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>[http://link.aip.org/link/?RSINAK/74/1861/1 C. Burgos et al, ''Conceptual designs of fast-ion loss detectors for the TJ-II stellarator'', Rev. Sci. Instrum. '''74''' (2003) 1861]</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>[http://link.aip.org/link/?RSINAK/79/093511/1 D. Jiménez-Rey et al, ''A flexible luminescent probe to monitor fast ion losses at the edge of the TJ-II stellarator'', Rev. Sci. Instrum. '''79''' (2008) 093511]</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 &phi; = -65º.
The probe is located in [[TJ-II:Sectors|sector]] D3, at &phi; = -65º.

Latest revision as of 18:58, 3 April 2018

Fast Ion Loss Probe

A mobile luminescent probe has been developed to detect fast ion losses and suprathermal ions escaping from the plasma of the 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. [1] [2]

The probe is located in sector D3, at φ = -65º.

References

  1. ↑ C. Burgos et al, Conceptual designs of fast-ion loss detectors for the TJ-II stellarator, Rev. Sci. Instrum. 74 (2003) 1861
  2. ↑ D. Jiménez-Rey et al, A flexible luminescent probe to monitor fast ion losses at the edge of the TJ-II stellarator, Rev. Sci. Instrum. 79 (2008) 093511
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