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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

The JET upgraded toroidal Alfven Eigenmode Diagnostic System

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Autor(es):
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Dowson, S. [1, 2] ; Dorling, S. [1, 2] ; Sheikh, H. K. [1, 2] ; Blackman, T. [1, 2] ; Jones, G. [1, 2] ; Goodyear, A. [1, 2] ; Puglia, P. [1, 3] ; Blanchard, P. [1, 3] ; Fasoli, A. [1, 3] ; Testa, D. [1, 3] ; Fil, N. [4, 1] ; Aslanyan, V [4, 1] ; Porkolab, M. [4, 1] ; Woskov, P. [4, 1] ; Pires De Sa, W. [5, 1] ; Galvao, R. [5, 1] ; Ruchko, L. [5, 1] ; Figueiredo, J. [1, 6, 7] ; Von Thun, C. Perez [1, 6] ; Contributors, JET
Número total de Autores: 20
Afiliação do(s) autor(es):
[1] EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon - England
[2] CCFE, Culham Sci Ctr, Abingdon OX14 3DB, Oxon - England
[3] Ecole Polytech Fed Lausanne, Swiss Plasma Ctr, Lausanne - Switzerland
[4] MIT PSFC, 175 Albany St, Cambridge, MA 02139 - USA
[5] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil
[6] EUROfus PMU, Culham Sci Ctr, Abingdon OX14 3DB, Oxon - England
[7] Univ Lisbon, Inst Plasmas & Fusao Nucl, Inst Super Tecn, Lisbon - Portugal
Número total de Afiliações: 7
Tipo de documento: Artigo Científico
Fonte: FUSION ENGINEERING AND DESIGN; v. 146, n. B, SI, p. 2639-2643, SEP 2019.
Citações Web of Science: 0
Resumo

The Alfven 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. (AU)

Processo FAPESP: 11/50773-0 - Núcleo de excelência em física e aplicações de plasmas
Beneficiário:Ricardo Magnus Osório Galvão
Linha de fomento: Auxílio à Pesquisa - Temático