Koester P, Baffigi F, Cristoforetti G, Labate L, Gizzi L A, Baton S, Koenig M, Colaïtis A, Batani D, Casner A, Raffestin D, Tentori A, Trela J, Rousseaux C, Boutoux G, Brygoo S, Jacquet L, Reverdin C, Le Bel E, Le-Deroff L, Theobald W, Shigemori K
Intense Laser Irradiation Laboratory, Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, Via G. Moruzzi 1, 56124 Pisa, Italy.
Laboratoire pour l'Utilisation des Lasers Intenses, LULI, CNRS-Ecole Polytechnique-CEA-Sorbonne Universités, UMR 7605, F-91128 Palaiseau, France.
Rev Sci Instrum. 2021 Jan 1;92(1):013501. doi: 10.1063/5.0022030.
We report on the optimization of a BremsStrahlung Cannon (BSC) design for the investigation of laser-driven fast electron populations in a shock ignition relevant experimental campaign at the Laser Megajoule-PETawatt Aquitaine Laser facility. In this regime with laser intensities of 10 W/cm-10 W/cm, fast electrons with energies ≤100 keV are expected to be generated through Stimulated Raman Scattering (SRS) and Two Plasmon Decay (TPD) instabilities. The main purpose of the BSC in our experiment is to identify the contribution to x-ray emission from bremsstrahlung of fast electrons originating from SRS and TPD, with expected temperatures of 40 keV and 95 keV, respectively. Data analysis and reconstruction of the distributions of x-ray photons incident on the BSC are described.
我们报告了在激光兆焦耳-拍瓦阿基坦激光装置进行的与冲击点火相关的实验中，为研究激光驱动的快电子群体而对韧致辐射炮（BSC）设计进行的优化。在这种激光强度为10¹⁹W/cm² - 10²¹W/cm²的情况下，预计通过受激拉曼散射（SRS）和双等离子体衰变（TPD）不稳定性产生能量≤100keV的快电子。我们实验中BSC的主要目的是确定分别来自SRS和TPD的预期温度为40keV和95keV的快电子韧致辐射对X射线发射的贡献。描述了对入射到BSC上的X射线光子分布的数据分析和重建。
