The KSTAR BES system has its spatial resolution of 1 cm, the temporal resolution of 2 MHz, and a total 32 channel (8 radial × 4 poloidal) avalanche photo diode array. 
KSTAR BES system
The KSTAR BES system has its spatial resolution of 1 cm, the temporal resolution of 2 MHz, and a total 32 channel (8 radial × 4 poloidal) avalanche photo diode array. 
the KSTAR BES system
Edge electron density profiles and fluctuations measured by two-dimensional beam emission spectroscopy in the KSTAR.Beam emission spectroscopy (BES) system in Korea Superconducting Tokamak Advanced Research (KSTAR) has recently been upgraded. 
Beam emission spectroscopy (BES) system