KOBAYASHI, Masahiro

Studies of divertor heat and particle control have been conducted with a helical divertor magnetic structure In the Large Helical Device (LHD)

Studies of divertor heat and particle control have been conducted with a helical divertor magnetic structure In the Large Helical Device (LHD)

Measuring the divertor heat flux by two-dimensional (2D) thermography using Infrared (IR) camera

Divertor thermometers by using thermocouples (TCs) for divertor heat flux and temperature response analyses

Divertor thermometers by using thermocouples (TCs) for divertor heat flux and temperature response analyses

Divertor thermometers by using thermocouples (TCs) for divertor heat flux and temperature response analyses

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Fast Ionization Gauge (FIG) which is operational in a high magnetic field is installed on the LHD port to measure neutral gas pressure.

Fast Ionization Gauge (FIG) which is operational in a high magnetic field is installed on the LHD port to measure neutral gas pressure.

Fast scanning Langmuir probes to investigate one-dimensional distribution of edge plasma parameters and their fluctuation characteristics. Head is inserted from top to bottom with about 1 m/s insertion speed with moving distance of 50 cm.

Fast scanning Langmuir probes to investigate one-dimensional distribution of edge plasma parameters and their fluctuation characteristics. Head is inserted from top to bottom with about 1 m/s insertion speed with moving distance of 50 cm.

Fast scanning Langmuir probes to investigate one-dimensional distribution of edge plasma parameters and their fluctuation characteristics. Head is inserted from top to bottom with about 1 m/s insertion speed with moving distance of 50 cm.

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…

Langmuir probes on divertor plates to investigate divertor plasma parameters and fluctuation characteristics of ion flux near the divertor plates. Total 400 Langmuir probes embedded on 20 divertor plates on each of which 20 electrodes are a…