Cremonini, D. (2023) Characterization of new photomultipliers and fibers for the LUCID-3 prototypes for HL-LHC. Il nuovo cimento C, 46 (4). pp. 1-4. ISSN 1826-9885
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Abstract
LUCID-2, the main luminometer of the ATLAS experiment, guaranteed a precision of 1% and a time stability of about 1% during LHC Run-2. Similar performances are expected for Run-3 as well. Due to the higher pile-up and radiation damage, a new LUCID is needed to fulfill the requirements of Run-4. New photomultipliers (PMTs) and fibers have been installed in ATLAS as LUCID-3 prototypes and are evaluated for their use in Run-4. The first results of this characterization campaign are presented. The newly proposed PMTs generate shorter signals compared to LUCID-2 PMTs and the current readout system is not able to digitize them optimally. A fiber irradiation session was performed to estimate the radiation damage during Run-4. A larger loss was observed in the UV region with respect to the visible region, leading to a modification of the fiber prototype installed.
| Item Type: | Article |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 29 Jan 2024 12:36 |
| Last Modified: | 29 Jan 2024 12:36 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/22663 |
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