Synchronized operation by field programmable gate array based signal controller for the Thomson scattering diagnostic system in KSTAR
- National Fusion Research Institute, Gwahangno 113, Daejeon 305-333 (Korea, Republic of)
- Chungnam National University, Daehak-ro 99, Daejeon 305-764 (Korea, Republic of)
- Seed Core Co., Ltd., Daehak-ro 99, Daejeon 305-764 (Korea, Republic of)
The Thomson scattering diagnostic system is successfully installed in the Korea Superconducting Tokamak Advanced Research (KSTAR) facility. We got the electron temperature and electron density data for the first time in 2011, 4th campaign using a field programmable gate array (FPGA) based signal control board. It operates as a signal generator, a detector, a controller, and a time measuring device. This board produces two configurable trigger pulses to operate Nd:YAG laser system and receives a laser beam detection signal from a photodiode detector. It allows a trigger pulse to be delivered to a time delay module to make a scattered signal measurement, measuring an asynchronous time value between the KSTAR timing board and the laser system injection signal. All functions are controlled by the embedded processor running on operating system within a single FPGA. It provides Ethernet communication interface and is configured with standard middleware to integrate with KSTAR. This controller has operated for two experimental campaigns including commissioning and performed the reconfiguration of logic designs to accommodate varying experimental situation without hardware rebuilding.
- OSTI ID:
- 22093734
- Journal Information:
- Review of Scientific Instruments, Vol. 83, Issue 9; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
Similar Records
An Experimental Feasibility Study on Applying Neutron Tomography to Encapsulated Spent Nuclear Fuel - 20050
Progress on the multipulse Thomson Scattering diagnostic on DIII-D
Related Subjects
CONFINEMENT
DETECTION
ELECTRON DENSITY
ELECTRON TEMPERATURE
EQUIPMENT
INTERFACES
ION TEMPERATURE
MICROPROCESSORS
NEODYMIUM LASERS
PHOTODIODES
PLASMA DENSITY
PLASMA DIAGNOSTICS
THOMSON SCATTERING
TIME DELAY
TIME MEASUREMENT
TIMING CIRCUITS
TOKAMAK DEVICES
TRIGGER CIRCUITS