TANAKA, Kenji

A collective Thomson scattering (CTS) diagnostic with a ±3 GHz band around a 77 GHz gyrotron probe beam is to measure the velocity distribution of bulk and fast ions in high-temperature plasmas.

A collective Thomson scattering (CTS) diagnostic with a ±3 GHz band around a 77 GHz gyrotron probe beam is to measure the velocity distribution of bulk and fast ions in high-temperature plasmas.

A collective Thomson scattering (CTS) diagnostic with a ±3 GHz band around a 77 GHz gyrotron probe beam is to measure the velocity distribution of bulk and fast ions in high-temperature plasmas.

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

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

FIR laser interferometer measures the line averaged electron density and the electron density profile. Laser source: CH3OH laser (119um, 100mW) Michelson & Heterodyne interferometer (beat freq. 1 MHz). Time resolution: 10us.

Line integrated electron density (neL) and its profile calculated from raw data of FIR laser interferometers, FIR1, FIR2, and FIR3. Time resolution is basically 10 milli-second, and the time axis array is stored in the last, i.e. 14th chann…

Line-integrated electron density at the central chord measured by FIR laser interferometer.

Line-integrated electron density at the central chord measured by FIR laser interferometer.

Line-integrated electron density at the central chord measured by FIR laser interferometer.

Line-integrated electron density at the central chord measured by FIR laser interferometer.

Line-integrated electron density at the central chord measured by FIR laser interferometer.

Line-integrated electron density at the central chord measured by FIR laser interferometer.

Line-integrated electron density at the central chord measured by FIR laser interferometer.

Line-integrated electron density at the central chord measured by FIR laser interferometer.

Line-integrated electron density at the central chord measured by FIR laser interferometer.

The timing of the first fringe jump in the far-infrared (FIR) laser interferometer. When the phase change suddenly jumpes by more than one fringe (2π), the interferometer can no longer continuously track the phase shift value, and this phen…

The timing of the first fringe jump in the far-infrared (FIR) laser interferometer. When the phase change suddenly jumpes by more than one fringe (2π), the interferometer can no longer continuously track the phase shift value, and this phen…

The timing of the first fringe jump in the far-infrared (FIR) laser interferometer. When the phase change suddenly jumpes by more than one fringe (2π), the interferometer can no longer continuously track the phase shift value, and this phen…

The timing of the first fringe jump in the far-infrared (FIR) laser interferometer. When the phase change suddenly jumpes by more than one fringe (2π), the interferometer can no longer continuously track the phase shift value, and this phen…

The timing of the first fringe jump in the far-infrared (FIR) laser interferometer. When the phase change suddenly jumpes by more than one fringe (2π), the interferometer can no longer continuously track the phase shift value, and this phen…

The timing of the first fringe jump in the far-infrared (FIR) laser interferometer. When the phase change suddenly jumpes by more than one fringe (2π), the interferometer can no longer continuously track the phase shift value, and this phen…