Steady-state data acquisition method for LHD diagnostics
2003; Elsevier BV; Volume: 66-68; Linguagem: Inglês
10.1016/s0920-3796(03)00329-6
ISSN1873-7196
AutoresH. Nakanishi, Kojima Mamoru, M. Ohsuna, S. Komada, M. Nonomura, Masanobu Yoshida, Setsuo Imazu, S. Sudo,
Tópico(s)Advanced Data Storage Technologies
ResumoThe LHD experiment has gone through 5 campaign periods over the past 4 years, during which the diagnostics data continues to grow and the primary 28 measurements produce about 620 MB/shot in 150 shot/day 3-min cycles. In 2002, 30-min long-pulse experiments will be carried out in LHD, where real-time operations are indispensable for plasma measurements and data acquisition. The new scheme for utilizing conventional CAMAC digitizers in long-pulse experiments has been discussed and examined. As a result, in LHD, CAMACs will shift into 120–180 s cyclic operation, synchronized by the diagnostic timing system. The new CompactPCI-based digitizer frontend has performed about 84 MB/s continuous acquisition in benchmarks, and has been formulated with the conventional CAMAC system to make concurrent acquisitions.
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