Numerical Simulation of Electromagnetic Pulse in Target Chamber of Nanosecond Laser Inertial Confinement Facility

2020 ◽  
Vol 40 (9) ◽  
pp. 0914001
Author(s):  
卢志永 Lu Zhiyong ◽  
徐志谦 Xu Zhiqian ◽  
孟萃 Meng Cui ◽  
金晗冰 Jin Hanbing
Keyword(s):  
Numerical Simulation ◽  
Electromagnetic Pulse ◽  
Target Chamber ◽  
Nanosecond Laser ◽  
Inertial Confinement

Numerical Simulation of the SGEMP Inside a Target Chamber of a Laser Inertial Confinement Facility

2017 ◽  
Vol 64 (10) ◽  
pp. 2618-2625 ◽  
Author(s):  
Meng Cui ◽  
Xu Zhiqian ◽  
Jiang Yunsheng ◽  
Zheng Wanguo ◽  
Dang Zhao
Keyword(s):  
Numerical Simulation ◽  
Target Chamber ◽  
Inertial Confinement

scholarly journals Transcriptome profiling of cells exposed to particular and intense electromagnetic radiation emitted by the "SG-III" prototype laser facility

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiangbin Wei ◽  
Qiwu Shi ◽  
Lidan Xiong ◽  
Guang Xin ◽  
Tao Yi ◽  
...  
Keyword(s):  
Dna Damage ◽  
Pc12 Cells ◽  
Inertial Confinement Fusion ◽  
Biological Effects ◽  
Harmful Effect ◽  
Transcriptome Profiling ◽  
Target Chamber ◽  
Target Range ◽  
Inertial Confinement ◽  
Laser Facility

AbstractThe experiment of inertial confinement fusion by the “ShengGuang (SG)-III” prototype laser facility is a transient and extreme reaction process within several nanoseconds, which could form a very complicated and intense electromagnetic field around the target chamber of the facility and may lead to harmful effect on people around. In particular, the biological effects arising from such specific environment field could hardly be ignored and have never been investigated yet, and thus, we reported on the investigation of the biological effects of radiation on HaCat cells and PC12 cells to preliminarily assess the biological safety of the target range of the "SG-III" prototype laser facility. The viability revealed that the damage of cells was dose-dependent. Then we compared the transcriptomes of exposed and unexposed PC12 cells by RNA-Seq analysis based on Illumina Novaseq 6000 platform and found that most significantly differentially expressed genes with corresponding Gene Ontology terms and pathways were strongly involved in proliferation, transformation, necrosis, inflammation response, apoptosis and DNA damage. Furthermore, we find increase in the levels of several proteins responsible for cell-cycle regulation and tumor suppression, suggesting that pathways or mechanisms regarding DNA damage repair was are quickly activated. It was found that "SG-III" prototype radiation could induce DNA damage and promote apoptotic necrosis.

scholarly journals Target alignment in the Shen-Guang II Upgrade laser facility

2018 ◽  
Vol 6 ◽  
Author(s):  
Lei Ren ◽  
Ping Shao ◽  
Dongfeng Zhao ◽  
Yang Zhou ◽  
Zhijian Cai ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
Short Pulse ◽  
Three Dimensional ◽  
Nanosecond Laser ◽  
Alignment Error ◽  
Inertial Confinement ◽  
Pulse Beam ◽  
Rotation Sensor ◽  
Confinement Fusion ◽  
Laser Facility

The Shen-Guang II Upgrade (SG-II-U) laser facility consists of eight high-power nanosecond laser beams and one short-pulse picosecond petawatt laser. It is designed for the study of inertial confinement fusion (ICF), especially for conducting fast ignition (FI) research in China and other basic science experiments. To perform FI successfully with hohlraum targets containing a golden cone, the long-pulse beam and cylindrical hohlraum as well as the short-pulse beam and cone target alignment must satisfy tight specifications (30 and $20~\unicode[STIX]{x03BC}\text{m}$ rms for each case). To explore new ICF ignition targets with six laser entrance holes (LEHs), a rotation sensor was adapted to meet the requirements of a three-dimensional target and correct beam alignment. In this paper, the strategy for aligning the nanosecond beam based on target alignment sensor (TAS) is introduced and improved to meet requirements of the picosecond lasers and the new six LEHs hohlraum targets in the SG-II-U facility. The expected performance of the alignment system is presented, and the alignment error is also discussed.

scholarly journals Determination of energy gain time dependent in D+T mixture with calculating total energy deposited of deuteron beam in hot spot

2014 ◽  
Vol 1 (1) ◽  
pp. 7-21
Author(s):  
S. N. Hoseinimotlagh ◽  
M. Jahedi
Keyword(s):  
Laser Pulse ◽  
Inertial Confinement Fusion ◽  
Hot Spot ◽  
Deuteron Beam ◽  
Energy Gain ◽  
Nanosecond Laser Pulse ◽  
Nanosecond Laser ◽  
Inertial Confinement ◽  
Fusion Reactions ◽  
Coupled Equations

The fast ignition (FI) mechanism, in which a pellet containing the thermonuclear fuel is first compressed by a nanosecond laser pulse, and then  irradiated by an intense "ignition" beam, initiated by a  high power picosecond laser pulse,  is one of the promising approaches to the realization of the inertial confinement fusion (ICF). If the ignition beam is composed of deuterons, an additional energy is delivered to the target, coming from fusion reactions of the beam-target type, directly initiated by particles from the ignition  beam .In this work, we choose the D+T fuel and  at first step we compute the average reactivity in terms of temperature for first time at second step we use the obtained results of step one and calculate the total deposited energy of deuteron beam inside the target fuel at available physical condition then in  third step we introduced the dynamical balance equation of D+T mixture and solve these nonlinear  differential coupled  equations versus time .In forth step we compute the power density and energy gain under physical optimum conditions and at final step we concluded that  maximum  energy deposited  in the target from D+T and D+D reaction are equal to  to19269.39061 keV and 39198.58043 keV respectively.  

scholarly journals Computer modeling of ICF target chamber phenomena

1994 ◽  
Vol 12 (2) ◽  
pp. 125-162 ◽  
Author(s):  
Gregory A. Moses ◽  
Robert R. Peterson
Keyword(s):  
Computer Modeling ◽  
Inertial Confinement Fusion ◽  
High Repetition Rate ◽  
Phase Changes ◽  
Physical Models ◽  
Test Facility ◽  
High Yield ◽  
Target Chamber ◽  
Inertial Confinement ◽  
Design Strategies

The target chamber of an inertial confinement fusion (ICF) power plant or high-yield test facility must be designed to absorb the target produced Xrays and ions and survive the resulting effects. The target chamber conditions must be restored in fractions of a second for high repetition rate power applications. Computer modeling of these phenomena is essential because equivalent conditions cannot be produced in laboratory experiments prior to the first ignition of high-yield ICF targets. Choices of models are dictated by specific reactor design strategies. The two major strategies, gas protection and sacrificial first surfaces, are used as a guide to our discussion. Physical models for ion, electron, and X-ray deposition are discussed, along with physical and numerical modeling of the resulting phase changes intarget chamber structures. The hydrodynamics and radiative transfer in the target chamber vapors and plasmas are central topics.

scholarly journals Numerical simulation of mixing by Rayleigh–Taylor and Richtmyer–Meshkov instabilities

1994 ◽  
Vol 12 (4) ◽  
pp. 725-750 ◽  
Author(s):  
D.L. Youngs
Keyword(s):  
Numerical Simulation ◽  
Turbulence Model ◽  
Turbulent Mixing ◽  
Inertial Confinement Fusion ◽  
Three Dimensional ◽  
Small Scale ◽  
Inertial Confinement ◽  
Two Dimensional ◽  
Confinement Fusion ◽  
Icf Target

Rayleigh-Taylor (RT) and Richtmyer–Meshkov (RM) instabilities at the pusher–fuel interface in inertial confinement fusion (ICF) targets may significantly degrade thermonuclear burn. Present-day supercomputers may be used to understand the fundamental instability mechanisms and to model the effect of the ensuing mixing on the performance of the ICF target. Direct three-dimensional numerical simulation is used to investigate turbulent mixing due to RT and RM instability in simple situations. A two-dimensional turbulence model is used to assess the effect of small-scale turbulent mixing in the axisymmetric implosion of an idealized ICF target.

General Structure Layout and Design of Target Area of SGIII Facility

2013 ◽  
Vol 765-767 ◽  
pp. 286-290
Author(s):  
Ming Zhi Zhu ◽  
Xiao Juan Chen ◽  
Mei Cong Wang ◽  
Wen Kai Wu ◽  
Gang Chen ◽  
...  
Keyword(s):  
Structural Design ◽  
Inertial Confinement Fusion ◽  
General Structure ◽  
Target Chamber ◽  
Target Area ◽  
Inertial Confinement ◽  
Optical Elements ◽  
Confinement Fusion ◽  
Mechanical Elements ◽  
Structure Layout

ShenGuang III (SGIII) facility will be constructed for research in Inertial Confinement Fusion. In this paper, general structure layout and design of target area of SGIII facility are described. Target area structure support system must provide a stable and precisely platform for optical elements before and during a shot. General structure layout must satisfy the mul-function consideration and logistic priority. The modularity and hardware commonality, cleanliness, and low neutron activation should be considered in the structural design of target area. The general structure layout of target area is rectangle. The target bay and the switchyard have the multi-layered layout to satisfy the demand of transporting beam lasers unidirectionally from south to north and supporting the optics modules and physical diagnostic instruments with different height. The passageways of population & goods flow of target area are designed to include the vertical channels between the different layers and the horizontal channels on the same layer. The opto-mechanical elements (OM) are classified as OM1, OM2, and OM3. The OM1 are the infrastructures. The OM2 include target chamber, the shell of final optics assemblies, the mirror frames, and the beam enclosures. The OM3 is line replaceable units that are attached to the OM2 on kinematic equivalent three-vee mounts.

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