High repetition rate neutron flux array using digital-signal processing and scintillators for study of high performance plasma at JT-60U

Journal Article · Wed Oct 15 00:00:00 EDT 2008 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2971975· OSTI ID:21266498

Shinohara, K; Ishikawa, M ^[1]; Okuji, T; Baba, M ^[2]; Itoga, T ^[3]

---

1. Japan Atomic Energy Agency Naka, Ibaraki 311-0193 (Japan)
2. Nation Cyclotron and Radioisotope Center, Tohoku University, Aoba 6-3, Sendai, Miyagi 980-8578 (Japan)
3. Spring-8/Riken, 1-1 Koto, Sayo, Hyogo 679-5178 (Japan)

Aiming at increasing the count rate capability of the radial neutron collimator system in JT-60U, a digital-signal processing system has been extended to seven channels for data acquisition of stilbene crystal detector using analog-to-digital converters equipped with a fast flash memory. In this method, the detected pulses were postprocessed concerning pulse shape and pulse height. Using this system, the radial neutron collimator system can provide the information on the temporal evolution of emission rate of d-T neutrons and gamma rays as well as d-D neutrons. On the course of the development, the fast and stable handling of the large data around 7 GB is undertaken for a discharge.

• OSTI ID: 21266498
• Journal Information: Review of Scientific Instruments, Vol. 79, Issue 10; Other Information: DOI: 10.1063/1.2971975; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANALOG-TO-DIGITAL CONVERTERS
COLLIMATORS
GAMMA RADIATION
JT-60U TOKAMAK
NEUTRON FLUX
NEUTRONS
PHOSPHORS
PLASMA
PROCESSING
PULSE SHAPERS
SIGNALS
STILBENE