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TJ-II:Real Time lithiatiation of TJII: Difference between revisions
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TJ-II:Real Time lithiatiation of TJII (view source)
Revision as of 10:08, 30 October 2019
, 30 October 2019→Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)
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Description: The NdYag laser used for Blow Off experiments will be focussed into the vacuum vessel opposite to it. The local power density will be controlled by a lens, in order to produce the right dose of Li compatible with normal plasma operation, similar to those induced by pellet injection now. Once this is achieved, a devoted Li source will be located near the wall to have a reproducible supply of Li. Eventually, a real Dollop injector will be developed. | Description: The NdYag laser used for Blow Off experiments will be focussed into the vacuum vessel opposite to it. The local power density will be controlled by a lens, in order to produce the right dose of Li compatible with normal plasma operation, similar to those induced by pellet injection now. Once this is achieved, a devoted Li source will be located near the wall to have a reproducible supply of Li. Eventually, a real Dollop injector will be developed. | ||
The transport of the injected Li ions will be monitored at a given toroidal distance from the injection through its emission and the time trace will be used to deduce the kinetic energy at this location. A simple thermalization model will be used to deduce the Ti value of the plasma.The resulting Ti value will be compared with other diagnostics (RFA, Doppler, NPA...) | |||
Requirements. High density plasmas (NBI) seem better suited due to a lower perturbation of the line density by the injected Li, although power balance considerations may suggest otherwise (ECRH). Frequent entrances to the TJII hall are foreseen at the beginning. Characteristic signatures of FW state (recycling, density control, impurities , radiation,..) will be monitored. | Requirements. High density plasmas (NBI) seem better suited due to a lower perturbation of the line density by the injected Li, although power balance considerations may suggest otherwise (ECRH). Frequent entrances to the TJII hall are foreseen at the beginning. Characteristic signatures of FW state (recycling, density control, impurities , radiation,..) will be monitored. | ||
== If applicable, International or National funding project or entity == | == If applicable, International or National funding project or entity == | ||