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TJ-II:Impurity density and potential asymmetries: Difference between revisions
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TJ-II:Impurity density and potential asymmetries (view source)
Revision as of 16:49, 24 January 2017
, 24 January 2017→Description of required resources
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== Description of required resources == | == Description of required resources == | ||
* | The required signals to perform the analysis are: | ||
* | |||
* | * The time evolution of the plasma emissivity radial profile via tomographic reconstructions of the bolometry system signals. | ||
* | * The time evolution of the plasma floating potential at the outer core region (<math>r/a\sim 0.9</math>). | ||
* | * The time evolution of the line-averaged density <math>\left<n_e(t)\right></math> with interferometry. | ||
* | * The radial profiles of electron density <math>n_{e}(r, t_0)</math> and temperature at one time instant <math>t_0</math> using Thomson Scattering (TS). | ||
* The time evolution of the electron temperature profile <math>T_{e}(r,t)</math> with Electron Cyclotron Emission (ECE), when available, calibrated with TS. | |||
* The time evolution of the ion temperature in the core and in an outer radial position <math>T_i(r/a\sim 0.2,t)</math> and <math>T_i(r/a\sim 0.8,t)</math> with the Neutral Particle Analyzer (NPA). | |||
* The time evolution of the radial electric field at the mid-outer resion (<math>r/a\sim 0.7-0.8</math>) with reflectometry. | |||
* The time evolution of the electrostatic potential in the mid-outer region <math>\Phi(r/a\sim0.7,t)</math> with the double Heavy Ion Beam Probe (HIBP). | |||
Other constraints regarding the desired experimental conditions are: | |||
* Good reproducibility of the plasma discharges to allow comparison across impurities and <math>Z</math>. Scannig <math>T_e</math> is also considered by the application of different ECH injected power. | |||
* Good stationarity of plasma parameters, hence preferably ECRH plasmas, at the instant where the impurities are injected in order to extract the stationary background emissivity from that produced by the injected impurity. | |||
== Preferred dates and degree of flexibility == | == Preferred dates and degree of flexibility == | ||