The MAGNEX magnetic spectrometer is used in the experimental measurements of Double Charge Exchange and Multi-Nucleon Transfer reactions induced by heavy ions within the NUMEN project. These processes are characterized by small cross sections under a large background due to other reaction channels. Therefore an accurate control of the signal to background ratio is mandatory. In this article, the determination of the MAGNEX spectrometer background contribution on cross section measurements is presented by applying a suitable analysis to quantify the limits of the adopted particle identification technique. The method is discussed considering the ¹¹⁶Cd(²⁰Ne, ²⁰O)¹¹⁶Sn Double Charge Exchange reaction data, however it can be applied to any other reaction channel of interest.

MAGNEX电磁光谱仪用于NUMEN项目中重离子引起的双电荷交换和多核转移反应的实验测量。这些过程的特征在于由于其他反应通道而在大背景下的小横截面。因此，必须精确控制信噪比。在本文中，通过应用适当的分析来量化所采用的颗粒识别技术的局限性，从而确定了MAGNEX光谱仪对横截面测量的背景贡献。考虑到¹¹⁶ Cd（²⁰ Ne，²⁰ O）¹¹⁶讨论了该方法Sn双电荷交换反应数据，但是可以将其应用于任何其他感兴趣的反应通道。