2009 Fiscal Year Final Research Report

Simultaneous measurements of plasma pressure, rotation and current density profiles using Lithium beam probe

Research Project

Project/Area Number	19686056
Research Category	Grant-in-Aid for Young Scientists (A)
Allocation Type	Single-year Grants
Research Field	Nuclear fusion studies
Research Institution	Japan Atomic Energy Agency
Principal Investigator	KAMIYA Kensaku Japan Atomic Energy Agency, 核融合研究開発部門, 研究副主幹 (60360426)
Project Period (FY)	2007 – 2009
Keywords	プラズマ核融合 / 超精密計測 / リチウムビーム / ゼーマン偏光分光 / 境界輸送障壁
Research Abstract	Simultaneous measurements of the magnetic field pitch angle, ion temperature, rotation, electron density and its fluctuation in the plasma edge region are obtained by using Zeeman polarimetry, Charge eXchange Recombination Spectroscopy (CXRS) and Beam Emission Spectroscopy (BES) with a 10keV Li-beam probing system on JT-60U. The diagnostic has 20-ch viewing chords covering the plasma peripheral region of normalized minor radius r/a ~0.8-1 with a spatial resolution of up to ~1cm. The edge current density profile with the local peak at the plasma edge has been identified in the H-mode plasma, which is correlated with large pressure gradient in the pedestal region.

(6 results)