Cross-calibrating spatial positions of light-viewing diagnostics using plasma edge sweeps in DIII-D

Autor:	P. Gohil, W. M. Solomon, Richard J. Groebner, Keith H. Burrell, D. H. Kaplan
Rok vydání:	2003
Předmět:	Physics Nonlinear system Toroid Optics DIII-D business.industry Calibration Chord (music) Plasma diagnostics Light emission business Instrumentation Magnetic field
Zdroj:	Review of Scientific Instruments. 74:5084-5089
ISSN:	1089-7623 0034-6748
Popis:	An experimental technique is presented that permits diagnostics viewing light from the plasma edge to be spatially calibrated relative to one another. By sweeping the plasma edge, each chord of each diagnostic sweeps out a portion of the light emission profile. A nonlinear least-squares fit to such data provides superior cross-calibration of diagnostics located at different toroidal locations compared with simple surveying. Another advantage of the technique is that it can be used to monitor the position of viewing chords during an experimental campaign to ensure that alignment does not change over time. Moverover, should such a change occur, the data can still be cross-calibrated and its usefulness retained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3d3fd602c950b54e9ac0eff11800a5c8 https://doi.org/10.1063/1.1623622 Zobrazit plný text záznamu