The ring injection dump (RID) is the largest beam dump in the Spallation Neutron Source facility at Oak Ridge National Laboratory and accepts a fraction of the beam from the ring that is not captured in the ring during injection. Thermo-fluid modeling of the RID components was performed during the initial design by using the software ANSYS${}^{\mathrm{TM}}$ CFX to characterize the power rating for the RID. From the calculations, the power rating was lowered from 200 kW to 150 kW, at 1.3 GeV beam energy due to concerns regarding the heating of the concrete structure. The Proton Power Upgrade project scope included reevaluating the power limit to the RID in anticipation that increasing it would provide more operational flexibility. The focus was on the shielding because it was the limiting factor, and data collected from thermocouples installed on the structure were used to benchmark the analysis. A three-stage process was adopted in the latest study. First, the already existing steady-state calculations were validated and extended with the latest Monte Carlo N-Particle source term calculations. Second, transient calculations were conducted to capture the dynamic state of the system in response to the energy dumped to the RID during the following operational period of the beam from 2005–2019 (14 years), and sensitivity analyses of crucial parameters were performed to benchmark the model with reasonable accuracy. Finally, an idealized transient cycle analysis was conducted with realistic duty factors to predict the temperature distribution at higher beam powers. The results confirmed the accuracy of the original steady state model but allowed the development of a new validated transient model with higher accuracy for future analyses.

环形注入转储（RID）是橡树岭国家实验室Spallation中子源设施中最大的光束转储，它接受来自环的一部分射束，在注入过程中未被捕获。在最初的设计中，使用软件ANSYS对RID组件进行了热流体建模。${}^{\mathrm{TM值}}$CFX表征RID的额定功率。根据计算，由于担心混凝土结构的发热，在1.3 GeV束能量的情况下，额定功率从200 kW降低至150 kW。Proton Power Upgrade项目的范围包括重新评估RID的功率限制，因为预期提高RID将提供更多的操作灵活性。重点放在屏蔽上，因为它是限制因素，并且从安装在结构上的热电偶收集的数据用于基准分析。最新研究采用了三个阶段的过程。首先，使用最新的蒙特卡洛N粒子源项计算对已经存在的稳态计算进行验证和扩展。第二，在2005-2019年（14年）的下一个光束运行期间，进行了瞬态计算以捕获系统的动态状态，以响应释放到RID的能量，并进行了关键参数的敏感性分析以对模型进行基准测试合理的准确性。最后，采用现实的占空因数进行了理想的瞬态周期分析，以预测较高光束功率下的温度分布。结果证实了原始稳态模型的准确性，但允许开发出一种新的经过验证的瞬态模型，该模型具有更高的准确性，可用于将来的分析。最后，采用现实的占空因数进行了理想的瞬态周期分析，以预测较高光束功率下的温度分布。结果证实了原始稳态模型的准确性，但允许开发出一种新的经过验证的瞬态模型，该模型具有更高的准确性，可用于将来的分析。最后，采用现实的占空因数进行了理想的瞬态周期分析，以预测较高光束功率下的温度分布。结果证实了原始稳态模型的准确性，但允许开发出一种新的经过验证的瞬态模型，该模型具有更高的准确性，可用于将来的分析。