费米实验室主注入器准直系统中丢失的8个GeV质子产生的簇射对铜和钢样品的活化产物
Activation Products from Copper and Steel Samples Exposed to Showers Produced by 8 GeV Protons Lost in the Fermilab Main Injector Collimation System
摘要：
在努力预测残留辐射水平在费米实验室主注入器，测量残留辐射与时间的历史损失。详细检查表明，用于拟合的放射性同位素清单不完整。我们将报告我们在费米实验室主注入器准直系统附近辐照的磁钢和铜样品的活化研究。我们的研究结果确定了几个额外的感兴趣的放射性同位素。使用简化模型的MARS 15研究与测量进行了比较。长半衰期同位素的重要性将随着操作延伸到第二个十年和损失率的上升而增加。这些研究使我们能够预测这些问题的局限性。
英文摘要：
In conjunction with efforts to predict residual radiation levels in the Fermilab Main Injector, measurements of residual radiation were correlated with the time history of losses. Detailed examination suggested that the list of radioactive isotopes used for fitting was incomplete. We will report on activation studies of magnet steel and copper samples which we irradiated adjacent to the Fermilab Main Injector collimation system. Our results identified several additional radioactive isotopes of interest. The MARS15 studies using a simplified model are compared with measurements. The long half-life isotopes will grow in importance as operation stretches to a second decade and as loss rates rise. These studies allow us to predict limits on these concerns.
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