Measurement of TOF of fast neutrons with 238U target
| Autor: | Zhiyong He, He-Run Yang, Qiu Tianli, X. Yuan, Peng Ma, Meng Li, Liang Chen, Rong-Jiang Hu, Li-Min Duan, Chen-Gui Lu, Zhang Junwei, Zaiguo Gan, Yikai Hou, Xianglun Wei, Yuanfan Guan, Hongbin Zhang, Chunli Yang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Physics::Instrumentation and Detectors Fission 020209 energy Nuclear Theory Measure (physics) Neutron 02 engineering and technology engineering.material 030218 nuclear medicine & medical imaging Nuclear physics 03 medical and health sciences 0302 clinical medicine Coating Time-of-flight(TOF) 0202 electrical engineering electronic engineering information engineering Nuclear Experiment Parallel plate avalanche counter Spontaneous fission The time resolution TK9001-9401 Detector Neutron temperature Anode Nuclear Energy and Engineering engineering Nuclear engineering. Atomic power |
| Zdroj: | Nuclear Engineering and Technology, Vol 53, Iss 6, Pp 1964-1969 (2021) |
| ISSN: | 1738-5733 |
| DOI: | 10.1016/j.net.2020.12.003 |
| Popis: | We developed a Dual-PPACs detector for fast neutron measurements that consists of two sets of PPAC: conventional PPAC and fission PPAC. A238U(U3O8) coating is placed in the fission PPAC’s anode, which is used as the neutrons conversion layer. An experiment was performed to measure neutron time-of-flight (TOF) in which 252Cf spontaneous fission source was used. An excellent time resolution of 164ps has been observed at 6 mbar in isobutene gas. With the excellent time resolution of Dual-PPACs detector, exact neutron energy can be extracted from the timing measurement. The experimental detection efficiency was 1.9 × 10−7, consistent with the efficiency of 2.5 × 10−7 given by a Geant4 simulation. Ultimately, the results show that the Dual-PPACs detector is a suitable candidate for measuring fast neutrons in the future CiADS system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|