The JET upgraded toroidal Alfvén Eigenmode Diagnostic System

Dowson, S.; Dorling, S.; Sheikh, H. K.; Blackman, T.; Jones, G.; Goodyear, A.; Puglia, P.; Blanchard, P.; Fasoli, A.; Testa, D.; Fil, N.; Aslanyan, V.; Porkolab, M.; Woskov, P.; De Sa, W. Pires; Galvao, R.; Ruchko, L.; Figueiredo, J.; Von Thun, C. Perez

doi:10.1016/j.fusengdes.2019.04.064

Title: The JET upgraded toroidal Alfvén Eigenmode Diagnostic System

Abstract

The Alfvén Eigenmode Active Diagnostic system (AEAD) has undergone a major upgrade and redesign to provide a state-of-the-art excitation and real-time detection system for JET. The new system consists of individual 4 kW amplifiers allowing for increased current, separate excitation and real time control of relative phasing between antenna currents. The amplifiers have a frequency range of 10–1000 kHz, divided into various frequency bands by external matching filters. Due to the varying transmission line impedance throughout the frequency range, the amplifiers were designed with a very high resilience to reflected power. The existing amplifier control electronics have been replaced with a digital control system incorporating a National Instruments platform and Field Programmable Gate Array (FPGA) modules for frequency, gain and phase control with a frequency and phase resolution of less than 1 kHz and 1 degree respectively. Complementing the digital control system is the Protection and Control System, which utilizes Field Programmable Analog Arrays (FPAAs) and an array of electronic devices to monitor and control the AEAD. New capabilities such as independent antenna current/phase control, allow for improved excitation control, better definition of antenna spectrum combined with enhanced system reliability. This paper will review the new AEAD system, its uniquemore »« less

Authors:

Dowson, S. ^[1]; Dorling, S. ^[1]; Sheikh, H. K. ^[1]; Blackman, T. ^[1]; Jones, G. ^[1]; Goodyear, A. ^[1]; Puglia, P. ^[2]; Blanchard, P. ^[2]; Fasoli, A. ^[2]; Testa, D. ^[2]; Fil, N. ^[3]; Aslanyan, V. ^[3]; Porkolab, M. ^[3]; Woskov, P. ^[3];

^[4];

^[4]; Ruchko, L. ^[4]; Figueiredo, J. ^[5]; Von Thun, C. Perez ^[6]

Culham Science Centre, Abingdon (United Kingdom). Culham Centre for Fusion Energy (CCFE). EUROfusion Consortium. JET
EPFL Swiss Plasma Center, Lausanne (Switzerland); Culham Science Centre, Abingdon (United Kingdom). EUROfusion Consortium. JET
MIT PSFC, Cambridge, MA (United States); Culham Science Centre, Abingdon (United Kingdom). EUROfusion Consortium. JET
Univ. de São Paulo (Brazil); Culham Science Centre, Abingdon (United Kingdom). EUROfusion Consortium. JET
Culham Science Centre, Abingdon (United Kingdom). EUROfusion PMU. EUROfusion Consortium. JET; Univ. of Lisbon (Portugal)
Culham Science Centre, Abingdon (United Kingdom). EUROfusion PMU. EUROfusion Consortium. JET

Publication Date:: Thu Apr 25 00:00:00 EDT 2019

Research Org.:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

OSTI Identifier:: 1610439

Alternate Identifier(s):: OSTI ID: 1874747

Grant/Contract Number:: FG02-99ER54563

Resource Type:: Accepted Manuscript

Journal Name:: Fusion Engineering and Design

Additional Journal Information:: Journal Volume: 146; Journal Issue: B; Journal ID: ISSN 0920-3796

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; JET; TAE; FPGA; FPAA; AEAD; Alfvén

Citation Formats


                    Dowson, S., Dorling, S., Sheikh, H. K., Blackman, T., Jones, G., Goodyear, A., Puglia, P., Blanchard, P., Fasoli, A., Testa, D., Fil, N., Aslanyan, V., Porkolab, M., Woskov, P., De Sa, W. Pires, Galvao, R., Ruchko, L., Figueiredo, J., and Von Thun, C. Perez. The JET upgraded toroidal Alfvén Eigenmode Diagnostic System.  United States: N. p., 2019. 
Web.  doi:10.1016/j.fusengdes.2019.04.064.

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                    Dowson, S., Dorling, S., Sheikh, H. K., Blackman, T., Jones, G., Goodyear, A., Puglia, P., Blanchard, P., Fasoli, A., Testa, D., Fil, N., Aslanyan, V., Porkolab, M., Woskov, P., De Sa, W. Pires, Galvao, R., Ruchko, L., Figueiredo, J., & Von Thun, C. Perez. The JET upgraded toroidal Alfvén Eigenmode Diagnostic System.  United States.  https://doi.org/10.1016/j.fusengdes.2019.04.064

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                    Dowson, S., Dorling, S., Sheikh, H. K., Blackman, T., Jones, G., Goodyear, A., Puglia, P., Blanchard, P., Fasoli, A., Testa, D., Fil, N., Aslanyan, V., Porkolab, M., Woskov, P., De Sa, W. Pires, Galvao, R., Ruchko, L., Figueiredo, J., and Von Thun, C. Perez. Thu .  
"The JET upgraded toroidal Alfvén Eigenmode Diagnostic System".  United States.  https://doi.org/10.1016/j.fusengdes.2019.04.064.  https://www.osti.gov/servlets/purl/1610439.

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@article{osti_1610439,

  title        = {The JET upgraded toroidal Alfvén Eigenmode Diagnostic System},

  author       = {Dowson, S. and Dorling, S. and Sheikh, H. K. and Blackman, T. and Jones, G. and Goodyear, A. and Puglia, P. and Blanchard, P. and Fasoli, A. and Testa, D. and Fil, N. and Aslanyan, V. and Porkolab, M. and Woskov, P. and De Sa, W. Pires and Galvao, R. and Ruchko, L. and Figueiredo, J. and Von Thun, C. Perez},

  abstractNote = {The Alfvén Eigenmode Active Diagnostic system (AEAD) has undergone a major upgrade and redesign to provide a state-of-the-art excitation and real-time detection system for JET. The new system consists of individual 4 kW amplifiers allowing for increased current, separate excitation and real time control of relative phasing between antenna currents. The amplifiers have a frequency range of 10–1000 kHz, divided into various frequency bands by external matching filters. Due to the varying transmission line impedance throughout the frequency range, the amplifiers were designed with a very high resilience to reflected power. The existing amplifier control electronics have been replaced with a digital control system incorporating a National Instruments platform and Field Programmable Gate Array (FPGA) modules for frequency, gain and phase control with a frequency and phase resolution of less than 1 kHz and 1 degree respectively. Complementing the digital control system is the Protection and Control System, which utilizes Field Programmable Analog Arrays (FPAAs) and an array of electronic devices to monitor and control the AEAD. New capabilities such as independent antenna current/phase control, allow for improved excitation control, better definition of antenna spectrum combined with enhanced system reliability. This paper will review the new AEAD system, its unique capabilities and improvements over the previous diagnostic system.},

  doi          = {10.1016/j.fusengdes.2019.04.064},

  journal      = {Fusion Engineering and Design},

  number       = B,

  volume       = 146,

  place        = {United States},

  year         = {Thu Apr 25 00:00:00 EDT 2019},

  month        = {Thu Apr 25 00:00:00 EDT 2019}

}

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Works referenced in this record:

The JET Alfvén Eigenmode Local Manager for the real-time detection and tracking of MHD instabilities
journal, December 2010

Testa, D.; Carfantan, H.; Goodyear, A.
EPL (Europhysics Letters), Vol. 92, Issue 5
DOI: 10.1209/0295-5075/92/50001

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Title: The JET upgraded toroidal Alfvén Eigenmode Diagnostic System

Abstract

Citation Formats

The JET Alfvén Eigenmode Local Manager for the real-time detection and tracking of MHD instabilities journal, December 2010

The JET Alfvén Eigenmode Local Manager for the real-time detection and tracking of MHD instabilities
journal, December 2010