Optical transmission characterization of fused silica materials irradiated at the CERN Large Hadron Collider

Optical transmission characterization of fused silica materials irradiated at the CERN Large Hadron Collider
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CERN 大型强子对撞机辐照的熔融石英材料的光传输特性

DOI:
10.1016/j.nima.2023.168523
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发表时间:
2023
期刊:
Detectors and Associated Equipment
影响因子:
--
通讯作者:
Kühn, B.
Kühn, B.
中科院分区:
--
文献类型:
--
作者:
Yang, S.;Tate, A.;Longo, R.;Sabate Gilarte, M.;Cerutti, F.;Mazzoni, S.;Grosse Perdekamp, M.;Bravin, E.;Citron, Z.;Kühn, B.

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摘要中子靶吸收区是大型强子对撞机中放射性最强的区域之一。七个40厘米长的熔融石英棒不同的掺杂剂规格,由贺利氏制造的,在位于ATLAS实验周围的一个TAN的中性束率(BRAN)检测器组进行辐照。该活动在运行2 p+ p数据采集期间进行,发生在2016年至2018年之间。本文报道了一个完整的表征每单位长度的辐照熔融石英材料的光传输作为波长(240 nm-1500 nm),剂量(高达18 MGy),和水平的OH和H2掺杂剂在制造过程中引入的功能。传递到棒的剂量是使用CERN FLUKA团队进行的Monte Carlo模拟来估计的。
Abstract The Target Absorbers for Neutrals (TANs) represent one of the most radioactive regions in the Large Hadron Collider. Seven 40 cm long fused silica rods with different dopant specifications, manufactured by Heraeus, were irradiated in one of the TANs located around the ATLAS experiment by the Beam RAte of Neutrals (BRAN) detector group. This campaign took place during Run 2 p+ p data taking, which occurred between 2016 and 2018. This paper reports a complete characterization of optical transmission per unit length of irradiated fused silica materials as a function of wavelength (240 nm–1500 nm), dose (up to 18 MGy), and level of OH and H 2 dopants introduced in the manufacturing process. The dose delivered to the rods was estimated using Monte Carlo simulations performed by the CERN FLUKA team.
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