NUCLEAR TECHNIQUES, Volume. 48, Issue 7, 070005(2025)

Research progress of China Mianyang Research Reactor and its scientific platform

Yuchuan GUO, Dazhi QIAN*, Hongyuan WEI, and Xiaoqing TU
Author Affiliations
  • Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621999, China
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    Figures & Tables(18)
    Diagram of typical structure design of irradiation device (color online)
    Snapshot of typical irradiation device after processing
    Online tritium production performance testing experimental device[24] (color online)(a) Sectional view of the testing device, (b) Detail design of the testing device
    Snapshot of sodium iodide[131I] oral solution (color online)
    Snapshot of 177Lu-DOTATATE injection
    Snapshot of 99Mo-99mTc generation
    The layout of instruments in neutron science platform of CMRR (color online)
    Snapshot of residual stress neutron diffractometer[36] (color online)
    Snapshot of high resolution neutron diffractometer[37] (color online)
    Snapshot of cold neutron triple-axis spectrometer[38] (color online)
    Snapshot of high pressure neutron diffractometer[39] (color online)
    Schematic diagram of the thermal neutron imaging device[40] (color online)
    Schematic diagram of the cold neutron imaging device[41]
    Results of neutron radiography for typical structural components[40]
    Neutron radiography inspection of U-10Zr alloy fuel after irradiation[42] (color online)
    Inspection image of leaf residual core by neutron radiography[43]
    • Table 1. Main technical parameters of the CMRR reactor[14-15]

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      Table 1. Main technical parameters of the CMRR reactor[14-15]

      参量Parameter参数Value
      反应堆类型Reactor type池式研究堆Pool-type research reactor
      组件类型Assembly type板状组件Plate-type assembly
      燃料类型Fuel typeU3Si2-Al
      流道类型Flow channel type矩形流道Rectangular channel
      流动类型(运行阶段)Flow state (operating stage)由上而下强迫循环Top-down forced circulation
      流动类型(停堆阶段)Flow state (shutdown stage)由下而上自然循环Down-top natural circulation
      冷却剂Coolant轻水Light water
      慢化剂Moderator轻水Light water
      反射层Reflector重水箱Heavy water tank
      峰值快中子注量率Peak fast neutron flux rate / n∙cm-2∙s-13.4×1014
      峰值热中子注量率Peak thermal neutron flux rate / n∙cm-2∙s-12.0×1014
      堆芯入口水温Core inlet water temperature35 ℃
      堆芯出口水温Core outlet water temperature42 ℃
      一回路总流量Flow rate of primary loop / m3∙h-12 500
      二回路总流量Flow rate of secondary loop / m3∙h-13 200
    • Table 2. Spectrometer and device in neutron science platform of CMRR

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      Table 2. Spectrometer and device in neutron science platform of CMRR

      序号Serial number谱仪及装置Spectroscopic instrument
      1高分辨中子衍射谱仪(High-Resolution Neutron Diffractometer,HRND)
      2中子应力分析射仪(Residual Stress Neutron Diffractometer,RSND)
      3高压中子衍射谱仪(High-Pressure Neutron Diffractometer,HPND)
      4大尺度中子衍射谱仪(Large Scale Neutron Diffractometer,LSND)
      5中子小角散射谱仪(Small-Angle Neutron Spectrometer,SANS)
      6飞行时间极化中子反射谱仪(Time-of-Flight & Polarized Neutron Reflectometer,TPNR)
      7中子标准测试束线(Neutron Standard Test Beamline,NSTB)
      8自旋回波小角中子散射谱仪(Spin Echo Small Angle Neutron Scattering Spectrometer,SESANS)
      9纵向中子共振型自旋回波谱仪(Longitudinal Neutron Resonance Spin Echo Spectrometer,LNRSET)
      10热中子三轴谱仪(Thermal Neutron Triple Axis Spectrometer,TTAS)
      11超小角中子散射谱仪(Ultra-Small Angle Neutron Spectrometer,USANS)
      12中子衍射工程应力谱仪(High-temperature Engineering Tensile Spectrometer,HETU)
      13超长小角中子散射谱仪(Ultra-long Small-angle Neutron Spectrometer,LUOSHU)
      14热中子照相装置(Thermal Neutron Radiography Facility,TNR)
      15冷中子照相装置(Cold Neutron Radiography Facility,CNR)
      16

      Profiler,DP)

      冷中子深度分析仪(Cold Neutron Depth

      17瞬发伽马中子活化分析仪(Prompt Gamma Neutron Activation Analysis,PGNAA)
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    Yuchuan GUO, Dazhi QIAN, Hongyuan WEI, Xiaoqing TU. Research progress of China Mianyang Research Reactor and its scientific platform[J]. NUCLEAR TECHNIQUES, 2025, 48(7): 070005

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    Paper Information

    Category: Special Issue on The First Academic Annual Conference of the Research Reactor and Innovative Reactor Association of Chinese Nuclear Society and Advanced Nuclear Power System Reactor Engineering

    Received: May. 20, 2025

    Accepted: --

    Published Online: Sep. 15, 2025

    The Author Email: Dazhi QIAN (QIANDazhi)

    DOI:10.11889/j.0253-3219.2025.hjs.48.250213

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