中国物理B ›› 1999, Vol. 8 ›› Issue (12): 913-918.doi: 10.1088/1004-423X/8/12/006

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

NEUTRON TIME OF FLIGHT ENERGY SPECTROMETER FOR ICF ION TEMPERATURE DIAGNOSTIC

唐正元, 杨建伦, 温树槐, 王根兴, 郭玉芝, 杨洪琼, 马驰   

  1. Southwest Institute of Nuclear Physics and Chemistry, Chengdu 610003, China
  • 收稿日期:1999-05-19 出版日期:2005-06-29 发布日期:2005-06-29
  • 基金资助:
    Project supported by the National High-Tech(863) ICF Committee of China (Grant No. 863-416-4.8) and by the fund of Chinese Academy of Engineering Physics (Grant No. 990215).

NEUTRON TIME OF FLIGHT ENERGY SPECTROMETER FOR ICF ION TEMPERATURE DIAGNOSTIC

TANG ZHENG-YUAN (唐正元), YANG JIAN-LUN (杨建伦), WEN SHU-HUAI (温树槐), WANG GEN-XING (王根兴), GUO YU-ZHI (郭玉芝), YANG HONG-QIONG (杨洪琼), MA CHI (马驰)   

  1. Southwest Institute of Nuclear Physics and Chemistry, Chengdu 610003, China
  • Received:1999-05-19 Online:2005-06-29 Published:2005-06-29
  • Supported by:
    Project supported by the National High-Tech(863) ICF Committee of China (Grant No. 863-416-4.8) and by the fund of Chinese Academy of Engineering Physics (Grant No. 990215).

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摘要： A current-mode neutron time-of-flight(nTOF) energy spectrometer for inertial confinement fusion(ICF) ion temperature measurements has been designed which will reduce measuring error of fusion neutron energy spectra when the neutron yield is low. The spectrometer consists of a shallow cup-shaped ST1422 fast plastic scintillator with a thicknees of 3mm and full effective volume of 104cm3, a microchannel plate photomultiplier tube(MCP-PMT), a piece of coaxial cable(SUJ-50-7) with a length of 20m, and a transient oscilloscope with a bandwidth of 7GHz. The main performances of the spectrometer and its components have been calibrated. The rise-time and FWHM of the temporal response function are 260ps and 850 ps, respectively. This spectrometer will be used to measure ion temperature in the direct-driven implosion experiments on Sheng-Guang 2 laser facility at Shanghai Institute of Optics and Fine Mechanica(SIOFM) next year.

Abstract: A current-mode neutron time-of-flight(nTOF) energy spectrometer for inertial confinement fusion(ICF) ion temperature measurements has been designed which will reduce measuring error of fusion neutron energy spectra when the neutron yield is low. The spectrometer consists of a shallow cup-shaped ST1422 fast plastic scintillator with a thicknees of 3mm and full effective volume of 104cm3, a microchannel plate photomultiplier tube(MCP-PMT), a piece of coaxial cable(SUJ-50-7) with a length of 20m, and a transient oscilloscope with a bandwidth of 7GHz. The main performances of the spectrometer and its components have been calibrated. The rise-time and FWHM of the temporal response function are 260ps and 850 ps, respectively. This spectrometer will be used to measure ion temperature in the direct-driven implosion experiments on Sheng-Guang 2 laser facility at Shanghai Institute of Optics and Fine Mechanica(SIOFM) next year.

中图分类号:  (Laser inertial confinement)

  • 52.57.-z
29.30.Hs (Neutron spectroscopy) 29.40.Mc (Scintillation detectors) 85.60.Ha (Photomultipliers; phototubes and photocathodes)