The neutron array of the compact spectrometer for heavy ion experiments in Fermi energy region
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Si, Dawei Xiao, Sheng Qin, Yuhao Wang, Yijie Xu, Junhuai Tian, Baiting Zhang, Boyuan Guo, Dong Zhi, Qin Wei, Xiaobao Hao, Yibo Wang, Zengxiang Zhuo, Tianren Yang, Yuansheng Wei, Xianglun Yang, Herun Ma, Peng Duan, Limin Duan, Fangfang Ma, Junbing Xu, Shiwei Bai, Zhen Yang, Guo Yang, Yanyun Xiao, Zhigang |
| author_facet | Si, Dawei Xiao, Sheng Qin, Yuhao Wang, Yijie Xu, Junhuai Tian, Baiting Zhang, Boyuan Guo, Dong Zhi, Qin Wei, Xiaobao Hao, Yibo Wang, Zengxiang Zhuo, Tianren Yang, Yuansheng Wei, Xianglun Yang, Herun Ma, Peng Duan, Limin Duan, Fangfang Ma, Junbing Xu, Shiwei Bai, Zhen Yang, Guo Yang, Yanyun Xiao, Zhigang |
| contents | The emission of neutrons from heavy ion reactions is an important observable for studying the asymmetric nuclear equation of state and the reaction dynamics. A 20-unit neutron array has been developed and mounted on the compact spectrometer for heavy ion experiments (CSHINE) to measure the neutron spectra, neutron-neutron and neutron-proton correlation functions. Each unit consists of a $\rm 15\times 15\times 15~cm^3$ plastic scintillator coupled to a $ ϕ=52 ~\rm mm$ photomultiplier. The Geant4 simulation with optical process is performed to investigate the time resolution and the neutron detection efficiency. The inherent time resolution of 212 ps is obtained by cosmic ray coincidence test. The n-$γ$ discrimination and time-of-flight performance are given by $\rm ^{252}Cf$ radioactive source test and beam test. The neutron energy spectra have been obtained in the angle range $30^\circ \le θ_{\rm lab} \le 51^\circ$ in the beam experiment of $^{124}$Sn+$^{124}$Sn at 25 MeV/u with CSHINE. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_18605 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The neutron array of the compact spectrometer for heavy ion experiments in Fermi energy region Si, Dawei Xiao, Sheng Qin, Yuhao Wang, Yijie Xu, Junhuai Tian, Baiting Zhang, Boyuan Guo, Dong Zhi, Qin Wei, Xiaobao Hao, Yibo Wang, Zengxiang Zhuo, Tianren Yang, Yuansheng Wei, Xianglun Yang, Herun Ma, Peng Duan, Limin Duan, Fangfang Ma, Junbing Xu, Shiwei Bai, Zhen Yang, Guo Yang, Yanyun Xiao, Zhigang Instrumentation and Detectors Nuclear Experiment The emission of neutrons from heavy ion reactions is an important observable for studying the asymmetric nuclear equation of state and the reaction dynamics. A 20-unit neutron array has been developed and mounted on the compact spectrometer for heavy ion experiments (CSHINE) to measure the neutron spectra, neutron-neutron and neutron-proton correlation functions. Each unit consists of a $\rm 15\times 15\times 15~cm^3$ plastic scintillator coupled to a $ ϕ=52 ~\rm mm$ photomultiplier. The Geant4 simulation with optical process is performed to investigate the time resolution and the neutron detection efficiency. The inherent time resolution of 212 ps is obtained by cosmic ray coincidence test. The n-$γ$ discrimination and time-of-flight performance are given by $\rm ^{252}Cf$ radioactive source test and beam test. The neutron energy spectra have been obtained in the angle range $30^\circ \le θ_{\rm lab} \le 51^\circ$ in the beam experiment of $^{124}$Sn+$^{124}$Sn at 25 MeV/u with CSHINE. |
| title | The neutron array of the compact spectrometer for heavy ion experiments in Fermi energy region |
| topic | Instrumentation and Detectors Nuclear Experiment |
| url | https://arxiv.org/abs/2406.18605 |