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Muon background minimisation using the second achromat of the NA62-BD experiment
/ Murphy, Robert (CERN ; Royal Holloway, U. of London) ; Banerjee, Dipanwita (CERN) ; Baratto Roldan, Anna (CERN) ; Bernhard, Johannes (CERN) ; Boogert, Stewart (Royal Holloway, U. of London) ; Brugger, Markus (CERN) ; Charitonidis, Nikolaos (CERN) ; D'Alessandro, Gian Luigi (CERN ; Royal Holloway, U. of London) ; Deniaud, Marin (Royal Holloway, U. of London) ; Dyks, L A (CERN) et al.
The K12 beam line and NA62 experiment in the North Area at CERN in beam dump mode exploits the interactions of 400 GeV protons with a movable dump-collimator, the so-called XTAX. Such interactions are theorised to generate potential light dark matter candidates such as the axion. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) TUPM071
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPM071
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BDSIM v1.7.0 developments for the modelling of accelerators and their environment
/ Nevay, L J (CERN) ; Abramov, A (CERN) ; Hernalsteens, C (CERN) ; Shields, W (Royal Holloway, U. of London) ; Alden, S (Royal Holloway, U. of London) ; Gibson, S M (Royal Holloway, U. of London) ; Lefebvre, H (Royal Holloway, U. of London) ; Boogert, S T (Liverpool U.) ; Gnacadja, E (Brussels U.) ; Ramoisiaux, E (Brussels U.) et al.
Beam Delivery Simulation (BDSIM) is a program based on Geant4 that creates 3D radiation transport models of accelerators from a simple optical description in a vastly reduced time with great flexibility. It also uses ROOT and CLHEP to create a single simulation model that can accurately track all particles species in an accelerator to predict and understand beam losses, secondary radiation, dosimetric quantities and their origins. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPA074
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPA074
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Evidence for the charge asymmetry in $pp \rightarrow t\bar{t}$ production at $\sqrt{s}= 13$ TeV with the ATLAS detector
/ ATLAS Collaboration
Inclusive and differential measurements of the top-antitop ($t\bar{t}$) charge asymmetry $A_\text{C}^{t\bar{t}}$ and the leptonic asymmetry $A_\text{C}^{\ell\bar{\ell}}$ are presented in proton-proton collisions at $\sqrt{s} = 13$ TeV recorded by the ATLAS experiment at the CERN Large Hadron Collider. The measurement uses the complete Run 2 dataset, corresponding to an integrated luminosity of 139 fb$^{-1}$, combines data in the single-lepton and dilepton channels, and employs reconstruction techniques adapted to both the resolved and boosted topologies. [...]
arXiv:2208.12095; CERN-EP-2022-166.-
Geneva : CERN, 2023-08-16 - 68 p.
- Published in : JHEP 2308 (2023) 077
Fulltext: document - PDF; 2208.12095 - PDF; External link: Previous draft version
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The HL-LHC Beam Gas Vertex Monitor - Performance and Design Optimisation Using Simulations
/ Kolbinger, Bernadette (CERN) ; Gibson, Stephen M (Royal Holloway, U. of London) ; Guerin, Helene (CERN ; Royal Holloway, U. of London) ; Jones, Owain Rhodri (CERN) ; Kieffer, Robert (Royal Holloway, U. of London) ; Lefèvre, Thibaut (CERN) ; Salzburger, Andreas (CERN) ; Storey, James W (CERN) ; Veness, Raymond (CERN) ; Zamantzas, Christos (CERN)
The Beam Gas Vertex (BGV) instrument is a novel non-invasive beam profile monitor and part of the High Luminosity Upgrade of the Large Hadron Collider (LHC) at CERN. Its aim is to continuously measure emittance and transverse beam profile throughout the whole LHC cycle, which has not yet been achieved by any other single device in the machine. [...]
JACoW, 2021 - 5 p.
- Published in : JACoW IBIC 2021 (2021) 249-253
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.249-253
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The HL-LHC Beam Gas Vertex Monitor - Simulations for Design Optimisation and Performance Study
/ Guerin, Helene (CERN ; Royal Holloway, U. of London) ; Gibson, Stephen M (Royal Holloway, U. of London) ; Jones, Owain Rhodri (CERN) ; Kieffer, Robert (Royal Holloway, U. of London) ; Kolbinger, Bernadette (CERN) ; Lefèvre, Thibaut (CERN) ; Salvant, Benoit (CERN) ; Storey, James W (CERN) ; Veness, Raymond (CERN) ; Zamantzas, Christos (CERN)
The Beam Gas Vertex (BGV) instrument is a non-invasive transverse beam profile monitor being designed as part of the High Luminosity Upgrade of the LHC (HL-LHC) at CERN. Its aim is to continuously measure bunch-by-bunch beam profiles, independent of beam intensity, throughout the LHC cycle. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2120-2123
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2120-2123
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Target Bypass Beam Optics for Future High Intensity Fixed Target Experiments in the CERN North Area
/ D'Alessandro, Gian Luigi (CERN ; JAI, UK) ; Banerjee, Dipanwita (CERN) ; Bernhard, Johannes (CERN) ; Brugger, Markus (CERN) ; Doble, Niels (CERN ; Mainz U.) ; Gatignon, Laurent (CERN ; Lancaster U.) ; Gerbershagen, Alexander (CERN) ; Gibson, Stephen M (JAI, UK) ; Rae, Bastien (CERN) ; Velotti, Francesco M (CERN)
Several of the proposed experiments for operation at the K12 beam line would profit from significant beam intensity increase. Among those, there is the KLEVER experiment that would require an intensity of 2x10¹³ protons per 4.8 s long spill. [...]
Geneva : JACoW, 2021 - 3 p.
- Published in : JACoW IPAC 2021 (2021) 3046-3048
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3046-3048
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Studies for the K12 High-Intensity Kaon Beam at CERN
/ D'Alessandro, Gian Luigi (CERN ; JAI, UK) ; Banerjee, Dipanwita (CERN) ; Bernhard, Johannes (CERN) ; Boogert, Stewart T (JAI, UK) ; Brugger, Markus (CERN) ; Doble, Niels (CERN ; Mainz U.) ; Gatignon, Laurent (CERN ; Lancaster U.) ; Gerbershagen, Alexander (CERN) ; Gibson, Stephen M (JAI, UK) ; Marchevski, Radoslav (CERN ; Mainz U.) et al.
The NA62 experiment is a fixed target experiment located in the North Area of CERN and has as main goal the measurement of the branching ratio of the rare decay K±>pi+vv. The primary proton beam from the SPS accelerator interacts with the T10 beryllium target and the generated 75 GeV/c secondary particles, containing about 6% of positive kaons, are transported by the K12 beamline to the NA62 experiment. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 3049-3052
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3049-3052
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