Plasma current extension experiments using the non-linear element and outer vertical field coil in the STOR-M iron core tokamak

2014 Fiscal Year Final Research Report

• Project/Area Number: 24561026
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: Tokai University
• Principal Investigator: MITARAI OSAMU 東海大学, 熊本教養教育センター, 教授 (00181925)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: スフェリカルトカマク / CSなし電流立ち上げ / 鉄心トカマク / 非線型飽和

Outline of Final Research Achievements

As it is difficult to set the central solenoid (CS) in a spherical tokamak due to limited space, it is necessary to start-up the plasma current without CS. We propose to use an iron core transformer to start-up the plasma current using the outer vertical field coil without CS. The plasma current start-up experiments have been conducted in STOR-M iron core tokamak after removing the CS.
It was successfully demonstrated that the plasma current start-up can be done by the outer vertical field coil without CS. Although this iron core transformer inevitably saturates, the plasma can be controlled during iron core saturation phase. These two experiments were the first demonstrations in the world.

Free Research Field

プラズマ核融合工学