Plasma and Fusion Research
Volume 5, S1043 (2010)
Regular Articles
- Department of Quantum Science and Energy Engineering, Tohoku University, Sendai 980-8579, Japan
- 1)
- Japan Atomic Energy Agency, 801-1 Mukoyama, Naka 311-0193, Japan
- 2)
- Cyclotron and Radioisotope Center, Tohoku University, Sendai 980-8578, Japan
- 3)
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
Abstract
In JT-60U, the multi-channel neutron profile monitor measures the line-integrated neutron emission. A digital signal processing (DSP) system was applied to all neutron detectors in the neutron profile monitor. A new 2D mapping method for DSP data analysis was developed to discriminate neutrons from γ-rays. The combination of DSP and the 2D map enabled the simultaneous measurement of DD and DT neutrons with one detector. The time evolutions of DD and of DT neutrons showed different responses to the ITB formation, depending on the viewing chord.
Keywords
JT-60U, neutron diagnostics, Digital signal Processors, triton burn-up
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This paper may be cited as follows:
Keiichi ISHII, Kouji SHINOHARA, Masao ISHIKAWA, Toshio OKUJI, Mamoru BABA, Mitsutaka ISOBE, Sumio KITAJIMA and Mamiko SASAO, Plasma Fusion Res. 5, S1043 (2010).