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首页> 外文期刊>Proceedings of the Arkansas Academy of Science >Using FRITIOF to Model Nucleus-Nucleus Interactions in a Cosmic Ray Detector
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Using FRITIOF to Model Nucleus-Nucleus Interactions in a Cosmic Ray Detector

机译：使用FRITIOF对宇宙射线探测器中的核-核相互作用进行建模

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A scintillating optical fiber calorimeter (SOFCAL) is being developed by NASA/Marshall Space Flight Center for use in experiments to study the spectrum of high-energy cosmic rays and gamma rays from 100 GeV to 1,000 TeV. SOFCAL will not saturate for long exposures and this calorimeter in these balloon-borne emulsion chambers will be helpful for the study of the composition of primary cosmic-ray nuclei. For primary nuclei with energies much greater than 10~(14) eV, nucleus-nucleus interactions are likely to exhibit characteristics of a quark-gluon plasma (QGP). A particle event generator was used to model the collision of a cosmic-ray nucleus with a target nucleus in an emulsion chamber. FRITIOF with LUCIAE was chosen to model collisions of primary cosmic rays in an emulsion chamber with SOFCAL. Pseudo-rapidity distributions were computed for protons on lead at 200 GeV/c and compared with experimental data. Pseudo-rapidity distributions were computed for protons or iron incident on a carbon or silver nucleus. For gamma-rays from nucleus-nucleus interactions, the total energy of the electromagnetic component ΣE_γ was computed. The partial coefficient of inelasticity k_γ, defined by ΣE_γ = k_γ E_0, was computed from the primary energy E_0 of the cosmic rays. The f(k_γ)-distributions were computed and compared with existing calorimeter data. Funding was provided by the NASA/University Joint Venture (JOVE) Program.
机译：美国国家航空航天局/马歇尔太空飞行中心正在开发一种闪烁光纤量热仪（SOFCAL），用于研究研究从100 GeV到1,000 TeV的高能宇宙射线和伽马射线的光谱的实验。 SOFCAL不会因长时间曝光而饱和，并且在这些气球载乳剂室内的热量计将有助于研究主要宇宙射线核的组成。对于能量远大于10〜（14）eV的原核，核-核相互作用可能表现出夸克-胶子等离子体（QGP）的特征。粒子事件生成器用于模拟乳剂室中宇宙射线核与目标核的碰撞。选择FRITIOF和LUCIAE来模拟带有SOFCAL的乳剂室中主要宇宙射线的碰撞。计算铅在200 GeV / c下的质子的伪快速分布，并与实验数据进行比较。计算质子或铁入射到碳或银核上的伪快速分布。对于来自核-核相互作用的伽马射线，计算了电磁分量ΣE_γ的总能量。由宇宙射线的一次能量E_0计算出由ΣE_γ=k_γE_0定义的非弹性局部系数k_γ。计算f（k_γ）分布并将其与现有量热仪数据进行比较。资金由NASA /大学合资企业（JOVE）计划提供。

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