Gamma-ray and neutron spectra from the \(^{18}\hbox {O }{+}^{76} \hbox {Se}\) reaction at 15.3 MeV/u were measured with the EDEN array of liquid scintillators at the LNS. The results were compared to GEANT Hadrontherapy physics list simulations in order to assess the reliability of this model for the development of the NUMEN project. A good agreement with the shape of the experimental gamma-ray spectra and a reasonable agreement with the total count rates were obtained. The gamma spectra originated from the nuclear reactions were selected by time coincidence with the Superconducting Cyclotron radio-frequency reference signal. The random coincidence background rate was appropriately described only when the Faraday Cup, the material and geometry of the experimental hall and its contents were included in the simulation with sufficient detail. The information on the radiation spectra is important for the adequate development of the project of the detector arrays and electronic equipment for the advanced phase of NUMEN. Since orders of magnitude larger beam intensities are planned for this phase, the random coincidence rate is also of significant importance, particularly for the performance of the G-NUMEN gamma calorimeter array.

中文翻译：

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GEANT4强子疗法物理模型与NUMEN项目反应案例的实验数据的首次比较

\（^ {18} \ hbox {O} {+} ^ {76} \ hbox {Se} \）的伽马射线和中子光谱用液氮闪烁体的EDEN阵列在LNS处测量15.3 MeV / u的反应。将结果与GEANT强子疗法物理列表模拟进行比较，以评估该模型对于NUMEN项目开发的可靠性。获得了与实验伽玛射线光谱形状的良好一致性，并且与总计数率具有合理的一致性。通过与超导回旋加速器射频参考信号的时间重合来选择源自核反应的伽玛光谱。仅当法拉第杯，实验大厅的材料和几何形状及其内容包含在模拟中时，才能充分详细地描述随机符合背景率。有关辐射光谱的信息对于适当开发NUMEN高级阶段的探测器阵列和电子设备项目至关重要。由于为此阶段计划了更大数量级的光束强度，随机重合率也非常重要，特别是对于G-NUMEN伽马量热仪阵列的性能而言。