NSTX-U Digital Coil Protection System integration with existing Plasma Control System

K. G. Erickson; S. P. Gerhardt; J. E. Lawson; H. Schneider; P. Sichta; T. Stevenson; G. J. Tchilinguirian

doi:10.1109/SOFE.2015.7482291

NSTX-U Digital Coil Protection System integration with existing Plasma Control System

K. G. Erickson, S. P. Gerhardt, J. E. Lawson, H. Schneider, P. Sichta, T. Stevenson, G. J. Tchilinguirian

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

The National Spherical Torus Experiment (NSTX) is currently finishing a multi-year upgrade (NSTX-U) that vastly increased the capabilities of the system. These upgrades required an improved coil protection system to prevent immediate damage as well as fatigue over time to the magnetic coils that control the plasma. Because the action taken by the DCPS affects many other systems, NSTX-U will additionally add a second DCPS with a modified failure path that operates with tighter limits. This second DCPS will execute the same algorithms, but will always trigger a fault first due to the difference in limit values. The action taken will be somewhat less drastic compared to the failure mode of the initial DCPS. The second DCPS runs the same protection algorithms, but does so using the Plasma Control System (PCS) computer and associated input data stream. The modularity of the DCPS framework allows a single pluggable software package to control the source of input data while keeping all remaining software functionality identical. The binary itself is compiled once yet runs in two physically separate computers using different limiting values, allowing not just reuse of code, but also reuse of validation and verification testing. This integration enables future direct coupling between the DCPS and PCS, and conceivably to other heterogeneous platforms as they become available.

Original language	English (US)
Title of host publication	2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479982646
DOIs	https://doi.org/10.1109/SOFE.2015.7482291
State	Published - May 31 2016
Event	26th IEEE Symposium on Fusion Engineering, SOFE 2015 - Austin, United States Duration: May 31 2015 → Jun 4 2015

Publication series

Name	Proceedings - Symposium on Fusion Engineering
Volume	2016-May

Other

Other	26th IEEE Symposium on Fusion Engineering, SOFE 2015
Country/Territory	United States
City	Austin
Period	5/31/15 → 6/4/15

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

Keywords

control
Linux
Protection
Real-Time

Access to Document

10.1109/SOFE.2015.7482291

Cite this

Erickson, K. G., Gerhardt, S. P., Lawson, J. E., Schneider, H., Sichta, P., Stevenson, T., & Tchilinguirian, G. J. (2016). NSTX-U Digital Coil Protection System integration with existing Plasma Control System. In 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015 Article 7482291 (Proceedings - Symposium on Fusion Engineering; Vol. 2016-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SOFE.2015.7482291

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title = "NSTX-U Digital Coil Protection System integration with existing Plasma Control System",

abstract = "The National Spherical Torus Experiment (NSTX) is currently finishing a multi-year upgrade (NSTX-U) that vastly increased the capabilities of the system. These upgrades required an improved coil protection system to prevent immediate damage as well as fatigue over time to the magnetic coils that control the plasma. Because the action taken by the DCPS affects many other systems, NSTX-U will additionally add a second DCPS with a modified failure path that operates with tighter limits. This second DCPS will execute the same algorithms, but will always trigger a fault first due to the difference in limit values. The action taken will be somewhat less drastic compared to the failure mode of the initial DCPS. The second DCPS runs the same protection algorithms, but does so using the Plasma Control System (PCS) computer and associated input data stream. The modularity of the DCPS framework allows a single pluggable software package to control the source of input data while keeping all remaining software functionality identical. The binary itself is compiled once yet runs in two physically separate computers using different limiting values, allowing not just reuse of code, but also reuse of validation and verification testing. This integration enables future direct coupling between the DCPS and PCS, and conceivably to other heterogeneous platforms as they become available.",

keywords = "control, Linux, Protection, Real-Time",

author = "Erickson, \{K. G.\} and Gerhardt, \{S. P.\} and Lawson, \{J. E.\} and H. Schneider and P. Sichta and T. Stevenson and Tchilinguirian, \{G. J.\}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 26th IEEE Symposium on Fusion Engineering, SOFE 2015 ; Conference date: 31-05-2015 Through 04-06-2015",

year = "2016",

month = may,

day = "31",

doi = "10.1109/SOFE.2015.7482291",

language = "English (US)",

series = "Proceedings - Symposium on Fusion Engineering",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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}

Erickson, KG , Gerhardt, SP, Lawson, JE, Schneider, H, Sichta, P, Stevenson, T & Tchilinguirian, GJ 2016, NSTX-U Digital Coil Protection System integration with existing Plasma Control System. in 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015., 7482291, Proceedings - Symposium on Fusion Engineering, vol. 2016-May, Institute of Electrical and Electronics Engineers Inc., 26th IEEE Symposium on Fusion Engineering, SOFE 2015, Austin, United States, 5/31/15. https://doi.org/10.1109/SOFE.2015.7482291

NSTX-U Digital Coil Protection System integration with existing Plasma Control System. / Erickson, K. G.; Gerhardt, S. P.; Lawson, J. E. et al.
2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015. Institute of Electrical and Electronics Engineers Inc., 2016. 7482291 (Proceedings - Symposium on Fusion Engineering; Vol. 2016-May).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - The National Spherical Torus Experiment (NSTX) is currently finishing a multi-year upgrade (NSTX-U) that vastly increased the capabilities of the system. These upgrades required an improved coil protection system to prevent immediate damage as well as fatigue over time to the magnetic coils that control the plasma. Because the action taken by the DCPS affects many other systems, NSTX-U will additionally add a second DCPS with a modified failure path that operates with tighter limits. This second DCPS will execute the same algorithms, but will always trigger a fault first due to the difference in limit values. The action taken will be somewhat less drastic compared to the failure mode of the initial DCPS. The second DCPS runs the same protection algorithms, but does so using the Plasma Control System (PCS) computer and associated input data stream. The modularity of the DCPS framework allows a single pluggable software package to control the source of input data while keeping all remaining software functionality identical. The binary itself is compiled once yet runs in two physically separate computers using different limiting values, allowing not just reuse of code, but also reuse of validation and verification testing. This integration enables future direct coupling between the DCPS and PCS, and conceivably to other heterogeneous platforms as they become available.

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Erickson KG , Gerhardt SP, Lawson JE, Schneider H, Sichta P, Stevenson T et al. NSTX-U Digital Coil Protection System integration with existing Plasma Control System. In 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015. Institute of Electrical and Electronics Engineers Inc. 2016. 7482291. (Proceedings - Symposium on Fusion Engineering). doi: 10.1109/SOFE.2015.7482291

NSTX-U Digital Coil Protection System integration with existing Plasma Control System

Abstract

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All Science Journal Classification (ASJC) codes

Keywords

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