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Investigating the Superconducting Properties and Surface Morphology of Sputtered Nb Films on Cu Due to Laser Treatment
/ Turner, Daniel Andrew (Lancaster U.) ; Malyshev, O B (Cockcroft Inst. Accel. Sci. Tech.) ; Burt, G (Lancaster U.) ; Seiler, E (Bratislava, Inst. Phys.) ; Ries, R (Bratislava, Inst. Phys.) ; Medvids, A (Riga Tech. U.) ; Onufrijevs, P (Riga Tech. U.) ; Valizadeh, R (Cockcroft Inst. Accel. Sci. Tech.) ; Sublet, A (CERN) ; Pira, C (INFN, Legnaro) et al.
Bulk niobium is currently the material of choice for superconducting radio frequency (SRF) cavities and is a well matured process. However, it is possible that SRF cavities could be further improved beyond bulk Nb by sputtering thin Nb films onto Cu cavities. [...]
2023 - 12 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 1-12
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Hyperon signatures in the PANDA experiment at FAIR
/ PANDA Collaboration
We present a detailed simulation study of the signatures from the sequential decays of the triple-strange pbar p -> Ω+Ω- -> K+ΛbarK- Λ -> K+pbarπ+K-pπ- process in the PANDA central tracking system with focus on hit patterns and precise time measurement. [...]
arXiv:2304.11977.
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29 p.
Fulltext
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Magnetic Field Penetration of Niobium Thin Films Produced by the ARIES Collaboration
/ Turner, Daniel (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U. (main)) ; Burt, Graeme (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U. (main)) ; Chyhyrynets, Eduard (INFN, Legnaro) ; Dumbell, Keith (Cockcroft Inst. Accel. Sci. Tech. ; Daresbury) ; Junginger, Tobias (TRIUMF ; U. Victoria (main)) ; Leith, Stewart (U. Siegen (main)) ; Malyshev, Oleg (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Medvids, Arturs (Riga Tech. U.) ; Onufrijevs, Pavels (Riga Tech. U.) ; Pira, Cristian (INFN, Legnaro) et al.
Superconducting (SC) thin film coatings on Cu substrates are already widely used as an alternative to bulk Nb SRF structures. Using Cu allows improved thermal stability compared to Nb due to having a greater thermal conductivity. [...]
2022 - 5 p.
- Published in : JACoW SRF 2021 (2022) 77-81
Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.77-81
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Main Highlights of ARIES WP15 Collaboration
/ Malyshev, Oleg (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Antoine, Claire (IRFU, Saclay) ; Azzolini, Oscar (INFN, Legnaro) ; Burt, Graeme (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U. (main)) ; Chyhyrynets, Eduard (INFN, Legnaro) ; Goudket, Philippe (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Keppel, Giorgio (INFN, Legnaro) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin) ; Leith, Stewart (U. Siegen (main)) ; Medvids, Arturs (Riga Tech. U.) et al.
An international collaboration of research teams from CEA (France), CERN (Switzerland), INFN/LNL (Italy), HZB and USI (Germany), IEE (Slovakia), RTU (Latvia) and STFC/DL (UK), are working together on better understanding of how to improve the properties of superconducting thin films (ScTF) for RF cavities. The collaboration has been formed as WP15 in the H2020 ARIES project funded by EC. [...]
2022 - 5 p.
- Published in : JACoW SRF 2021 (2022) 571-575
Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.571-575
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Synthesis of Nb and Alternative Superconducting Film to Nb for SRF Cavity as Single Layer
/ Valizadeh, Reza (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Antoine, Claire (IRFU, Saclay) ; Chyhyrynets, Eduard (INFN, Legnaro) ; Goudket, Philippe (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Hannah, Adrian (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin) ; Leith, Stewart (U. Siegen (main)) ; Malyshev, Oleg (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Medvids, Arturs (Riga Tech. U.) ; Onufrijevs, Pavels (Riga Tech. U.) et al.
The production of superconducting coatings for radio frequency (RF) cavities has been developed over several decades. It is widely accepted that for any further improvement in cavity RF performance, innovation is needed and one may have to turn to other forms of Nb and other superconducting materials. [...]
2022 - 6 p.
- Published in : JACoW SRF 2021 (2022) 893-898
Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.893-898
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RF Characterisation of New Coatings for Future Circular Collider Beam Screens
/ Krkotić, Patrick (CELLS - ALBA, LLS ; Barcelona, Polytechnic U.) ; Calatroni, Sergio (CERN) ; Granados, Xavier (Barcelona, Autonoma U.) ; Gutierrez, Joffre (Barcelona, Autonoma U.) ; Hannah, Adrian (Daresbury) ; Malyshev, Oleg B (Daresbury) ; O'Callaghan, J M (Barcelona, Polytechnic U.) ; Pérez, Francis (CELLS - ALBA, LLS) ; Pont, Montserrat (CELLS - ALBA, LLS) ; Puig, Teresa (Barcelona, Autonoma U.) et al.
For the future high energy colliders being under the design at this moment, the choice of a low surface impedance beam screen coating material has become of fundamental importance to ensure sufficiently low beam impedance and consequently guaranteed stable operation at high currents. We have studied the use of high-temperature superconducting coated conductors as possible coating materials for the beam screen of the FCC-hh. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2453-2456
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2453-2456
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Laser ablated surface engineering: from discovery to machine application
/ Valizadeh, R (Daresbury) ; Malyshev, O b (Daresbury) ; Sian, T (Daresbury ; U. Manchester (main)) ; Colligon, J S (Daresbury) ; Li, Q (U. Liverpool (main)) ; Perrie, W (U. Liverpool (main))
In the past few years we have established that Laser Ablation Surface Engineering (LASE) is a very effective way of producing surfaces which have Secondary Electron yields (SEY) < 1. These can be achieved with a variety of laser pulse durations from nano- to pico seconds. [...]
2020 - 8 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.209-216 (CERN-2020-007)
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Beam induced vacuum effects in the future circular hadron collider beam vacuum chamber
/ Bellafont, I (CELLS - ALBA, LLS ; CERN) ; Mether, L (Ecole Polytechnique, Lausanne ; CERN) ; Kersevan, R (CERN) ; Malyshev, O B (Daresbury) ; Baglin, V (CERN) ; Chiggiato, P (CERN) ; Pérez, F (CELLS - ALBA, LLS)
EuroCirCol is a conceptual design study of a post-LHC, Future Circular Hadron Collider (FCC-hh) with 50 TeV of beam energy and 100 km long, which aims to expand the current energy and luminosity frontiers. The vacuum chamber of the FCC-hh will have to cope with unprecedented levels of synchrotron radiation power for proton colliders, dealing simultaneously with a tighter magnet aperture. [...]
2020 - 15 p.
- Published in : Phys. Rev. Accel. Beams 23 (2020) 043201
Fulltext from Publisher: PDF;
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