Data for: Response Function Generation for Cerenkov Radiation Production and Transport in a TRIGA Coolant Channel

The attached table shows the correlation factors for the amount of visible Cerenkov radiation observed 2m above the core midplane produced by electrons in a segment with energies within a specified range. Only electrons within the segment and energy range contribute to the Cerenkov total for each factor. A separate MCNP deck was run for each energy bin and spatial bin, such that electrons are spawned in the region with an energy distribution in the energy bin and electrons that leave the region or drop below the energy cutoff of the bin are killed. The method of obtaining the factors is described the section of the article labeled: Electron to Cerenkov Flux Response Function Generation.
The segment number and the z position of the upper bound and lower bound of each segment are shown in the first 3 columns. The minimum and maximum energy for each electron energy bin are shown the fourth and fifth columns. The sixth column, labeled P_flux/E_flux, shows the ratio of the photon flux 2m above the core caused by electrons in the segment and energy bin to the flux of electrons in that bin. The seventh column has the relative Monte Carlo uncertainty, which is the uncertainty obtained by propagating the uncertainties output from MCNP for the photon flux and electron flux. The bottommost (segment 1) and topmost (segment 16) segments were not run correctly in the simulations due to the geometrical cutoff. These two segments instead use duplicated data for the E_flux/P_flux from segments 2 and 15. This adds a very little error when implemented because the difference between neighboring segments is small, and the contribution of the end segments to the total is a small portion of the whole, due to the lower gamma and electron fluxes further from the core midplane.

附表展示了在指定能量范围内的电子在截面内产生的、位于核心中平面上方2米处可观测到的可见切伦科夫辐射的相关系数。仅位于截面和能量范围内的电子对每个系数的切伦科夫总量有所贡献。对于每个能量范围和空间范围，均单独运行了MCNP计算卡，以确保电子在能量范围区域内生成，且能量分布符合该能量范围，离开该区域或低于该范围能量截止值的电子将被终止。获得这些系数的方法在文章中“电子至切伦科夫通量响应函数生成”一节中进行了描述。前三列显示了每个截面的编号以及上下边界段的z位置。第四和第五列显示了每个电子能量范围的最小和最大能量。第六列标记为P通量/E通量，显示了由截面和能量范围内的电子在核心上方2米处引起的光子通量与该范围内的电子通量的比率。第七列显示了相对蒙特卡洛不确定性，这是通过传播MCNP输出的光子通量和电子通量的不确定性而获得的。由于几何截止原因，在模拟中最低段（段1）和最高段（段16）未能正确运行，因此这两个段使用来自段2和段15的E通量/P通量重复数据。由于相邻段之间的差异很小，且由于远离核心中平面的较低伽马和电子通量，这两个端段对总量的贡献仅为整个量的一小部分，因此这种数据重复实施时引入的误差非常小。