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Active control of electron cyclotron emission radiometer channel frequencies for improved electron temperature measurements

Xie, R. ; Houshmandyar, S. ; Austin, M. E.

Review of scientific instruments, 2021-03, Vol.92 (3) [Periódico revisado por pares]

United States: American Institute of Physics (AIP)

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  • Título:
    Active control of electron cyclotron emission radiometer channel frequencies for improved electron temperature measurements
  • Autor: Xie, R. ; Houshmandyar, S. ; Austin, M. E.
  • Assuntos: cyclotron radiation ; electron cyclotron emission ; Fusion diagnostics ; linear filters ; OTHER INSTRUMENTATION ; plasma diagnostics ; real-time process ; tokamaks
  • É parte de: Review of scientific instruments, 2021-03, Vol.92 (3)
  • Notas: SC0010500; FG02-97ER54415; FC02-04ER54698
    USDOE Office of Science (SC), Fusion Energy Sciences (FES)
  • Descrição: As advanced scenarios are developed for tokamak operations, the demand for flexibility of the electron cyclotron emission (ECE) channels’ locations has increased. The tunable feature of yttrium iron garnet (YIG) filters provides this spatial flexibility. Here, we present a method of performing ECE measurements on fixed flux surfaces instead of fixed frequencies. This is achieved by adjusting YIG filters utilized in the intermediate frequency section to frequencies associated with flux surfaces in regions of interest during the discharge. Here, the key components are the application of tunable YIG filters and a control program that calculates the filter settings using flux information from real-time reconstruction equilibria (EFIT). This fast procedure facilitates Te measurements in regions of interest to investigate plasma dynamic behaviors.
  • Editor: United States: American Institute of Physics (AIP)
  • Idioma: Inglês
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