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The Interface and Control System of the Upgraded HVOpto/HVRemote Card of the Ti...
Augusto, José Soares; Rato, C.; Gurriana, L.; Seabra, L.; Gomes, A.; Evans, Guiomar; Maio, A.To comply with the increase in luminosity of the LHC (Large Hadron Collider) in the next decades, the electronics of the ATLAS (A Toroidal LHC Apparatus) experiment is being upgraded. Included in the upgrade is the interfacing and control electronics system of the HVOpto/HVRemote cards in the TileCal (Tile Calorimeter) detector, which provides high voltages to about 104 photomultipliers (PMTs). This paper prese...
The ALFA Roman Pot Detectors of ATLAS
Abdel Khalek, S. et al. (46 authors); Conde Muíño, P.; Gurriana, L.; Maio, A.; Maneira, M.J.P.; Palma, A.; Seabra, L.; Wemans, A.The ATLAS Roman Pot system is designed to determine the total proton-proton cross section as well as the luminosity at the Large Hadron Collider (LHC) by measuring elastic proton scattering at very small angles. The system is made of four Roman Pot stations, located in the LHC tunnel in a distance of about 240 m at both sides of the ATLAS interaction point. Each station is equipped with tracking detectors, inse...
The LED and fiber based calibration system for the photomultiplier array of SNO+
SNO+ collaboration (22 authors); Seabra, L.; Alves, R.; Andringa, S.; Carvalho, J.; Gurriana, L.; Maio, A.; Maneira, J.A new external LED/fiber light injection calibration system was designed for the calibration and monitoring of the photomultiplier array of the SNO+ experiment at SNOLAB. The goal of the calibration system is to allow an accurate and regular measurement of the photomultiplier array's performance, while minimizing the risk of radioactivity ingress. The choice in SNO+ was to use a set of optical fiber cables to c...
The calibration system for the photomultiplier array of the SNO+ experiment
SNO+ collaboration (23 authors); Alves, R.; Andringa, S.; Carvalho, J.; Chauhan, D.; Gurriana, L.; Maio, A.; Maneira, J.; Seabra, L.A light injection system using LEDs and optical fibres was designed for the calibration and monitoring of the photomultiplier array of the SNO+ experiment at SNOLAB. Large volume, non-segmented, low-background detectors for rare event physics, such as the multi-purpose SNO+ experiment, need a calibration system that allow an accurate and regular measurement of the performance parameters of their photomultiplier...