High-Repetition-Rate Diagnostics with Integrated Active Control for a New Paradigm of High-Energy-Density Experiments

Executive Summary

We are designing an advanced suite of laser plasma radiation source diagnostics capable of operating at high repetition rates, with integrated machine learning analysis capable of feedback to optimize and stabilize the laser system. This will enable us to study high-energy-density environments in unprecedented detail, vastly enhancing our understanding and predictive capability in stockpile stewardship science.

Publications, Presentations, and Patents

Simpson, R.A., D. Mariscal, G. J. Williams, G. G. Scott, E. Grace, and T. Ma. 2021. “Development of a Deep-learning Based Automated Data Analysis for Step-Filter X-Ray Spectrometers in Support of High-Repetition Rate Short-Pulse Laser-Driven Acceleration Experiments.” Review of Scientific Instruments 92: 075101. https://doi.org/10.1063/5.0043835.

Scott, G.G., G. F. H. Indorf, M. A. Ennen, P. Forestier-Colleoni, S. J. Hawkes, L. Scaife, M. Sedov, D. R. Symes, C. Thornton, F. Beg, T. Ma, P. McKenna, A. A. Andreev, U. Teubner, and D. Neely. 2011. “Kinematics of Femtosecond Laser-Generated Plasma Expansion: Determination of Sub-Micron Density-Gradient and Collisionality Evolution of Over-Critical Laser Plasmas.” Physics of Plasmas 28: 093109. https://doi.org/10.1063/5.0038549.

Mariscal, D., B. Djordjevıc, E. Grace, R. Hollinger, T. Ma, G. G. Scott, H. Song, R. Simpson, J. J. Rocca, and S. Wang. 2021. “Design of Flexible Proton Beam Imaging Energy Spectrometers (PROBIES).” Plasma Physics and Controlled Fusion 63:114003. https://doi.org/10.1088/1361-6587/ac234a

Scott, G.G., D. A. Mariscal, D. Canning, R. F. Heeter, M. Krieger, R. J. Wallace, C. McGuffey, J. L. Peebles, R. A. Simpson, C. Stoeckl, and T. Ma. 2021. “Demonstration of Plasma Mirror Capability for the OMEGA-EP Laser System.” Review of Scientific Instruments 93:043006.

Mariscal, D.A., C. M. Krauland, B. Z. Djordjević, G. G. Scott, R. A. Simpson, E. S. Grace, K. Swanson, and T. Ma. 2022. “Enhanced Analysis of Experimental X-Ray Spectra through Deep Learning.” Physics of Plasmas 29:093901. https://doi.org/10.1063/5.0097777.

Zeraouli, G., D. Mariscal, E. Grace, G. G. Scott, K. K. Swanson, R. Simpson, B. Z. Djordjevic, R. Nedbailo, H. Song, J. Morrison, J. Park, R. Hollinger, S. Wang, J. J. Rocca, and T. Ma. 2022. “Ultra-Compact X-Ray Spectrometer for High-Repetition-Rate Laser-Plasma Experiments.” Review of Scientific Instruments. Accepted.