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TJ-II:Lithium Beam: Difference between revisions
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TJ-II possesses a Lithium beam diagnostic. | [[File:Li_beam.jpg|300px|thumb|right|Lithium beam diagnostic setup. For a photo, see [[TJ-II:Helium Beam|Helium Beam]].]] | ||
[[TJ-II]] possesses a Lithium beam diagnostic. | |||
A thermal Li beam source, located at ∼ 80 cm from the observation region, has been used for the reconstruction of the SOL and edge parameters of the plasmas. | |||
A 16 channel photomultiplier array allowed the continuous recording of the radial profile of Li* emission. | |||
Detection of the Li* emission up to 8 cm inside the last closed [[Flux surface|flux surface]] (corresponding to ''r/a'' < 0.7) was possible. | |||
<ref>B. Brañas et al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', [[doi:10.1063/1.1319868|Rev. Sci. Instrum. '''72''', 602 (2001)]]</ref> | |||
<ref>F.L. Tabarés et al, ''Edge characteristics and global confinement of electron cyclotron resonance heated plasmas in the TJ-II Stellarator'', [[doi:10.1088/0741-3335/43/8/302|Plasma Phys. Control. Fusion '''43''' (2001) 1023-1037]]</ref> | |||
<ref>F.L. Tabarés et al, ''Density control and plasma edge characterisation of ECRH heated plasmas in the TJ-II stellarator'', [[doi:10.1016/S0022-3115(00)00490-6|Journal of Nuclear Materials '''290-293''' (2001) 748-752]]</ref> | |||
This diagnostic can no longer be used due to the use of Lithium for [[TJ-II:Plasma Wall Interaction|plasma wall conditioning]], creating an overwhelming amount of Li background emission. | |||
The system is located in [[TJ-II:Sectors|sector]] C7. | |||
The signals are stored in the [[TJ-II:Shot database|TJ-II database]] with the names 'LITIO1',...,'LITIO16'. | |||
== References == | == References == | ||
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