Realtime data streaming and storing structure for LHD´s fusion plasma experiments

Author

Nakanishi, H. ; Ohsuna, M. ; Kojima, M. ; Imazu, S. ; Nonomura, M. ; Emoto, M. ; Yoshida, M. ; Iwata, C. ; Ida, K.

Author_Institution

Nat. Inst. for Fusion Sci., Gifu, Japan

fYear

2014

Firstpage

1

Lastpage

2

Abstract

HD (Large Helical Device) is a superconducting fusion experimental device which enables steady-state plasma sustainment. Its data system, namely “LABCOM system”, has been fully equipped with high-throughput realtime data acquisition (DAQ), streaming, and archiving capabilities [1][2]. To deal with more than 100 MB/s stream, large shared memory is primarily used for inter-process fast and massive data handlings. Multitasking and multithreaded subtasks are implemented for every I/O device in each DAQ frontend [3].

Keywords

Tokamak devices; data acquisition; input-output programs; plasma toroidal confinement; superconducting devices; I/O device; LABCOM system; LHD fusion plasma experiments; Large Helical Device; Realtime data storing structure; handlings; high-throughput realtime data acquisition; inter-process fast data handlings; realtime data streaming; steady-state plasma sustainment; superconducting fusion experimental device; Data acquisition; Physics; Plasmas; Random access memory; Real-time systems; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Real Time Conference (RT), 2014 19th IEEE-NPSS

Print_ISBN

978-1-4799-3658-8

Type

conf

DOI

10.1109/RTC.2014.7097484

Filename

7097484