“聚龙一号”装置24路模块精确控制技术

何安; 丁瑜; 康军军; 任济; 王贵林; 张朝辉; 夏明鹤; 计策

doi:10.11884/HPLPB201830.170353

“聚龙一号”装置24路模块精确控制技术

doi: 10.11884/HPLPB201830.170353

中国工程物理研究院流体物理研究所, 四川绵阳 621900

详细信息

作者简介:
何安(1964-)，男，博士，从事脉冲功率技术研究; hean66@tom.com

中图分类号: O56;TL503
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出版历程
- 收稿日期: 2017-09-05
- 修回日期: 2017-11-15
- 刊出日期: 2018-03-15

Accurate control technology of 24 modules in PTS

Institute of Fluid Physics, CAEP, P.O.Box 919-108, Mianyang 621900, China

摘要

摘要: 介绍了Z箍缩初级实验平台“聚龙一号”装置24路模块的精确控制技术和实验结果, 通过采用24个激光触发开关来控制24路模块的精确导通, 实现了对“聚龙一号”装置输出电流波形的精确控制和调节。24个激光触发开关由12台Nd: YAG四倍频脉冲激光器来触发, 每台激光器分光后触发2路激光开关。实验结果表明: 24路激光之间的抖动小于1.0 ns, 激光开关的抖动小于1.5 ns，“聚龙一号”装置在主Marx充电电压为65 kV时, 当24路模块同步导通时，获得负载电流9.8 MA, 电流前沿上升时间(10%~90%)为75 ns；在24路模块分时放电时，实现了对电流波形的精确调节，电流前沿上升时间(10%~90%)可以拓展到600 ns, 对应的负载电流峰值为5.5 MA，电流波形的模拟值与实验测量结果基本一致，在相同负载和实验条件下，获得的电流波形具有很好的重复性。
- 激光开关 /
- 触发 /
- 抖动 /
- Nd: YAG激光器
Abstract: The accurate control technology for 24 modules of the Primary Test Stand (PTS) and the experimental results are given in this paper. The synchronicity of 24 lines pulsed current is controlled by 24 laser trigger switches. The current waveform can form through adjusting laser time easily. 24 laser trigger switches are triggered by 12 Q- switched Nd: YAG fourth harmonic 266 nm laser, i.e., two laser switches are triggered by one laser. The experimental results show that the jitter of the laser trigger system is less than 1.0 ns, the jitter of switch is less than 1.5 ns. The load current is 9.8 MA and the rising time of current is 75 ns under 65 kV charging voltage, when 24 modules are triggered synchronously. The adjusting range of rising time of current get to about 600 ns, 5.5 MA in PTS. The measured result of current waveform is consistent with the simulation result. The current waveform is repeatable for same load.
- laser triggering switch /
- trigger /
- jitter /
- Nd: YAG laser

HTML全文

图 1 “聚龙一号”装置一路模块的结构示意图

Figure 1. Structure schematic of one module in PTS

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图 2 上下两台激光器安装及分光示意图

Figure 2. Layout of two lasers

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图 3 24路模块精确控制框图

Figure 3. Block diagram of 24 modules

IS-intermediate storage capacitor; LTGS-laser trigger gas switch; PFL-pulse forming line; TL-transmission line; VIS-vacuum insulation stack

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图 4 24路模块主开关的触发时间

Figure 4. Triggering time of 24 laser switches

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图 5 模拟电流和实验测量电流波形对比(第154发次实验)

Figure 5. Comparison of current waveform between measurement and simulation

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图 6 两发实验电流波形比较

Figure 6. Comparison of current waveform in two shot experiments

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表 1 12台激光器出光时间设置和24路模块对应的触发时间

Table 1. Lasing onset time (design time) of 12 lasers and triggering time of 24 modules

laser number	L1	L2	L3	L4	L5	L6	L7	L8	L9	L10	L11	L12
design time/ns	1810	1670	1820	1540	1785	1720	1795	1590	1820	1810	1610	1720
odd module(1-23)/ns	1810	1820	1820	1785	1785	1795	1795	1820	1820	1610	1610	1810
even module(2-24)/ns	1720	1670	1670	1540	1540	1720	1720	1590	1590	1810	1810	1720

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参考文献(9)

[1]	丰树平, 李洪涛, 谢卫平, 等. Z箍缩初级实验平台模块样机[J]. 强激光与粒子束, 2009, 21 (3): 463-467. http://www.hplpb.com.cn/article/id/3955 Feng Shuping, Li Hongtao, Xie Weiping, et al. Development of prototype module of Z-pinch primary test stand. High Power Laser and Particle Beams, 2009, 21 (3): 463-467 http://www.hplpb.com.cn/article/id/3955
[2]	He An, Li Fengping, Deng Jianjun, et al. Primary investigation into the laser triggering multi-gap multi-channel gas switch in a single test module facility[J]. Plasma Sci Technol, 2006, 8 (5): 602-606.
[3]	Matzen M K, Sweeney M A, Adams R G. Pulsed-power-driven high energy density physics and inertial confinement fusion research[J]. Phys Plasmas, 2005, 12 : 055503. doi: 10.1063/1.1891746
[4]	Weinbrecht E A, Bloomquist D D, McDaniel D H, et al. Update of the Z Refurbishment project (ZR) at Sandia National Laboratories[C]//16th IEEE International Pulsed Power Conference. 2007: 975-978.
[5]	Rogowski S T, Bliss D E, Adams R G. A study of timing jitter improvements on Z with a new laser triggering system[C]//14th IEEE International Pulsed Power Conference. 2003: 1371-1374.
[6]	Weinbrecht E A, Bloomquist D D, McDaniel D H. Status of the Z Refurbishment Project (ZR) at Sandia National Laboratories[C]//15th IEEE International Pulsed Power Conference. 2005: 170-173.
[7]	Savage M, LeChien K, Stygar W. Overview and status of the upgraded z pulsed power driver[C]//IEEE International Power Modulator and High Voltage Conference. 2008: 93.
[8]	Li Hongtao, Xie Weiping, Feng Shuping, et al. Development of a high-reliability low-jitter 6 MV/300 kJ Marx generator[J]. Plasma Sources Sci Technol, 2008, 17 : 015001. doi: 10.1088/0963-0252/17/1/015001
[9]	Woodworth J R, Molina I, Nelson D. Green-laser-triggered water switching at 1. 6 MV[J]. IEEE Trans Dielectrics and Electrical Insulation, 2007, 14 (4): 951-957.