp; instruments</topic><topic>Short circuits</topic><topic>Waveforms</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Xuemiao</creatorcontrib><creatorcontrib>Luo, Binqiang</creatorcontrib><creatorcontrib>Zhang, Xuping</creatorcontrib><creatorcontrib>Wang, Guiji</creatorcontrib><creatorcontrib>Tan, Fuli</creatorcontrib><creatorcontrib>Shui, Rongjie</creatorcontrib><creatorcontrib>Xu, Chao</creatorcontrib><creatorcontrib>Wu, Gang</creatorcontrib><creatorcontrib>Ma, Xiao</creatorcontrib><creatorcontrib>Zhao, Jianheng</creatorcontrib><creatorcontrib>Liu, Cangli</creatorcontrib><creatorcontrib>Sun, Chengwei</creatorcontrib><creatorcontrib>Zhang, Linwen</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Xuemiao</au><au>Luo, Binqiang</au><au>Zhang, Xuping</au><au>Wang, Guiji</au><au>Tan, Fuli</au><au>Shui, Rongjie</au><au>Xu, Chao</au><au>Wu, Gang</au><au>Ma, Xiao</au><au>Zhao, Jianheng</au><au>Liu, Cangli</au><au>Sun, Chengwei</au><au>Zhang, Linwen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A compact pulsed power driver with precisely shaped current waveforms for magnetically driven loading experiments</atitle><jtitle>Review of scientific instruments</jtitle><date>2022-08-01</date><risdate>2022</risdate><volume>93</volume><issue>8</issue><spage>083910</spage><epage>083910</epage><pages>083910-083910</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>Magnetically driven loading techniques based on high current pulsed power drivers are very important tools for researching material dynamic behaviors and high-pressure physics. Based on the technologies of a Marx generator energy storage and low impedance coaxial cable energy transmission, a compact high current pulsed power driver CQ-7 was developed and established at the Institute of Fluid Physics, China Academy of Engineering Physics, which can generate precisely shaped current waveforms for magnetically driven loading experiments. CQ-7 is composed of 256 two-stage Marx generators in parallel with low impedance, high voltage coaxial cables for current output. The 256 Marx generators are divided into 16 groups, and each separate group can be individually triggered to discharge and shape currents in sequence by a low jitter, high voltage pulse trigger with 16 output signals. The electrical parameters of CQ-7 are a capacitance of 20.48 µF, an inductance of 4.12 nH, and a resistance of 3.35 mΩ in a short circuit. When working at the charging voltage of ±40–±60 kV, CQ-7 can deliver a peak current from 5 to 7 MA to the short-circuit loads with a rising time of 400–700 ns at different discharging time sequences. Two different experiments were conducted to test the performance of CQ-7: magnetically driven high velocity flyer plates and solid liner implosion. The results show that CQ-7 can accelerate the aluminum flyer plate with a size of 12 × 8 × 1 mm3 to more than 7.5 km/s and uniformly drive the aluminum liner with an inner diameter of 6.2 mm and a thickness of 0.4 mm to more than 9.5 km/s. Furthermore, these experiments indicate that CQ-7 is a robust platform for material dynamics and high-pressure physics.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0089939</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0001-6666-852X</orcidid><orcidid>https://orcid.org/0000-0003-2294-7329</orcidid></addata></record>
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Aluminum
Circuits
Coaxial cables
Diameters
Discharge
Energy storage
Energy transmission
Experiments
Generators
High current
High pressure
High voltages
Impedance
Inductance
Marx generators
Physics
Scientific apparatus & instruments
Short circuits
Waveforms
title A compact pulsed power driver with precisely shaped current waveforms for magnetically driven loading experiments
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