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TJ-II:Fast ion loss probe: Difference between revisions
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A mobile luminescent probe has been developed to detect fast ion losses and suprathermal ions escaping from the plasma of the [[TJ-II|TJ-II stellarator device]]. The priorities for its design have been flexibility for probe positioning, ease of maintenance, and detector sensitivity. It employs a coherent fiber bundle to relay, to the outside of the vacuum chamber, ionoluminescence images produced by the ions that impinge, after entering the detector head through a pinhole aperture, onto a screen of luminescent material. Ionoluminescence light detection is accomplished by a charge-coupled device camera and by a photomultiplier, both of which are optically coupled to the in-vacuum fiber bundle head by means of a standard optical setup. | A mobile luminescent probe has been developed to detect fast ion losses and suprathermal ions escaping from the plasma of the [[TJ-II|TJ-II stellarator device]]. The priorities for its design have been flexibility for probe positioning, ease of maintenance, and detector sensitivity. It employs a coherent fiber bundle to relay, to the outside of the vacuum chamber, ionoluminescence images produced by the ions that impinge, after entering the detector head through a pinhole aperture, onto a screen of luminescent material. Ionoluminescence light detection is accomplished by a charge-coupled device camera and by a photomultiplier, both of which are optically coupled to the in-vacuum fiber bundle head by means of a standard optical setup. | ||
<ref> | <ref>C. Burgos et al, ''Conceptual designs of fast-ion loss detectors for the TJ-II stellarator'', [[doi:10.1063/1.1534911|Rev. Sci. Instrum. '''74''' (2003) 1861]]</ref> | ||
<ref> | <ref>D. Jiménez-Rey et al, ''A flexible luminescent probe to monitor fast ion losses at the edge of the TJ-II stellarator'', [[doi:10.1063/1.2979013|Rev. Sci. Instrum. '''79''' (2008) 093511]]</ref> | ||
The probe is located in [[TJ-II:Sectors|sector]] D3, at φ = -65º. | The probe is located in [[TJ-II:Sectors|sector]] D3, at φ = -65º. | ||