中国SG-III激光设施的高能性能与应用

138 浏览量更新于2024-08-27 收藏 3.33MB PDF 举报

SG-III激光设施是中国目前最大的惯性约束聚变研究激光驱动器，其核心在于其卓越的性能和在高能密度物理领域的关键作用。该设施能够将高达180千焦耳的能量和60太瓦的紫外线激光聚焦到目标上，实现了超过10%的功率平衡，这对于惯性约束聚变实验至关重要，因为它直接影响到能量的有效传输和靶心的加热效率。 SG-III激光系统的详细介绍表明，它包括先进的脉冲能源技术、精密的光学系统以及高效的能量传输路径。激光器采用了多脉冲技术和高强度光纤放大技术，确保了高能量的稳定输出。整个设施的控制系统能够实现精细的光路调整和优化，以达到最佳的聚变条件。此外，它还具有良好的稳定性，能够在长时间运行中保持高性能输出。论文《SG-III激光设施的性能》发表于《高功率激光科学与工程》（HighPower Laser Science and Engineering）2016年第四卷，第21期，全文共8页。这标志着中国在惯性约束聚变研究领域的持续投入和技术创新。作者们详细描述了设计、建造和测试过程中遇到的关键挑战，以及如何通过技术改进来提高激光性能。该设施的性能指标对于理解激光在惯性约束聚变中的作用具有重要意义，例如，短脉冲的聚焦能力、激光强度的均匀性以及激光与靶的相互作用特性。这些数据有助于评估聚变反应的可能性，同时也有助于其他科学研究，如等离子体物理学、材料科学和极端条件下物理现象的研究。 SG-III激光设施的高性能展示了中国在推动激光驱动惯性约束聚变研究方面的领先地位，它的成果不仅对国内科研有重大影响，也对全球聚变能源开发产生了积极影响。未来的研究将继续致力于优化激光性能，降低阈值并探索更有效的聚变反应模式，以期为未来的清洁能源解决方案提供强有力的支持。

High Power Laser Science and Engineering, (2016), Vol. 4, e21, 8 pages.

licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

doi:10.1017/hpl.2016.20

Laser performance of the SG-III laser facility

Wanguo Zheng

1,2

, Xiaofeng Wei

, Qihua Zhu

1,2

, Feng Jing

, Dongxia Hu

1,2

, Jingqin Su

1,2

Kuixing Zheng

, Xiaodong Yuan

, Hai Zhou

, Wanjun Dai

, Wei Zhou

, Fang Wang

, Dangpeng Xu

Xudong Xie

, Bin Feng

, Zhitao Peng

, Liangfu Guo

, Yuanbin Chen

, Xiongjun Zhang

, Lanqin Liu

Donghui Lin

, Zhao Dang

, Yong Xiang

, and Xuewei Deng

1,2

Laser Fusion Research Center, China Academy of Engineering Physics, P.O. Box 919-988, MianYang 621900, China

IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China

(Received 4 April 2016; revised 2 June 2016; accepted 14 June 2016)

Abstract

SG-III laser facility is now the largest laser driver for inertial conﬁnement fusion research in China. The whole laser

facility can deliver 180 kJ energy and 60 TW power ultraviolet laser onto target, with power balance better than 10%.

We review the laser system and introduce the SG-III laser performance here.

Keywords: inertial conﬁnement fusion; laser driver; SG-III

1. Introduction

As one of the major approaches to achieve controllable

fusion ignition, laser driven inertial conﬁnement fusion (ICF)

has been widely studied around the world

[1–4]

. As essential

drivers, several huge laser facilities have been constructed,

such as the National Ignition Facility (NIF) in the United

States

[5]

, the laser megajoule (LMJ) in France

[6]

and the

SG-III laser facility in China

[7]

. These laser facilities are

designed to provide timely tailored ultraviolet laser driving

during as long as tens of nanoseconds, producing x-ray

radiation in a hohlraum which then compresses DT pellet

to achieve fusion ignition

[4]

. In order to deliver more

energy onto the target, the lasers have to be converted to

ultraviolet, and wavelength tuning is required to avoid energy

loss. Typically, fusion level laser facilities are designed to

output MJ level laser energy. NIF has 192 laser beamlines,

providing 1.8 MJ laser energy. LMJ also has 1.8 MJ

designed output capability with 240 beamlines. The SG-III

laser facility is the largest laser driver in China at present,

which is designed to deliver 180 kJ ultraviolet laser energy

onto the target, exploring the key physics processes and the

technologies of ICF, while not to achieve fusion ignition.

The engineering construction of the SG-III laser facility

started in 2007, lasting nearly 8 years, and met its goal of

generating 180 kJ/3 ns/351 nm laser energy in 2015. The

Correspondence to: X. Deng, Laser Fusion Research Center, China

Academy of Engineering Physics, P.O. Box 919-988, MianYang 621900,

China. Email: xwdeng@caep.cn

whole laser facility was designed and collectively integrated

by Laser Fusion Research Center in China Academy of

Engineering Physics. In the past 8 years, this largest

laser facility in China has involved nearly 200 institutes,

universities and companies as vendor, and several thousands

of scientists, engineers, technicians and skilled laborers have

worked for it. The ﬁrst shot in SG-III with its full output

capability was conducted in 14 September 2015, in which

shot the output 351 nm ultraviolet laser energy reached

181.3 kJ, exceeding its designed point for the ﬁrst time.

This meaningful shot indicated that China had ﬁnished the

engineering construction of the 100 kJ level ICF research

platform and the SG-III laser facility established its world

second output capability currently.

In this paper, we brieﬂy review the laser system and then

introduce the SG-III laser performance in detail. After

precise adjustment, the whole laser facility has met all

the design requirements, such as the 180 kJ energy and

60 TW power ultraviolet output capability, 30 µm pointing

precision, 10 ps synchronization level (root mean square

(RMS) value), 10% power balance level (RMS value), pulse

shaping capability and so on, which form solid foundations

for deeper ICF researches in China.

2. System conﬁguration

The SG-III laser facility possesses 48 laser beams, which

are divided into six bundles with 4 × 2 beam arrangement

下载后可阅读完整内容，剩余7页未读，立即下载

weixin_38545243

粉丝: 7

中国SG-III激光设施的高能性能与应用

Generation and measurement of complex laser pulse shapes in the SG-III laser facility

Online determination of the source of stray light in the SG-III high-power laser facility

Hard x-ray transmission curved crystal spectrometers (10–100 keV) for laser fusion experiments at the ShenGuang-III laser facility

Characterization of electromagnetic pulses via arrays on ShenGuang-III laser facility laser

Analysis and construction status of SG-II 5PW laser facility

Laboratory study of astrophysical collisionless shock at SG-II laser facility

SG-II Laser Facility Improvement and Its Precision Progress

Surface phase defects induced downstream laser intensity modulation in high-power laser facility

快速定位SG-III高能激光装置杂散光源技术

SG-III装置上质子光谱仪在ICF冲击波炸膛密度诊断中的应用

最新资源