TAKEMURA, Yuki

Line integrated electron density and its profile measured by the far-infrared (FIR) laser interferometer, with the sampling rate of 1 micro-second (0.001 ms) being faster than 0.1 ms of 'fir-nel'.

Two-color laser imaging interferometer using CO2 laser and quantum cascade laser in the Large Helical Device

The interference signal obtained with a 3-O millimeter-wave interferometer is processed digitally to evaluate the phase signal with a 1 MHz sampling rate.

Line integrated electron density on the horizontal mid-plane is measured by the two-color millimeter-wave interferometer, with the sampling rate of 1 micro-second (0.001 ms) being faster than 0.1 ms of 'mmw-nel'.

Fast 2-dimensional soft X-ray camera using 6 x 8 = 48 silicon photo diode array to investigate high frequency MHD instability with high mode number. Each diode has a large sensor area of 10 mm x 10 mm with small capacitance to measure signa…

Soft X-ray detector array system measures the radial soft X-ray emission profile from LHD for equilibrium and stability analysis by using multi-channel scintillator. Soft X-ray is converted to visible light and detected by PMT. Frequency up…