A scalable real-time framework for Thomson scattering analysis: Application to NSTX-U
Abstract
A detailed description of a prototype setup for real-time (RT) Thomson scattering (TS) analysis is presented and implemented in the multi-point Thomson scattering (MPTS) diagnostic system at the National Spherical Torus Experiment Upgrade (NSTX-U). The data acquisition hardware was upgraded with RT capable electronics (RT-analog digital converters and a RT server) that allow for fast digitization of the laser pulse signal of eight radial MPTS channels. In addition, a new TS spectrum analysis software for a rapid calculation of electron temperature (Te) and electron density (ne) was developed. Testing of the RT hardware and data analysis software was successfully completed and benchmarked against the standard, post-shot evaluation. Timing tests were performed showing that the end-to-end processing time was reproducibly below 17 ms for the duration of at least 5 s, meeting a 60 Hz deadline by the laser pulse repetition rate over the length of a NSTX-U discharge. The presented RT framework is designed to be scalable in system size, i.e., incorporation of additional radial channels by solely adding additional RT capable hardware. In conclusion, it is scalable in its operation duration and was continuously running for up to 30 min, making it an attractive solution for machines with longmore »
- Authors:
-
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Princeton Univ., Princeton, NJ (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Princeton Univ., Princeton, NJ (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE
- Contributing Org.:
- NSTX-U Team
- OSTI Identifier:
- 1510312
- Alternate Identifier(s):
- OSTI ID: 1506151
- Grant/Contract Number:
- AC02-09Ch11466; SC0015480; SC0015878
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Review of Scientific Instruments
- Additional Journal Information:
- Journal Volume: 90; Journal Issue: 4; Journal ID: ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Laggner, F. M., Diallo, A., LeBlanc, B. P., Rozenblat, R., Tchilinguirian, G., and Kolemen, E. A scalable real-time framework for Thomson scattering analysis: Application to NSTX-U. United States: N. p., 2019.
Web. doi:10.1063/1.5088248.
Laggner, F. M., Diallo, A., LeBlanc, B. P., Rozenblat, R., Tchilinguirian, G., & Kolemen, E. A scalable real-time framework for Thomson scattering analysis: Application to NSTX-U. United States. https://doi.org/10.1063/1.5088248
Laggner, F. M., Diallo, A., LeBlanc, B. P., Rozenblat, R., Tchilinguirian, G., and Kolemen, E. Wed .
"A scalable real-time framework for Thomson scattering analysis: Application to NSTX-U". United States. https://doi.org/10.1063/1.5088248. https://www.osti.gov/servlets/purl/1510312.
@article{osti_1510312,
title = {A scalable real-time framework for Thomson scattering analysis: Application to NSTX-U},
author = {Laggner, F. M. and Diallo, A. and LeBlanc, B. P. and Rozenblat, R. and Tchilinguirian, G. and Kolemen, E.},
abstractNote = {A detailed description of a prototype setup for real-time (RT) Thomson scattering (TS) analysis is presented and implemented in the multi-point Thomson scattering (MPTS) diagnostic system at the National Spherical Torus Experiment Upgrade (NSTX-U). The data acquisition hardware was upgraded with RT capable electronics (RT-analog digital converters and a RT server) that allow for fast digitization of the laser pulse signal of eight radial MPTS channels. In addition, a new TS spectrum analysis software for a rapid calculation of electron temperature (Te) and electron density (ne) was developed. Testing of the RT hardware and data analysis software was successfully completed and benchmarked against the standard, post-shot evaluation. Timing tests were performed showing that the end-to-end processing time was reproducibly below 17 ms for the duration of at least 5 s, meeting a 60 Hz deadline by the laser pulse repetition rate over the length of a NSTX-U discharge. The presented RT framework is designed to be scalable in system size, i.e., incorporation of additional radial channels by solely adding additional RT capable hardware. In conclusion, it is scalable in its operation duration and was continuously running for up to 30 min, making it an attractive solution for machines with long discharges such as advanced, non-inductive tokamaks or stellarators.},
doi = {10.1063/1.5088248},
journal = {Review of Scientific Instruments},
number = 4,
volume = 90,
place = {United States},
year = {Wed Apr 10 00:00:00 EDT 2019},
month = {Wed Apr 10 00:00:00 EDT 2019}
}
Web of Science
Works referenced in this record:
Radial resolution enhancement of the NSTX Thomson scattering diagnostic
journal, October 2012
- LeBlanc, B. P.; Diallo, A.; Labik, G.
- Review of Scientific Instruments, Vol. 83, Issue 10
Equilibrium properties of spherical torus plasmas in NSTX
journal, November 2001
- Sabbagh, S. A.; Kaye, S. M.; Menard, J.
- Nuclear Fusion, Vol. 41, Issue 11
Operation of the NSTX Thomson scattering system
journal, March 2003
- LeBlanc, B. P.; Bell, R. E.; Johnson, D. W.
- Review of Scientific Instruments, Vol. 74, Issue 3
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
Control and acquisition for MAST Thomson scattering diagnostics
journal, August 2010
- Shibaev, S.; Naylor, G.; Scannell, R.
- Fusion Engineering and Design, Vol. 85, Issue 5
Real‐time digital control, data acquisition, and analysis system for the DIII‐D multipulse Thomson scattering diagnostic
journal, October 1990
- Greenfield, C. M.; Campbell, G. L.; Carlstrom, T. N.
- Review of Scientific Instruments, Vol. 61, Issue 10
Controlling marginally detached divertor plasmas
journal, May 2017
- Eldon, D.; Kolemen, E.; Barton, J. L.
- Nuclear Fusion, Vol. 57, Issue 6
APD detector electronics for the NSTX Thomson scattering system
journal, January 2001
- Johnson, D. W.; LeBlanc, B. P.; Long, D. L.
- Review of Scientific Instruments, Vol. 72, Issue 1
Design and performance of the Thomson scattering diagnostic on LHD
journal, January 2001
- Narihara, K.; Yamada, I.; Hayashi, H.
- Review of Scientific Instruments, Vol. 72, Issue 1
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
RABBIT: Real-time simulation of the NBI fast-ion distribution
journal, July 2018
- Weiland, M.; Bilato, R.; Dux, R.
- Nuclear Fusion, Vol. 58, Issue 8
Real-time capable modeling of neutral beam injection on NSTX-U using neural networks
journal, March 2019
- Boyer, M. D.; Kaye, S.; Erickson, K.
- Nuclear Fusion, Vol. 59, Issue 5
Overview of the physics and engineering design of NSTX upgrade
journal, July 2012
- Menard, J. E.; Gerhardt, S.; Bell, M.
- Nuclear Fusion, Vol. 52, Issue 8
High resolution Thomson scattering for Joint European Torus (JET)
journal, October 2004
- Pasqualotto, R.; Nielsen, P.; Gowers, C.
- Review of Scientific Instruments, Vol. 75, Issue 10
Performance of the Thomson scattering diagnostic on Helical Symmetry Experiment
journal, October 2004
- Zhai, K.; Anderson, F. S. B.; Willis, K.
- Review of Scientific Instruments, Vol. 75, Issue 10
Plasma boundary shape control and real-time equilibrium reconstruction on NSTX-U
journal, January 2018
- Boyer, M. D.; Battaglia, D. J.; Mueller, D.
- Nuclear Fusion, Vol. 58, Issue 3
Analytic formula for fully relativistic Thomson scattering spectrum
journal, November 1993
- Naito, O.; Yoshida, H.; Matoba, T.
- Physics of Fluids B: Plasma Physics, Vol. 5, Issue 11
Thomson scattering density calibration by Rayleigh and rotational Raman scattering on NSTX
journal, October 2008
- LeBlanc, B. P.
- Review of Scientific Instruments, Vol. 79, Issue 10
TFTR Thomson scattering system
journal, May 1985
- Johnson, D.; Dimock, D.; Grek, B.
- Review of Scientific Instruments, Vol. 56, Issue 5
Design and operation of the multipulse Thomson scattering diagnostic on DIII‐D (invited)
journal, October 1992
- Carlstrom, T. N.; Campbell, G. L.; DeBoo, J. C.
- Review of Scientific Instruments, Vol. 63, Issue 10
Bayesian modelling of fusion diagnostics
journal, May 2003
- Fischer, R.; Dinklage, A.; Pasch, E.
- Plasma Physics and Controlled Fusion, Vol. 45, Issue 7
Raman scattering — A possibility of calibrating laser scattering devices
journal, February 1977
- Röhr, H.
- Physics Letters A, Vol. 60, Issue 3
Current status of the LHD Thomson scattering system
journal, May 2012
- Yamada, I.; Narihara, K.; Funaba, H.
- Journal of Instrumentation, Vol. 7, Issue 05
Simple analytic form of the relativistic Thomson scattering spectrum
journal, October 1980
- Selden, A. C.
- Physics Letters A, Vol. 79, Issue 5-6
The Thomson scattering diagnostic at Wendelstein 7-X and its performance in the first operation phase
journal, October 2017
- Bozhenkov, S. A.; Beurskens, M.; Molin, A. Dal
- Journal of Instrumentation, Vol. 12, Issue 10
Plasma Diagnostics by Thomson Scattering of a Laser Beam
journal, June 1966
- Gerry, Edward T.; Rose, D. J.
- Journal of Applied Physics, Vol. 37, Issue 7
Prospects for the Thomson scattering system on NSTX-Upgrade
journal, October 2012
- Diallo, A.; LeBlanc, B. P.; Labik, G.
- Review of Scientific Instruments, Vol. 83, Issue 10
A pulse-burst laser system for Thomson scattering on NSTX-U
journal, October 2017
- Hartog, D. J. Den; Borchardt, M. T.; Holly, D. J.
- Journal of Instrumentation, Vol. 12, Issue 10
Multipulse Thomson scattering system for the National Spherical Torus Experiment
journal, January 1999
- Johnson, D.; Bretz, N.; LeBlanc, B.
- Review of Scientific Instruments, Vol. 70, Issue 1
A 130 point Nd:YAG Thomson scattering diagnostic on MAST
journal, October 2010
- Scannell, R.; Walsh, M. J.; Dunstan, M. R.
- Review of Scientific Instruments, Vol. 81, Issue 10
Improvements in the evaluation of Thomson scattering data on ASDEX upgrade
journal, January 2001
- Kurzan, B.; Murmann, H.; Salzmann, H.
- Review of Scientific Instruments, Vol. 72, Issue 1
Calibrations of the LHD Thomson scattering system
journal, August 2016
- Yamada, I.; Funaba, H.; Yasuhara, R.
- Review of Scientific Instruments, Vol. 87, Issue 11
Design of a new Nd:YAG Thomson scattering system for MAST
journal, October 2008
- Scannell, R.; Walsh, M. J.; Carolan, P. G.
- Review of Scientific Instruments, Vol. 79, Issue 10
The Thomson scattering system at Wendelstein 7-X
journal, September 2016
- Pasch, E.; Beurskens, M. N. A.; Bozhenkov, S. A.
- Review of Scientific Instruments, Vol. 87, Issue 11
Works referencing / citing this record:
Development of Real-Time Software for Thomson Scattering Analysis at NSTX-U
journal, September 2019
- Rozenblat, Roman; Kolemen, Egemen; Laggner, Florian M.
- Fusion Science and Technology, Vol. 75, Issue 8