PCI/iRMX-based front-end data acquisition for the HT-7U experiment

Author

Shu, Yantai ; Luo, Jiarong ; Yan, Jianbing ; Zhao, Feng ; Zhang, Liang

Author_Institution

Dept. of Comput. Sci., Tianjin Univ., China

Volume

51

Issue

3

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

420

Lastpage

424

Abstract

A PCI/iRMX-based front-end system is being designed to serve as data acquisition (DAQ) subsystem for the HT-7U superconducting tokamak. The diagnostic instruments are connected to four analog-to-digital converter (ADC) boards that are directly plugged into the peripheral component interconnect (PCI) bus of a personal computer (PC) running the iRMX real-time operating system. Each ADC board has eight channels. The sampling rate of each channel can be up to 125 K samples per second. The acquired data are directly transferred from the ADC board into the memory of the PC, and then transferred to servers through the network. As a testbed, one PCI/iRMX subsystem has been built and has acquired data from the existing HT-7 tokamak. The DAQ can easily support a wide range of pulse lengths, even matching extremely long pulse and steady-state operation. This paper describes the system design and performance evaluation in detail.

Keywords

analogue-digital conversion; data acquisition; fusion reactor design; fusion reactor instrumentation; fusion reactor operation; real-time systems; ADC board; DAQ; HT-7U superconducting tokamak; PC memory; PCI; PCI/iRMX-based front-end data acquisition; analog-to-digital converter boards; diagnostic instruments; distributed systems; iRMX real-time operating system; performance evaluation; peripheral component interconnect bus; personal computer; pulse lengths; sampling rate; servers; steady-state operation; system design; testbed; Analog-digital conversion; Data acquisition; Instruments; Microcomputers; Network servers; Operating systems; Real time systems; Sampling methods; Testing; Tokamaks; DAQ; Data acquisition; distributed systems; real-time systems;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2004.828506

Filename

1310534