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FLARE - ATLAS Detector Operation and Upgrades at the CERN Large Hadron Collider (LHC)

English title FLARE - ATLAS Detector Operation and Upgrades at the CERN Large Hadron Collider (LHC)
Applicant Iacobucci Giuseppe
Number 160474
Funding scheme FLARE
Research institution Département de physique nucléaire et corpusculaire Université de Genève
Institution of higher education University of Geneva - GE
Main discipline Particle Physics
Start/End 01.04.2015 - 30.06.2017
Approved amount 1'460'100.00
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Keywords (2)

Elementary particle physics; LHC-ATLAS-silicon tracker-LHC-Upgrade

Lay Summary (Italian)

Lead
Questa sovvenzione FLARE riguarda l'esperimento ATLAS al collider LHC del CERN per il periodo aprile 2015 - marzo 2017.
Lay summary

I gruppi di ricerca in fisica delle alte energie delle Università di Ginevra e Berna sono tra i membri fondatori dell’esperimento ATLAS al Large Hadron Collider (LHC) del CERN, esperimento che ha recentemente fatto la scoperta del bosone di Higgs insieme a CMS. Questi gruppi sono fortemente implicati nella calibrazione del rivelatore, nella acquisizione dei dati e nella loro analisi alla ricerca di nuova fisica. In parallelo i gruppi esercitano un ruolo primario nella realizzazione degli upgrades del rivelatore ATLAS in vista dei programmi futuri dell’LHC:

- Recentemente, Berna e Ginevra hanno avuto un ruolo primario nella realizzazione dell’Insertable B-Layer (IBL), un quarto layer di rivelatore a pixel di silicio che e` stato costruito nei laboratori dell’Università di Ginevra grazie ai finanziamenti dell’SNSF; l’IBL e` stato istallato in ATLAS nel corso del 2014 ed e` ora pronto alla presa dati.

- A medio termine, i gruppi svizzeri sono impegnati nell’upgrade del sistema di readout dell’attuale rivelatore di pixel al silicio e nella realizzazione dell’FTK, un nuovo sistema di selezione online di particelle cariche che permetterà una maggiore efficienza nella raccolta dati degli eventi più interessanti prodotti dalle collisioni tra i fasci di protoni dell’LHC.

- A lungo termine, tra il 2025 ed il 2035, si prevede un programma di upgrade dell’LHC chiamato High Luminosity LHC, che permetterà di aumentare di un ordine di grandezza la quantità di dati utili per la ricerca di nuovi fenomeni fondamentali. L’R&D per una nuova generazione di rivelatori di particelle per questa fase futura e` già` in corso. I gruppi svizzeri di Ginevra e Berna, col supporto dell’SNSF, sono in procinto di sviluppare un nuovo tipo di rivelatori al silicio (chiamati HV-CMOS) che permetteranno forti economie su grande scala, e di conseguenza potrebbero avere un impatto in molti campi tecnologici, per esempio in applicazioni fisica medica.

 

 

Direct link to Lay Summary Last update: 28.03.2015

Responsible applicant and co-applicants

Employees

Associated projects

Number Title Start Funding scheme
173601 FLARE - ATLAS Detector Operation and Phase-II Upgrade at the CERN Large Hadron Collider (LHC) 01.04.2017 FLARE
156083 High-Energy Hadron Interactions: ATLAS at the CERN LHC 01.10.2014 Project funding
169015 Exploring the high energy frontier and searches for new physics with the ATLAS detector and its upgrades 01.10.2016 Project funding
147465 FLARE - ATLAS Detector Operation and Upgrades at the CERN Large Hadron Collider (LHC) 01.04.2013 FLARE
149246 Teilchenphysik-Experimente und Entwicklung von Teilchen-Detektoren 01.10.2013 Project funding
169000 High-Energy Hadron Interactions: ATLAS at the CERN LHC 01.10.2016 Project funding
169025 New physics searches with b-tagging, top-tagging and machine learning, and HL-LHC pixel upgrade using ATLAS at LHC 01.10.2016 Project funding
164029 A probe system for novel silicon detectors for the High-Luminosity LHC, astroparticle experiments in space and medical applications 01.06.2016 R'EQUIP
173598 FLARE: Maintenance & Operation for the LHC Experiments 2017-2020 01.04.2017 FLARE
166914 FLARE: Maintenance & Operation for the LHC Experiments 2016 01.04.2016 FLARE
147465 FLARE - ATLAS Detector Operation and Upgrades at the CERN Large Hadron Collider (LHC) 01.04.2013 FLARE
150583 Searches for New Massive Particles in the Highest Energy Regime at the Large Hadron Collider 01.10.2014 SNSF Professorships

Abstract

This FLARE funding request follows the FLARE grant 20FL20_147465 and concerns the ATLAS experiment at the LHC at CERN for the period April 2015 - March 2017.The ATLAS detector has operated extremely well during the 2011-2012 data taking period, with 94% of collisions collected as good quality data to disk during stable beam conditions. To date, 360 physics analyses involving collision data have been published or submitted for publication to refereed journals. This proves the great success of the collaboration in building, operating, and calibrating the detector, as well as in data analysis. The physics outcome is outstanding and ranges from precision tests of the Standard Model to a plethora of searches for new physics. A new boson with mass around 126 GeV has been discovered together with the CMS experiment, which shows properties consistent with those of the Standard Model Higgs boson. This result opens a new chapter in the study of the mechanism of electroweak-symmetry breaking. The Bern and Geneva groups are founding members of the ATLAS Collaboration. They had a major role in the construction of the detector, in particular for the silicon-strip detector, the liquid-argon and hadron calorimeter readout, the trigger and data acquisition. The Swiss groups are also strongly involved in the operation of the detector and the analysis of the data. The studies we perform range through all LHC-physics fields: from Standard Model and top-quark related measurements, to the searches for the Higgs boson, and to searches for SuperSymmetry and physics Beyond the Standard Model. In addition, members of the groups have responsibilities in all fields, from the trigger to the data analysis and detector upgrades.The LHC went through a long shutdown in 2013 and 2014 to allow the magnet interconnections and other repairs that are necessary to operate the LHC at the design centre-of-mass energy of 14 TeV. The ATLAS detector was subject to a series of consolidations and repairs. The most important activity of this period has been the Insertable Barrel Layer (IBL), a fourth pixel-detector layer now successfully installed between the innermost layer of the pixel detector and a new, smaller radius, beryllium beampipe. Bern and Geneva have a central role in this activity, and have been responsible for the assembly of the IBL staves and of the staves around the new beam pipe and ave presently important responsibilities in the commissioning of the IBL.Data taking will restart in 2015, for three years of collisions at design energy, which should provide ATLAS with an integrated luminosity of ~100 fb^-1. The LHC schedule presently foresees 2 major accelerator upgrades beyond 2015:- a 1-year shutdown in 2018 (Phase-I upgrade) to allow operation at luminosities of 2-3 10^34 cm^-2s^-1, with pileup of 55-80 events/bunch-crossing and a total integrated luminosity of 300-400 fb^-1 to be collected in three years. A Letter of Intent has been approved by the LHCC and RRB, as well as the TDR's of the detector upgrades. The Swiss groups have major responsibilities in the Fast Tracker (FTK) and in the upgrade of the optical links of the layers 1 and 2 of the Pixel detector;- a 2-year shutdown from 2023 (Phase-II upgrade) to allow 5-7x 10^34 cm^-2s^-1, with pileup of 140-200 events and a luminosity of 3000 fb^-1 to be collected in the following ten years. This will entail major detector upgrades, including the full replacement of the Inner Tracker. The Swiss groups are among the main proponents and developers of the innovative HV-CMOS technology for strip and pixel silicon detectors.
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