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CERN Document Server 找到 393 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 0.61 秒. 
1.
Slow extracted spill ripple control in the CERN SPS using adaptive Bayesian optimisation / Kain, Verena (CERN) ; Effinger, Ewald (CERN) ; Follin, Fabio (CERN) ; Velotti, Francesco (CERN) ; Fraser, Matthew (CERN) ; Schenk, Michael (CERN) ; Madysa, Nico (Darmstadt, GSI) ; Arrutia Sota, Pablo Andreas (CERN)
The CERN Super Proton Synchrotron (SPS) offers slow-extracted, high-intensity proton beams at 400 GeV/c for 3 fixed targets in the CERN North Experimental Area (NA) with a spill length of about 5 seconds. Since first commissioning in the late seventies, the NA has seen a steady increase in users, many of which requiring improved spill quality control. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) TUPS55 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPS55
2.
Operational Tool for Automatic Setup of Controlled Longitudinal Emittance Blow-Up in the CERN SPS / Bruchon, Niky (CERN) ; Karpov, Ivan (CERN) ; Madysa, Nico (CERN ; Darmstadt, GSI) ; Papotti, Giulia (CERN) ; Quartullo, Danilo (CERN)
The controlled longitudinal emittance blow-up is necessary to ensure the stability of high-intensity LHC-type beams in the CERN SPS. It consists of diffusing the particles in the bunch core by injecting a bandwidth-limited noise into the beam phase loop of the main 200 MHz RF system. [...]
2023 - 6 p. - Published in : JACoW ICALEPCS 2023 (2023) TUPDP086 Fulltext: PDF;
In : 19th International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS 2023), Cape Town, South Africa, 7 - 13 Oct 2023, pp.TUPDP086
3.
Search for high-mass resonances in final states with a $\tau$-lepton and missing transverse momentum with the ATLAS detector / ATLAS Collaboration
A search for high-mass resonances decaying into a tau-lepton and a neutrino using proton–proton collisions at a center-of-mass energy of $\sqrt{s}= 13$ TeV is presented. The full Run 2 data sample corresponding to an integrated luminosity of 139 fb$^{-1}$ recorded by the ATLAS experiment in the years 2015-2018 is analyzed. [...]
arXiv:2402.16576; CERN-EP-2023-298.- Geneva : CERN, 2024-06-01 - 28 p. - Published in : Phys. Rev. D 109 (2024) 112008 Fulltext: 2402.16576 - PDF; Publication - PDF; External link: Previous draft version
4.
Performance of the Low Energy Ion Ring at CERN with lead ions in 2022 / Alemany-Fernandez, Reyes (CERN) ; Frassier, Alexandre (CERN) ; Rey, Anthony (CERN) ; Wetton, Chris (CERN) ; Mutin, Christophe (CERN) ; Gamba, Davide (CERN) ; Bodart, Dominique (CERN) ; Carlier, Felix (CERN) ; Velotti, Francesco (CERN) ; Le Godec, Gilles (CERN) et al.
2022 has been a performance consolidation year for the Low Energy Ion Ring (LEIR) at CERN that demonstrated its capability of delivering the target beam parameters required for high luminosity production in the LHC in a reproducible and reliable way. The main steps that have led to the high performance reach of this beam, together with the machine stability improvements deployed, are detailed in this paper..
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) TUPA151 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA151
5.
Multi-objective extremum seeking to control drifts in the transverse beam splitting efficiency of the multi-turn extraction at the CERN proton synchrotron / Uden, Cédric (CERN) ; Huschauer, Alexander (CERN) ; Pahl, Hannes (CERN) ; Schenk, Michael (CERN) ; Madysa, Nico (CERN) ; Kain, Verena (CERN)
Time-varying fluctuations of the intensity sharing between the islands and the core of the beam extracted via the CERN Proton Synchrotron (PS) Multi-Turn Extraction are the main effects that require manual adjustment for this beam type. To mitigate this, the application of an online controller is explored to further enhance both operational autonomy of the accelerator and physics performance. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) TUPA159 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA159
6.
Towards optics measurements with a new LEIR BPM system / Carlier, Felix (CERN) ; Alemany-Fernandez, Reyes (CERN) ; Biancacci, Nicolo (CERN) ; Jacquet, Delphine (CERN) ; Jensen, Steen (CERN) ; Levens, Thomas (CERN) ; Madysa, Nico (CERN) ; Marqversen, Ole (CERN)
The LHC Injector Upgrade (LIU) programme forms a cornerstone of the High-Luminosity LHC project. Among its targets, a new Beam Position Monitor (BPM) system has been deployed in the Low Energy Ion Ring (LEIR) to facilitate optics measurements. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) TUPA150 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA150
7.
Advancements in injection efficiency modelling for the Low Energy Ion Ring (LEIR) at CERN / Biancacci, Nicolo (CERN) ; Bodart, Dominique (CERN) ; Bellodi, Giulia (CERN) ; Bozzolan, Michele (CERN) ; Madysa, Nico (CERN) ; Meruga, Phani Deep (CERN) ; Alemany-Fernandez, Reyes (CERN) ; Scrivens, Richard (CERN)
The performance of the Low Energy Ion Ring (LEIR) at CERN is mainly determined by the number of charges extracted from the machine and transferred to the downstream chain of accelerators. While the required target of 9e10 charges has now been surpassed, a series of studies have been undertaken to further push the intensity reach of LEIR. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) MOPL016 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL016
8.
Performance of the Low Energy Ion Ring at CERN with Lead Ions in 2022 / Alemany Fernandez, Reyes (CERN) ; Albright, Simon (CERN) ; Angoletta, Maria Elena (CERN) ; Bellodi, Giulia (CERN) ; Biancacci, Nicolo (CERN) ; Bodart, Dominique (CERN) ; Bozzolan, Michele (CERN) ; Carlier, Felix Simon (CERN) ; Meruga, Phani Deep (Sapienza Universita e INFN, Roma I (IT)) ; Dolenc, Miha (CERN) et al.
2022 was a performance consolidation year for the Low Energy Ion Ring (LEIR) at CERN that demonstrated its capability of delivering the target beam parameters required for high luminosity production in the LHC in a reproducible and reliable way. [...]
CERN-ACC-NOTE-2023-0017.
- 2023.
Full text
9.
Search for quantum black hole production in lepton+jet final states using proton--proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector / ATLAS Collaboration
A search for quantum black holes in electron+jet and muon+jet invariant mass spectra is performed with 140 $fb^{-1}$ of data collected by the ATLAS detector in proton--proton collisions at $\sqrt{s}$ = 13 TeV at the Large Hadron Collider. The observed invariant mass spectrum of lepton+jet pairs is consistent with Standard Model expectations. [...]
arXiv:2307.14967; CERN-EP-2023-117.- Geneva : CERN, 2024-02-01 - 28 p. - Published in : 10.1103/PhysRevD.109.032010 Fulltext: EXOT-2018-14-002 - PDF; 2307.14967 - PDF; External link: Previous draft version
10.
Search for single vector-like $B$ quark production and decay via $B\rightarrow bH(b\bar{b})$ in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search is presented for single production of a vector-like $B$ quark decaying into a Standard Model $b$-quark and a Standard Model Higgs boson, which decays into a $b\bar{b}$ pair. The search is carried out in 139 fb$^{-1}$ of $\sqrt{s} = 13$ TeV proton-proton collision data collected by the ATLAS detector at the LHC between 2015 and 2018. [...]
arXiv:2308.02595; CERN-EP-2023-091.- 2023-11-23 - 52 p. - Published in : JHEP 2023 (2020) 168 Fulltext: EXOT-2019-04-002 - PDF; 2308.02595 - PDF; ANA-EXOT-2019-04-PAPER - PDF; Publication - PDF; External link: Previous draft version

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