Williams Wade H, Crane John K, Alessi David A, Boley Charles D, Bowers Mark W, Conder Alan D, Di Nicola Jean-Michel G, Di Nicola Pascale, Haefner Constantin, Halpin John M, Hamamoto Mathew Y, Heebner John E, Hermann Mark R, Herriot Sandrine I, Homoelle Doug C, Kalantar Daniel H, Lanier Thomas E, LaFortune Kai N, Lawson Janice K, Lowe-Webb Roger R, Morrissey Francis X, Nguyen Hoang, Orth Charles D, Pelz Lawrence J, Prantil Matthew A, Rushford Michael C, Sacks Richard A, Salmon J Thaddeus, Seppala Lynn G, Shaw Michael J, Sigurdsson Ronald J, Wegner Paul J, Widmayer C C, Yang Steven T, Zobrist Thomas L
Appl Opt. 2021 Mar 10;60(8):2288-2303. doi: 10.1364/AO.416846.
The advanced radiographic capability (ARC) laser system, part of the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory, is a short-pulse laser capability integrated into the NIF. The ARC is designed to provide adjustable pulse lengths of ∼1-38 in four independent beamlets, each with energies up to 1 kJ (depending on pulse duration). A detailed model of the ARC lasers has been developed that predicts the time- and space-resolved focal spots on target for each shot. Measurements made to characterize static and dynamic wavefront characteristics of the ARC are important inputs to the code. Modeling has been validated with measurements of the time-integrated focal spot at the target chamber center (TCC) at low power, and the space-integrated pulse duration at high power, using currently available diagnostics. These simulations indicate that each of the four ARC beamlets achieves a peak intensity on target of up to a few 10/.
先进射线照相能力（ARC）激光系统是劳伦斯利弗莫尔国家实验室国家点火装置（NIF）的一部分，是集成到NIF中的一种短脉冲激光装置。ARC旨在在四个独立的子光束中提供约1 - 38纳秒的可调脉冲长度，每个子光束的能量高达1千焦（取决于脉冲持续时间）。已经开发出了ARC激光器的详细模型，该模型可以预测每次射击时目标上的时间和空间分辨焦斑。为表征ARC的静态和动态波前特性所进行的测量是该代码的重要输入。利用现有的诊断方法，通过对低功率下靶室中心（TCC）的时间积分焦斑以及高功率下的空间积分脉冲持续时间的测量，对模型进行了验证。这些模拟表明，四个ARC子光束中的每一个在目标上都能实现高达几十拍瓦/平方厘米的峰值强度。
