Effect of the vacuum vessel on magnetic measurements in TCABR tokamak

Autor:	E. A. Saettone, M Y Kucinski, Yu K Kuznetsov
Rok vydání:	2004
Předmět:	Physics Toroid Tokamak Field (physics) Quantitative Biology::Tissues and Organs Plasma Mechanics equipment and supplies Magnetic field law.invention Physics::Plasma Physics law Harmonics Eddy current Atomic physics Magnetohydrodynamics human activities Instrumentation
Zdroj:	Review of Scientific Instruments. 75:5038-5040
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1807001
Popis:	Magnetic diagnostics in fusion experiments can be strongly affected by eddy currents induced in the vacuum vessel and in-vessel conducting components. In the present work the effect of the eddy currents on magnetic measurements in the TCABR tokamak with nearly circular plasma shape and rectangular cross section of the vacuum vessel is discussed. A method to find the magnetic field generated by eddy currents, in reply to the magnetic field of plasma currents, is based on expansion of vacuum field in series of toroidal harmonics. The conclusion is that, if the sensors are placed near the vessel, the effect of the vessel is strong and it decreases substantially in the case of sensors located near the plasma boundary at the circular surface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::71cc8e021d4cf327239e7c9e5e50b6c0 https://doi.org/10.1063/1.1807001 Zobrazit plný text záznamu