Title :
The data acquisition and processing of lower hybrid wave phase based on FPGA and QNX Neutrino realtime operation system
Author :
Yong, Yang ; Jiafang, Shan ; Hui, Xu ; Qiang, Liu ; Yongzhao, Zhou
Author_Institution :
Inst. of Plasma Phys., Chinese Acad. of Sci., Hefei
Abstract :
The experimental advanced superconduct tokamak (EAST) has been constructed to study advanced tokamak plasma physics in steady-state. As one of the non-inductive plasma current drive systems, lower hybrid current drive (LHCD) system (2.45 GHz, 2 MW now) has been applied for long-pulse operation which lasts up to 1000 s. A feedback control subsystem for the antenna phase difference (FCSAPD) is designed for EAST LHCD experiments. This paper presents the new structure of this subsystem including the phase data acquisition(pDAQ) device and some processing and executing components. Meanwhile, the corresponding computer software was developed under QNX Neutrino realtime operation system (RTOS). Some initial tests from this subsystem indicate its reliability and security.
Keywords :
Tokamak devices; data acquisition; field programmable gate arrays; physics computing; plasma hybrid waves; real-time systems; security of data; FPGA; QNX Neutrino realtime operation system; data acquisition; experimental advanced superconduct tokamak; feedback control subsystem for the antenna phase difference; frequency 2.45 GHz; hybrid wave phase; long-pulse operation; lower hybrid current drive system; power 2 MW; tokamak plasma physics; Antenna feeds; Data acquisition; Feedback control; Field programmable gate arrays; Neutrino sources; Physics; Plasma materials processing; Plasma waves; Steady-state; Tokamaks; FPGA; LHCD; RTOS; multithreading; phase;
Conference_Titel :
Information and Automation, 2008. ICIA 2008. International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-4244-2183-1
Electronic_ISBN :
978-1-4244-2184-8
DOI :
10.1109/ICINFA.2008.4608077
