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Simulations and First RF Measurements of Coaxial HOM Coupler Prototypes for PERLE SRF Cavities
/ Barbagallo, Carmelo (IJCLab, Orsay ; U. Paris-Saclay) ; Barriere, Simon (CERN) ; Clement, Sebastien (CERN) ; Duchesne, Patricia (IJCLab, Orsay) ; Gerard, Romain Louis (CERN) ; Gerigk, Frank (CERN) ; Henry, James (Jefferson Lab) ; Kaabi, Walid (IJCLab, Orsay) ; Maurin, Pierre (CERN) ; Olivier, Gilles (IJCLab, Orsay) et al.
Superconducting Radio-Frequency (SRF) linac cryomodules are foreseen for the high-current multi-turn energy recovery linac PERLE (Powerful Energy Recovery Linac for Experiments). Coaxial higher order mode (HOM) couplers are the primary design choice to absorb beam-induced power and avoid beam instabilities. [...]
2023 - 4 p.
- Published in : JACoW SRF 2023 (2023) WEPWB103
Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.WEPWB103
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2.
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Optimizing the Manufacture of High-Purity Niobium SRF Cavities Using the Forming Limit Diagram: A Case Study of the HL-LHC Crab Cavities RFD Pole
/ Gallifa Terricabras, Adrià (CERN) ; Aviles Santillana, Ignacio (CERN) ; Barrière, Simon (CERN) ; Cano-Pleite, Eduardo (Carlos III U., Madrid) ; Garlasché, Marco (CERN) ; Narduzzi, Manuele (Fermilab) ; Pfeiffer, Stephan (CERN) ; Prever-Loiri, Laurent (CERN) ; Swieszek, Joanna (CERN ; U. Heidelberg (main))
The Crab Cavities are key components of the High Luminosity Large Hadron Collider (HL-LHC) project at CERN, which aims to increase the integrated luminosity of the LHC, the world’s largest particle accelerator, by a factor of ten. This paper explores the application of the Forming Limit Diagram (FLD) to enhance the manufacturing process of complex-shape Nb-based cavities, with a focus on the formability challenges experienced with the pole of the Radio Frequency Dipole (RFD) Crab Cavities. [...]
FERMILAB-CONF-23-769.-
2023 - 7 p.
- Published in : JACoW SRF 2023 (2023) 627-633
Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.627-633
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First coaxial HOM coupler prototypes and RF measurements on a copper cavity for the PERLE project
/ Barbagallo, Carmelo (U. Paris-Saclay ; IJCLab, Orsay) ; Duchesne, Patricia (IJCLab, Orsay) ; Kaabi, Walid (IJCLab, Orsay) ; Olivier, Gilles (IJCLab, Orsay) ; Olry, Guillaume (IJCLab, Orsay) ; Roset, Samuel (IJCLab, Orsay) ; Zomer, Fabian (IJCLab, Orsay ; U. Paris-Saclay) ; Henry, James (Jefferson Lab) ; Overstreet, Sarah (Jefferson Lab) ; Park, Gunn-Tae (Jefferson Lab) et al.
The PERLE (Powerful Energy Recovery Linac for Experiments) project relies on superconducting RF (SRF) cavities to reach its goals. The installation of coaxial couplers on the cutoff tubes of SRF cavities is foreseen for damping cavity’s Higher Order Modes (HOMs). [...]
2023
- Published in : JACoW IPAC 2023 (2023) MOPA025
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA025
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4.
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HOM Couplers and RF Antennas for HL-LHC Crab Cavities: Developments for Manufacturing
/ Barrière, Simon (CERN) ; Atieh, Said (CERN) ; Bulat, Bartosz (CERN) ; Calaga, Rama (CERN) ; Calvo, Sebastien (CERN) ; Capatina, Ofelia (CERN) ; Demazière, Thomas (CERN) ; Favre, Gilles (CERN) ; Gallifa Terricabras, Adrià (CERN) ; Garlasché, Marco (CERN) et al.
Superconducting RF crab cavities are being manufactured as part of the High-Luminosity LHC project at CERN. Amongst its related ancillaries, radiofrequency HOM (High Order Modes) couplers and field antennas are essential for reaching nominal performance during operation with high energy beams, as they monitor and control the electromagnetic fields in the cavities. [...]
2022 - 5 p.
- Published in : JACoW SRF 2021 (2022) 303-307
Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.303-307
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5.
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6.
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Design and Fabrication of FRESCA2 Cryostat
/ Dallocchio, Alessandro (CERN) ; Carra, Federico (CERN) ; Tabian, Iuliana (CERN) ; Masci, Marco (CERN) ; Riffaud, Benoit (CERN) ; Zuccalli, Laurent ; Maire, Vincent ; Lombardo, Davide Maria (Universita e INFN, Firenze (IT)) ; Debeux, Julien ; Rigutto, Emilien (CERN) et al.
In the framework of the High Field Magnet activities, a new FRESCA2 test station (Facility for Reception of Superconducting Cables 2) was designed and fabricated at CERN to measure superconducting cables in background magnetic fields. [...]
CERN-ACC-NOTE-2022-0050.
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2022. - 5 p.
Full text
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7.
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Quench localisation in SRF cavity tests with transition edge sensors
/ Furci, H (CERN) ; Vandoni, G (CERN) ; Macpherson, A (CERN) ; Barriere, S (CERN) ; Castilla, A (CERN) ; Shipman, N (CERN) ; Turaj, K (CERN) ; Wartak, M (CERN) ; Zwozniak, A (CERN)
Transition edge sensors (TES) have recently been developed at CERN as second sound detectors for quench localisation on superconducting radio frequency (SRF) cavities. After validation of the concept of heat source localisation by TES in the laboratory, TES have been implemented as a diagnostic tool in SRF vertical testing cryostats at CERN SM18 facility. [...]
2019 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012155
Fulltext: PDF;
In : 27th International Cryogenic Engineering Conference - International Cryogenic Materials Conference 2018, Oxford, United Kingdom, 3 - 7 Sep 2018, pp.012155
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First demonstration of the use of crab cavities on hadron beams
/ Calaga, R (CERN) ; Alekou, A (Manchester U.) ; Antoniou, F (CERN) ; Appleby, R B (Manchester U.) ; Arnaudon, L (CERN) ; Artoos, K (CERN) ; Arduini, G (CERN) ; Baglin, V (CERN) ; Barriere, S (CERN) ; Bartosik, H (CERN) et al.
Many future particle colliders require beam crabbing to recover geometric luminosity loss from the nonzero crossing angle at the interaction point (IP). A first demonstration experiment of crabbing with hadron beams was successfully carried out with high energy protons. [...]
2021 - 6 p.
- Published in : Phys. Rev. Accel. Beams 24 (2021) 062001
Fulltext: PDF;
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Assessment of the Mechanical Properties of Ultra-High Purity Niobium after Cold Work and Heat Treatment with the HL-LHC Crab Cavities as Benchmark
/ Gallifa Terricabras, Adria (CERN) ; Amorim Carvalho, Alexandre (CERN) ; Aviles Santillana, Ignacio (CERN) ; Barriere, Simon (CERN) ; Calaga, Rama (CERN) ; Cano Pleite, Eduardo (CERN) ; Capatina, Ofelia (CERN) ; Crouvizier, Mickael Denis (CERN) ; Dassa, Luca (CERN) ; Meyer, Mickael Sebastien (CERN) et al.
The High Luminosity Large Hadron Collider (HL-LHC) is the upgrade of the world’s largest particle collider; it will allow the full exploitation of the LHC potential and its operation beyond 2025. An essential part of the HL-LHC project are the Crab Cavities, that are particle de-flecting SRF cavities of non-axisymmetric shape made of bulk ultra-high purity Nb. [...]
CERN-ACC-2019-0050.-
Geneva : CERN, 2019 - 7 p.
- Published in : (2019) , pp. 862-867
Fulltext: 1018429JACoWSRF2019THP012 - PDF; CERN-ACC-2019-0050 - PDF;
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