Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: eqtools: Modular, extensible, open-source, cross-machine Python tools for working with magnetic equilibria

Abstract

As plasma physics research for fusion energy transitions to an increasing emphasis on cross-machine collaboration and numerical simulation, it becomes increasingly important that portable tools be developed to enable data from diverse sources to be analyzed in a consistent manner. This paper presents eqtools, a modular, extensible, open-source toolkit implemented in the Python programming language for handling magnetic equilibria and associated data from tokamaks. eqtools provides a single interface for working with magnetic equilibrium data, both for handling derived quantities and mapping between coordinate systems, extensible to function with data from different experiments, data formats, and magnetic reconstruction codes, replacing the diverse, non-portable solutions currently in use. Moreover, while the open-source Python programming language offers a number of advantages as a scripting language for research purposes, the lack of basic tokamak-specific functionality has impeded the adoption of the language for regular use. Implementing equilibrium-mapping tools in Python removes a substantial barrier to new development in and porting legacy code into Python. In this paper, we introduce the design of the eqtools package and detail the workflow for usage and expansion to additional devices. Additionally, the implementation of a novel three-dimensional spline solution (in two spatial dimensions and in time) ismore » also detailed. Finally, verification and benchmarking for accuracy and speed against existing tools are detailed. Wider deployment of these tools will enable efficient sharing of data and software between institutions and machines as well as self-consistent analysis of the shared data.« less

Authors:
ORCiD logo [1];  [1];  [2]
+ Show Author Affiliations
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Cinch Financial, Boston, MA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Oak Ridge Associated Univ., Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1533697
Alternate Identifier(s):
OSTI ID: 1415654
Grant/Contract Number:  
FC02-99ER54512; AC05-06OR23100
Resource Type:
Accepted Manuscript
Journal Name:
Computer Physics Communications
Additional Journal Information:
Journal Volume: 210; Journal Issue: C; Journal ID: ISSN 0010-4655
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 97 MATHEMATICS AND COMPUTING; Plasma physics; Tokamaks; Magnetic equilibrium reconstruction; Data analysis

Citation Formats

Chilenski, M. A., Faust, I. C., and Walk, J. R. eqtools: Modular, extensible, open-source, cross-machine Python tools for working with magnetic equilibria. United States: N. p., 2016. Web. doi:10.1016/j.cpc.2016.09.011.
Copy to clipboard
Chilenski, M. A., Faust, I. C., & Walk, J. R. eqtools: Modular, extensible, open-source, cross-machine Python tools for working with magnetic equilibria. United States. https://doi.org/10.1016/j.cpc.2016.09.011
Copy to clipboard
Chilenski, M. A., Faust, I. C., and Walk, J. R. Wed . "eqtools: Modular, extensible, open-source, cross-machine Python tools for working with magnetic equilibria". United States. https://doi.org/10.1016/j.cpc.2016.09.011. https://www.osti.gov/servlets/purl/1533697.
Copy to clipboard
@article{osti_1533697,
title = {eqtools: Modular, extensible, open-source, cross-machine Python tools for working with magnetic equilibria},
author = {Chilenski, M. A. and Faust, I. C. and Walk, J. R.},
abstractNote = {As plasma physics research for fusion energy transitions to an increasing emphasis on cross-machine collaboration and numerical simulation, it becomes increasingly important that portable tools be developed to enable data from diverse sources to be analyzed in a consistent manner. This paper presents eqtools, a modular, extensible, open-source toolkit implemented in the Python programming language for handling magnetic equilibria and associated data from tokamaks. eqtools provides a single interface for working with magnetic equilibrium data, both for handling derived quantities and mapping between coordinate systems, extensible to function with data from different experiments, data formats, and magnetic reconstruction codes, replacing the diverse, non-portable solutions currently in use. Moreover, while the open-source Python programming language offers a number of advantages as a scripting language for research purposes, the lack of basic tokamak-specific functionality has impeded the adoption of the language for regular use. Implementing equilibrium-mapping tools in Python removes a substantial barrier to new development in and porting legacy code into Python. In this paper, we introduce the design of the eqtools package and detail the workflow for usage and expansion to additional devices. Additionally, the implementation of a novel three-dimensional spline solution (in two spatial dimensions and in time) is also detailed. Finally, verification and benchmarking for accuracy and speed against existing tools are detailed. Wider deployment of these tools will enable efficient sharing of data and software between institutions and machines as well as self-consistent analysis of the shared data.},
doi = {10.1016/j.cpc.2016.09.011},
journal = {Computer Physics Communications},
number = C,
volume = 210,
place = {United States},
year = {Wed Sep 28 00:00:00 EDT 2016},
month = {Wed Sep 28 00:00:00 EDT 2016}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.cpc.2016.09.011
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

Reconstruction of current profile parameters and plasma shapes in tokamaks
journal, November 1985

The NumPy Array: A Structure for Efficient Numerical Computation
journal, March 2011

  • van der Walt, Stéfan; Colbert, S. Chris; Varoquaux, Gaël
  • Computing in Science & Engineering, Vol. 13, Issue 2
  • DOI: 10.1109/MCSE.2011.37

Diagnostic Systems on Alcator C-Mod
journal, April 2007

  • Basse, N. P.; Dominguez, A.; Edlund, E. M.
  • Fusion Science and Technology, Vol. 51, Issue 3
  • DOI: 10.13182/FST07-A1434

High-resolution edge Thomson scattering measurements on the Alcator C-Mod tokamak
journal, January 2001

  • Hughes, J. W.; Mossessian, D. A.; Hubbard, A. E.
  • Review of Scientific Instruments, Vol. 72, Issue 1
  • DOI: 10.1063/1.1319367

MDS plus data acquisition system
journal, January 1997

  • Stillerman, J. A.; Fredian, T. W.; Klare, K. A.
  • Review of Scientific Instruments, Vol. 68, Issue 1
  • DOI: 10.1063/1.1147719

Thomson scattering upgrades on Alcator C-Mod
journal, March 2003

  • Hughes, J. W.; Mossessian, D.; Zhurovich, K.
  • Review of Scientific Instruments, Vol. 74, Issue 3
  • DOI: 10.1063/1.1532764

Tricubic interpolation in three dimensions
journal, January 2005

  • Lekien, F.; Marsden, J.
  • International Journal for Numerical Methods in Engineering, Vol. 63, Issue 3
  • DOI: 10.1002/nme.1296
    Sort by:
    [ × clear filter / sort ]

    Works referencing / citing this record:

    On the importance of model selection when inferring impurity transport coefficient profiles
    journal, November 2019

    • Chilenski, M. A.; Greenwald, M.; Marzouk, Y.
    • Plasma Physics and Controlled Fusion, Vol. 61, Issue 12
    • DOI: 10.1088/1361-6587/ab4e69
      Sort by:
      [ × clear filter / sort ]

      Similar Records in DOE PAGES and OSTI.GOV collections: