Abstract

The BM@N is a fixed target experiment aimed to study (multi) strange hyperons production and to search for hypernuclei in nucleus-nucleus collisions at beam ion energies up to 4.5 A GeV. The BM@N is also the most suitable experiment for the study of fragmentation in heavy ion collisions. The BM@N powerful analyzing dipole magnet deflects the charged spectators and partially separates them from the neutron spectators. The separate measurements of charged and neutron spectators allow to determine the geometry of nuclear collisions (centrality and reaction plane orientation) as well as to study the mechanisms of fragmentation and the equation of state of nuclear matter. The measurements of the heavy charged fragments and proton spectators will be performed with the quartz and scintillator hodoscopes correspondingly, while the forward hadron calorimeter will be used to measure the neutron spectators. Results of simulation of the proposed forward detector system are discussed, showing that the new experimental fragmentation data for heavy ion collisions are needed to validate fragmentation models.

中文翻译：

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BM@N 实验中重离子碰撞中的旁观物质研究

摘要

BM@N 是一个固定目标实验，旨在研究（多）奇异超子的产生，并在高达 4.5 A的束离子能量下在核-核碰撞中寻找超核锗钒。BM@N 也是最适合研究重离子碰撞碎裂的实验。BM@N 强大的分析偶极磁体使带电的旁观者偏转，并将他们与中子旁观者部分分离。对带电和中子旁观者的单独测量可以确定核碰撞的几何形状（中心性和反应平面方向）以及研究碎裂机制和核物质的状态方程。重带电碎片和质子旁观者的测量将相应地使用石英和闪烁体光度计进行，而前强子量热仪将用于测量中子旁观者。讨论了所提出的前向检测器系统的仿真结果，