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Diagnostics: Difference between revisions
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Diagnostics are the eyes and ears of fusion reactors. They return vital parameters such as the temperature, the density, the impurity content, the magnetic field et cetera. | Diagnostics are the eyes and ears of fusion reactors. They return vital parameters such as the temperature, the density, the impurity content, the magnetic field et cetera. | ||
Below | A distinction can be made between ''active'' and ''passive'' diagnostics (the former requiring the injection of light beams, particles, or probes, while the latter is based on the observation of radiation and particles emitted spontaneously by the plasma). | ||
Below follows a list of different diagnostics, together with their main measurement parameters. | |||
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|Electron Cyclotron Emission || ECE, ECEi || Electron temperature <math>T_e</math>, electron temperature fluctuations (turbulence) <math>\tilde{T}_e</math> | |Electron Cyclotron Emission || ECE, ECEi || Electron temperature <math>T_e</math>, electron temperature fluctuations (turbulence) <math>\tilde{T}_e</math> | ||
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|Soft X-Ray Emission || SXR || A combination of electron temperature <math>T_e</math>, electron density <math>n_e</math>, and effective charge <math>Z_{eff}</math> | |||
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|Mirnov coils, pickup coils || - || magnetic field components and fluctuations (outside plasma) | |Mirnov coils, pickup coils || - || magnetic field components and fluctuations (outside plasma) | ||