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CERN Document Server 236 записей найдено  1 - 10следующийконец  перейти к записи: Поиск длился 1.02 секунд. 
1.
Shielded Pair Method for Beam Screen Surface Resistance Measurement at Cryogenic Temperature / Brunner, Kristóf (CERN ; Wigner RCP, Budapest) ; Krkotić, Patrick (CERN) ; Calatroni, Sergio (CERN) ; Barna, Dániel (Wigner RCP, Budapest)
The shielded pair resonator method is a useful tool in the measurement of accelerator components, such as the beam screens used in the Large Hadron Collider (LHC), the High-Luminosity (HL) LHC, or future accelerators. It can measure the resistive losses at several frequency points by separating the resistive losses on the sample from other sources of losses. [...]
2024 - 14 p. - Published in : Instruments 8 (2024) 43 Fulltext: PDF;
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2.
MuCol Milestone Report No. 5: Preliminary Parameters / MuCoL Collaboration
This document is comprised of a collection of updated preliminary parameters for the key parts of the muon collider. [...]
arXiv:2411.02966. -
Fermilab Library Server - Fulltext - Fulltext
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3.
Understanding of the LHC warm vacuum module heating / Krkotic, Patrick (CERN) ; Baglin, Vincent (CERN) ; Chiggiato, Paolo (CERN) ; Papaphilippou, Yannis (CERN) ; Rumolo, Giovanni (CERN) ; Antuono, Chiara (CERN ; Rome U.) ; Bregliozzi, Giuseppe (CERN) ; Calatroni, Sergio (CERN) ; de la Fuente, Elena (CERN ; Madrid, Polytechnic U.) ; Galloro, Alessio (Calabria U. ; CERN) et al.
During the third run of the Large Hadron Collider in 2023, which had the highest intensity bunch population compared to previous runs, increased losses attributed to pressure spikes within a warm vacuum sector triggered a beam dump. Subsequent inspections revealed localised annealing and plasticisation of the tension spring in the sliding contact radio-frequency finger module, alongside traces of vapour deposition on the various module components with the stainless-steel spring material. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) TUAN3 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUAN3
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4.
Cover not available Interim report for the International Muon Collider Collaboration / Accettura, C.
The International Muon Collider Collaboration (IMCC) [1] was established in 2020 following the recommendations of the European Strategy for Particle Physics (ESPP) and the implementation of the European Strategy for Particle Physics-Accelerator R&D Roadmap by the Laboratory Directors Group [2], [...]
arXiv:2407.12450 ; CERN-2024-002 - Geneva : CERN, 2024-09-30 - 150. (CERN Yellow Reports: Monographs ; 2/2024)


e-book
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5.
Split-cavity tuning of a rectangular axion haloscope operating around 8.4 GHz / Golm, Jessica (CERN ; Jena U.) ; García-Barceló, Jose María (Munich, Max Planck Inst.) ; Arguedas Cuendis, Sergio (CERN) ; Calatroni, Sergio (CERN) ; Wuensch, Walter (CERN) ; Döbrich, Babette (Munich, Max Planck Inst.)
The axion haloscope is the currently most sensitive method to probe the vanishingly small coupling of this prominent Dark Matter candidate to photons. To scan a sizeable axion Dark Matter parameter space, the cavities that make up the haloscope need to be tuned efficiently. [...]
arXiv:2312.13109.- 2024-04-09 - 20 p. - Published in : Front. Phys. 12 (2024) 1372846 Fulltext: document - PDF; 2312.13109 - PDF;
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6.
Investigation on different materials after pulsed high field conditioning and low-energy H- irradiation / Serafim, Catarina (CERN ; Helsinki U.) ; Peacock, R. (CERN) ; Calatroni, S. (CERN) ; Djurabekova, F. (Helsinki U.) ; Perez Fontenla, A.T. (CERN) ; Wuensch, W. (CERN) ; Sgobba, S. (CERN) ; Grudiev, A. (CERN) ; Lombardi, A. (CERN) ; Sargsyan, E. (CERN) et al.
During operation, the radio-frequency quadrupole (RFQ) of the LINAC4 at CERN is exposed to high electric fields, which can lead to vacuum breakdown. It is also subject to beam loss, which can cause surface modification, including blistering, which can result in reduced electric field holding and an increased breakdown rate. [...]
arXiv:2410.00084.- 2024-02-21 - 8 p. - Published in : Front. Phys. 12 (2024) 1308455 Fulltext: fphy-12-1308455 (3) - PDF; 2410.00084 - PDF;
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7.
Nonlinear Surface Impedance of HTS in High Magnetic Fields / Vaglio, Ruggero (CNR-SPIN, Naples) ; Krkotić, Patrick (CERN) ; Calatroni, Sergio (CERN)
Recently envisaged high-temperature superconductor (HTS) applications rely on their radio-frequency properties in very high magnetic fields. As an example, coating of surfaces facing particle beams with HTS for reducing the beam coupling impedance is being considered for the next generation of hadron colliders, such as the FCC-hh at CERN, where HTS would be exposed to the high-frequency wakefields generated by the particle bunches and to the strong field (>16 T) of the steering magnets. [...]
2024 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 3500604 Fulltext: PDF;
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8.
Growth of Nb films on Cu for superconducting radio frequency cavities by direct current and high power impulse magnetron sputtering: A molecular dynamics and experimental study / Ghaemi, M (Helsinki Inst. of Phys.) ; Lopez-Cazalilla, A (Helsinki Inst. of Phys.) ; Sarakinos, K (Helsinki U. ; Royal Inst. Tech., Stockholm) ; Rosaz, G J (CERN) ; Carlos, C P A (CERN) ; Leith, S (CERN) ; Calatroni, S (CERN) ; Himmerlich, M (CERN) ; Djurabekova, F (Helsinki Inst. of Phys.)
The use of superconducting radio frequency (rf) cavities in particle accelerators necessitates that copper (Cu) surfaces are coated by thin niobium (Nb) films, predominantly synthesized by magnetron sputtering. A key feature of the rf cavities is that they exhibit a complex three-dimensional geometry, such that during Nb film growth vapor is not deposited on a flat substrate [...]
2024 - 11 p. - Published in : Surf. Coat. Technol. 476 (2024) 130199 Fulltext: PDF;
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9.
RADES axion search results with a High-Temperature Superconducting cavity in an 11.7 T magnet / Ahyoune, S. (ICC, Barcelona U.) ; Álvarez Melcón, A. (Cartagena Politecnica U.) ; Cuendis, S. Arguedas (ICC, Barcelona U.) ; Calatroni, S. (CERN) ; Cogollos, C. (Garching, Max Planck Inst.) ; Díaz-Morcillo, A. (Cartagena Politecnica U.) ; Döbrich, B. (Garching, Max Planck Inst.) ; Gallego, J.D. (Yerkes Observ.) ; García-Barceló, J.M. (Garching, Max Planck Inst.) ; Gimeno, B. (Valencia U., IFIC) et al.
We describe the results of a haloscope axion search performed with an 11.7 T dipole magnet at CERN. [...]
arXiv:2403.07790 ; CERN-EP-2024-076 ; MPP-2024-55. - 2024. - 19 p.
Full text - Draft (restricted) - Fulltext
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10.
Laser-induced periodic surface structuring for secondary electron yield reduction of copper: dependence on ambient gas and wavelength / Nivas, Jijil JJ (INFN, Naples ; Naples U. ; U. Naples (main) ; CNR-SPIN, Naples) ; Hu, Meilin (U. Naples (main)) ; Valadan, Mohammadhassan (INFN, Naples ; Naples U.) ; Salvatore, Marcella (U. Naples (main) ; Naples U.) ; Fittipaldi, Rosalba (INFN, Naples ; Naples U. ; U. Salerno (main)) ; Himmerlich, Marcel (CERN) ; Bez, Elena (CERN ; Leipzig U.) ; Rimoldi, Martino (CERN) ; Passarelli, Andrea (INFN, Naples ; Naples U.) ; Oscurato, Stefano L (U. Naples (main)) et al.
One of the main limitations for future high-performance accelerators operating with positively charged particles is the formation of an electron-cloud inside the beam vacuum chamber, giving rise to instabilities. The Secondary Electron Yield (SEY) of the beam-facing surfaces gives a measure of the mechanism which drives this phenomenon. [...]
2023 - 11 p. - Published in : Appl. Surf. Sci. 622 (2023) 156908 Fulltext: PDF;
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CERN Document Server : 236 записей найдено   1 - 10следующийконец  перейти к записи:
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120 Calatroni, Sergio
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