Coaxial CVD diamond detector for neutron diagnostics at ShenGuang III laser facility

A coaxial, high performance diamond detector has been developed for neutron diagnostics of inertial confinement fusion at ShenGuangIII laser facility. A Φ10 mm × 1 mm “optical grade” chemical-vapor deposition diamond wafer is assembled in coaxial-designing housing, and the signal is linked to a SubM...

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Veröffentlicht in:Review of scientific instruments 2017-06, Vol.88 (6), p.063506-063506
Hauptverfasser: Yu, Bo, Liu, Shenye, Chen, Zhongjing, Huang, Tianxuan, Jiang, Wei, Chen, Bolun, Pu, Yudong, Yan, Ji, Zhang, Xing, Song, Zifeng, Tang, Qi, Hou, Lifei, Ding, Yongkun, Zheng, Jian
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Sprache:eng
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Zusammenfassung:A coaxial, high performance diamond detector has been developed for neutron diagnostics of inertial confinement fusion at ShenGuangIII laser facility. A Φ10 mm × 1 mm “optical grade” chemical-vapor deposition diamond wafer is assembled in coaxial-designing housing, and the signal is linked to a SubMiniature A connector by the cathode cone. The coaxial diamond detector performs excellently for neutron measurement with the full width at half maximum of response time to be 444 ps for a 50 Ω measurement system. The average sensitivity is 0.677 μV ns/n for 14 MeV (DT fusion) neutrons at an electric field of 1000 V/mm, and the linear dynamic range is beyond three orders of magnitude. The ion temperature results fluctuate widely from the neutron time-of-flight scintillator detector results because of the short flight length. These characteristics of small size, large linear dynamic range, and insensitive to x-ray make the diamond detector suitable to measure the neutron yield, ion temperature, and neutron emission time.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4989698