Na22 activation level measurements of fused silica rods in the LHC target absorber for neutrals compared to simulations
Na22 activation level measurements of fused silica rods in the LHC target absorber for neutrals compared to simulations
复制标题
大型强子对撞机 (LHC) 目标吸收器中中性物质吸收器中熔融石英棒的 Na22 活化水平测量结果与模拟结果的比较
DOI：
10.1103/physrevaccelbeams.25.091001
复制
发表时间：
2022
影响因子：
1.7
通讯作者：
Lerner, G.
中科院分区：
文献类型：
--
作者：
Yang, S.;Gilarte, M. Sabate;Tate, A.;Santiago, N.;Longo, R.;Mazzoni, S.;Cerutti, F.;Bravin, E.;Perdekamp, M. Grosse;Lerner, G.
中子目标吸收器（TAN）位于大型强子对撞机（LHC）隧道内的高强度辐射环境中。TAN位于距离光束相互作用点下游约140 m处。在LHC 2016年至2018年的数据采集期间，通过中性束速率（BRAN）探测器组在TAN中照射了7根具有不同掺杂剂规格的40 cm长的熔融石英棒。输送到熔融石英棒的峰值剂量为18 MGy。我们报告的测量theactivation的熔融石英棒进行了在伊利诺伊大学厄巴纳-香槟分校和阿贡国家实验室。在辐照活动结束时，观察到的最大放射性对应于原子核的密度。CERN的fluka团队已经进行了fluka蒙特卡罗模拟，以估计辐照过的BRAN棒样品的放射性。模拟再现了沿着棒测量的活动轮廓，与实验测量结果相比低估了35%。
The Target Absorbers for Neutrals (TANs) are located in a high intensity radiation environment inside the tunnel of the Large Hadron Collider (LHC). TANs are positioned about 140 m downstream from the beam interaction points. Seven 40-cm long fused silica rods with different dopant specifications were irradiated in the TAN by the Beam RAte of Neutrals (BRAN) detector group duringdata taking from 2016 to 2018 at the LHC. The peak dose delivered to the fused silica rods was 18 MGy. We report measurements of theactivation of the fused silica rods carried out at the University of Illinois at Urbana-Champaign and Argonne National Laboratory. At the end of the irradiation campaign, the maximumactivity observed wascorresponding to a density,, ofnuclei.flukaMonte Carlo simulations have been performed by the CERNflukateam to estimateactivities for the irradiated BRAN rod samples. The simulations reproduce theactivity profile measured along the rods, with a 35% underestimation of the experimental measurement results.