TJ-II:Impurity density and potential asymmetries: Difference between revisions

TJ-II:Impurity density and potential asymmetries (view source)

Revision as of 16:49, 24 January 2017

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→‎Description of required resources

Jose.regana

124

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 == Description of required resources ==
-Required resources:
-* Number of plasma discharges or days of operation:
+The required signals to perform the analysis are:
-* Essential diagnostic systems:
-* Type of plasmas (heating configuration):
+* The time evolution of the plasma emissivity radial profile via tomographic reconstructions of the bolometry system signals.
-* Specific requirements on wall conditioning if any:
+* The time evolution of the plasma floating potential at the outer core region (<math>r/a\sim 0.9</math>).
-* External users: need a local computer account for data access: yes/no
+* The time evolution of the line-averaged density <math>\left<n_e(t)\right></math> with interferometry.
-* Any external equipment to be integrated? Provide description and integration needs:
+* 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 ==