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Design of a diagnostic residual gas analyzer for the ITER divertor.
- Source :
-
Fusion Engineering & Design . Oct2015, Vol. 96/97, p803-807. 5p. - Publication Year :
- 2015
-
Abstract
- One of the ITER diagnostics having reached an advanced design stage is a diagnostic RGA for the divertor, i.e. residual gas analysis system for the ITER divertor, which is intended to sample the divertor pumping duct region during the plasma pulse and to have a response time compatible with plasma particle and impurity lifetimes in the divertor region. Main emphasis is placed on helium (He) concentration in the ducts, as well as the relative concentration between the hydrogen isotopes (mainly in the form of diatomic molecules of H, D, and T). Measurement of the concentration of radiative gases, such as neon (Ne) and nitrogen (N 2 ), is also intended. Numerical modeling of the gas flow from the sampled region to the cluster of analysis sensors, through a long (∼8 m long, ∼110 mm diameter) sampling pipe originating from a pressure reducing orifice, confirm that the desired response time (∼1 s for He or D 2 ) is achieved with the present design. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FUSION reactor divertors
*HYDROGEN isotopes
*PLASMA diagnostics
*NUCLEAR fusion
Subjects
Details
- Language :
- English
- ISSN :
- 09203796
- Volume :
- 96/97
- Database :
- Academic Search Index
- Journal :
- Fusion Engineering & Design
- Publication Type :
- Academic Journal
- Accession number :
- 109980590
- Full Text :
- https://doi.org/10.1016/j.fusengdes.2015.04.053