CERN Accelerating science

Article
Report number	arXiv:2212.03392 ; FERMILAB-PUB-22-916-AD
Title	Optical Transmission Characterization of Fused Silica Materials Irradiated at the CERN Large Hadron Collider
Author(s)	Yang, S. (Illinois U., Urbana) ; Tate, A. (Illinois U., Urbana) ; Longo, R. (Illinois U., Urbana) ; Gilarte, M. Sabate (CERN) ; Cerutti, F. (CERN) ; Mazzoni, S. (CERN) ; Grosse Perdekamp, M. (Illinois U., Urbana) ; Bravin, E. (CERN) ; Citron, Z. (Ben Gurion U. of Negev) ; Kühn, B. (Bitfabrik, Rodgau) ; Nürnberg, F. (Bitfabrik, Rodgau) ; Cole, B. (Columbia U. ; Nevis Labs, Columbia U.) ; Fritchie, J. (Illinois U., Urbana) ; Gelber, I. (Ben Gurion U. of Negev) ; Hoppesch, M. (Illinois U., Urbana) ; Jackobsen, S. (CERN) ; Koeth, T. (Maryland U.) ; Lantz, C. (Illinois U., Urbana) ; MacLean, D. (Illinois U., Urbana ; Fermilab) ; Mignerey, A. (Maryland U.) ; Murray, M. (Kansas U.) ; Palm, M. (CERN) ; Phipps, M. (Illinois U., Urbana) ; Popescu, S. (Kansas U. ; Bucharest, IFIN-HH) ; Santiago, N. (Illinois U., Urbana) ; Shenkar, S. (Ben Gurion U. of Negev) ; Steinberg, P. (Brookhaven)
Publication	2023-07-07
Imprint	2022-12-06
Number of pages	29
Note	29 pages, 15 figures, to be submitted to NIM-A
In:	Nucl. Instrum. Methods Phys. Res., A 1055 (2023) 168523
DOI	10.1016/j.nima.2023.168523 (publication)
Subject category	physics.ins-det ; Detectors and Experimental Techniques
Abstract	The Target Absorbers for Neutrals (TANs) represent one of the most radioactive regions in the Large Hadron Collider (LHC). 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 the 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.
Copyright/License	publication: © 2023-2024 Elsevier B.V. preprint: (License: arXiv nonexclusive-distrib 1.0)

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