Abstract
Understanding the properties of materials when exposed to various plasma temperatures and fluxes is essential to the building and operating of fusion reactors. The Material Plasma Exposure eXperiment (MPEX) is an instrument currently being developed by the Department of Energy (DOE) for this purpose. MPEX is expected to come online in stages over the next five years. Proto-MPEX, the predecessor to MPEX, operated from 2014 to 2021, and was designed to understand the generation of plasma temperatures and fluxes at orders of magnitude below what will be obtained by MPEX. This work uses the recently developed stochastic neural network (SNN), a machine learning technique capable of operating under uncertainty to provide a surrogate model for the Proto-MPEX device. We demonstrate that SNN outperforms Bayesian neural network (BNN), a standard in the field of machine learning with uncertainty. The development of a robust surrogate of the Proto-MPEX will aid in the commissioning and operation of the MPEX device.
Original language | English |
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Title of host publication | Proceedings - 2022 IEEE International Conference on Big Data, Big Data 2022 |
Editors | Shusaku Tsumoto, Yukio Ohsawa, Lei Chen, Dirk Van den Poel, Xiaohua Hu, Yoichi Motomura, Takuya Takagi, Lingfei Wu, Ying Xie, Akihiro Abe, Vijay Raghavan |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 3402-3407 |
Number of pages | 6 |
ISBN (Electronic) | 9781665480451 |
DOIs | |
State | Published - 2022 |
Event | 2022 IEEE International Conference on Big Data, Big Data 2022 - Osaka, Japan Duration: Dec 17 2022 → Dec 20 2022 |
Publication series
Name | Proceedings - 2022 IEEE International Conference on Big Data, Big Data 2022 |
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Conference
Conference | 2022 IEEE International Conference on Big Data, Big Data 2022 |
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Country/Territory | Japan |
City | Osaka |
Period | 12/17/22 → 12/20/22 |
Funding
Notice of Copyright This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).The authors would like to thank the Proto-MPEX team at ORNL for their continued assistance in getting experimental data