Results 31 to 40 of about 15,788,610 (233)
Accelerated version of NUBEAM capabilities in DIII-D using neural networks
, 2021 A neural network model of the effects of neutral beam injection on DIII-D has been developed. The training and testing data used by the model have been generated by the NUBEAM module of TRANSP for experimental discharges from the 2018 DIII-D campaign ...
S. Morosohk, M. Boyer, E. Schuster
semanticscholar +1 more source
Plasma rotation and rf heating in DIII-D [PDF]
AIP Conference Proceedings, 1999 In a variety of discharge conditions on DIII-D it is observed that rf electron heating reduces the toroidal rotation speed and core ion temperature. The rf heating can be with either fast wave or electron cyclotron heating and this effect is insensitive to the details of the launched toroidal wavenumber spectrum.
deGrassie, JS +9 more
openaire +2 more sources
Nuclear Fusion, 2023 The ability to identify underlying disruption precursors is key to disruption avoidance. In this paper, we present an integrated deep learning (DL) based model that combines disruption prediction with the identification of several disruption precursors ...
J.X. Zhu +6 more
doaj +1 more source
Machine learning for disruption warnings on Alcator C-Mod, DIII-D, and EAST
Nuclear Fusion, 2019 This paper reports on disruption prediction using a shallow machine learning method known as a random forest, trained on large databases containing only plasma parameters that are available in real-time on Alcator C-Mod, DIII-D, and EAST.
K. Montes +10 more
semanticscholar +1 more source
Plasma performance and operational space without ELMs in DIII-D [PDF]
Plasma Physics and Controlled Fusion, 2020 A database of DIII-D plasmas without edge-localized modes (ELMs) compares the operating space and plasma performance of stationary no-ELM regimes found in conventional tokamaks: ELM suppression with resonant magnetic perturbations (RMPs), quiescent H ...
C. Paz-Soldan, DIII-D Team
semanticscholar +1 more source
ELM sputter erosion modeling of a tungsten coated small angle slot divertor in DIII-D
Nuclear Fusion, 2023 We modeled plasma edge localized mode (ELM) sputter erosion for a Small Angle Slot divertor with a tungsten coated region (SAS-VW), designed for experiments in the DIII-D tokamak, and proposed for use in future advanced tokamaks.
J.N. Brooks +4 more
doaj +1 more source
A real-time machine learning-based disruption predictor in DIII-D
Nuclear Fusion, 2019 A disruption prediction algorithm, called disruption prediction using random forests (DPRF), has run in real-time in the DIII-D plasma control system (PCS) for more than 900 discharges.
C. Rea +4 more
semanticscholar +1 more source
Genetic diversity in RHD and RHCE genes among a selected Kenyan blood donor population. [PDF]
TransfusionAbstract Background Serologic typing for ABO and RhD is standard in transfusion services, with extended serology and genotyping performed to reduce red cell alloimmunization risk. In Kenya, RH typing is limited to RhD, and genotyping is unavailable. This study used RHD/RHCE genotyping to predict phenotypes and their distribution in a Kenyan blood donor
Sowah SA +8 more
europepmc +2 more sources
Observations of wall conditioning by means of boron powder injection in DIII-D H-mode plasmas
Nuclear Fusion, 2020 We report observations from the DIII-D tokamak indicating that boron (B) powder injection in tokamak plasmas improves wall conditions similarly to glow discharge boronization (GDB).
A. Bortolon +18 more
semanticscholar +1 more source
Performance, diagnostics, controls and plans for the gyrotron system on the DIII-D tokamak
EPJ Web of Conferences, 2012 The DIII-D ECH complex is being upgraded with three new depressed collector gyrotrons. The performance of the existing system has been very good.
Ponce D.M. +12 more
doaj +1 more source