Abstract
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 during data taking from 2016 to 2018 at the LHC. The peak dose delivered to the fused silica rods was 18 MGy. We report measurements of the activation 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 maximum activity observed was corresponding to a density, , of nuclei. fluka Monte Carlo simulations have been performed by the CERN fluka team to estimate activities for the irradiated BRAN rod samples. The simulations reproduce the activity profile measured along the rods, with a 35% underestimation of the experimental measurement results.
7 More- Received 7 April 2022
- Accepted 26 July 2022
DOI:https://doi.org/10.1103/PhysRevAccelBeams.25.091001
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Published by the American Physical Society