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Laurie Stephey

laurie cori
Laurie Stephey
Data Analytics Engineer

Biographical Sketch

Laurie Stephey is a Data Analytics Engineer in the Data Analytics and Services group. Previously she was a postdoctoral fellow in the NERSC NESAP for Data program. She is working with the DESI (Dark Energy Spectroscopic Instrument) project to help make their large-scale data processing run efficiently at NERSC on both current systems (Cori) and future systems (Perlmutter). She is especially interested in how to port Python code to GPU architectures.

Laurie earned her Ph.D. from the University of Wisconsin-Madison in 2017 studying edge physics in the HSX and W7-X stellarators. In 2009, she earned her B.A. in Physics from Rollins College in Orlando, Florida. She has also worked on musical acoustics, thin-layer deposition, x-ray simulation, and memristor device research projects. 

Research Interests

Using Python in scientific computing, scientific workflows, dark energy, deep learning, superconducting magnets, plasma physics and fusion


L. A. Stephey, R. C. Thomas, and S. J. Bailey. "Optimizing Python-Based Spectroscopic Data Processing on NERSC Supercomputers." Proceedings of the 18th Python in Science Conf. (Scipy). July 2019. 

L. Stephey, A. Bader, F. Effenberg, O. Schmitz, G. A. Wurden, D. T. Anderson, F. S. B. Anderson, C. Biedermann, A. Dinklage, Y. Feng, H. Frerichs, G. Fuchert, J. Geiger, J. Harris, R. Koenig, P. Kornejew, M. Krychowiak, J. D. Lore, E. A. Unterberg, I. Waters, and the W7-X Team. "Impact of magnetic islands in the plasma edge on particle fueling and exhaust in the HSX and W7-X stellarators." Physics of Plasmas, Volume 25, Issue 6 (2018).

C. Buelo, L. Stephey, F. S. B. Anderson, D. Eisert, and D. T. Anderson. "Development of a 3-D visible limiter imaging system for the HSX stellarator." Review of Sci. Instrum., Volume 88, Issue 12 (2017).

L. Stephey, G. A. Wurden, O. Schmitz, H. Frerichs, F. Eenberg, C. Biedermann, J. Harris, R Koenig, P. Kornejew, M. Krychowiak, E. A. Unterberg and the W7-X Team. "Spectroscopic imaging of limiter heat and particle fluxes and of the resulting impurity sources during Wendelstein 7-X startup plasmas." Review of Sci. Instrum 87, 11D606 (2016).

J. L. Tedesco, L. Stephey, M. Hernandez-More, C. A. Richter, and N. Gergel-Hackett. "Switching mechamisms in flexible solution-processed TiO2 memristors." J. Nanotechnology 23, 305206 (2012).

L. A. Stephey and T. R. Moore. "Experimental investigation of an American five-string banjo." J. Acoust. Soc. Am. 124, 3276 (2008).

For other publications please see Laurie's Google Scholar profile

Invited Presentations

L. Stephey, O. Schmitz, D. T. Anderson, F. S. B. Anderson, G. A. Wurden, F. Effenberg, H. Frerichs, A. Bader, R. Koenig, C. Biedermann, M. Krychowiak, P. Kornejew, J. Harris, E. Unterberg, and the W7-X Team. "Control of neutral particle fueling and exhaust by plasma edge topology optimization in Wendelstein 7-X and HSX." APS DPP 2016 Invited Talk Abstract JI3.00001.