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CERN Document Server 2,051 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 1.11 δευτερόλεπτα. 
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Chapter 7: RF Systems / Calaga, R (CERN) ; Baudrenghien, P (CERN) ; Burt, G (Lancaster U.) ; Capatina, O (CERN) ; Jensen, E (CERN) ; Montesinos, E (CERN) ; Ratti, A (SLAC)
The HL-LHC beams are injected, accelerated to and stored at their nominal energy of 7 TeV by the existing 400 MHz superconducting RF system of the LHC. A new superconducting RF system consisting of eight cavities per beam for transverse deflection (aka crab cavities) of the bunches will be used to compensate the geometric loss in luminosity due to the non-zero crossing angle and the extreme focusing of the bunches in the HL-LHC..
2024 - 26 p. - Published in : Adv. Ser. Direct. High Energy Phys. 31 (2024) 199-224 Fulltext: PDF;
In : The High Luminosity Large Hadron Collider, pp.199-224
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Chapter 4: RF systems / Calaga, R (CERN) ; Baudrenghien, P (CERN) ; Capatina, Ofelia (CERN) ; Jensen, Erk (CERN) ; Montesinos, Eric (CERN)
The HL-LHC beams are injected, accelerated, and stored to their nominal energy of 7 TeV by the existing 400 MHz superconducting RF system of the LHC. A novel superconducting RF system consisting of eight cavities per beam for transverse deflection (aka crab cavities) of the bunches will be used to compensate the geometric loss in luminosity due to the non-zero crossing angle and the extreme focusing of the bunches in the HL-LHC. Due to doubling of the beam currents in the HL-LHC era, an optimal detuning scheme (aka full- detuning) is required to cope with the transient beam loading effects. A modulation of the klystron and cavity phase make the phase of bunches with respect to the RF clock to progressively slip along the bunch train, but then recover during the abort gap. [...]
2020 - 22 p. - Published in : 10.23731/CYRM-2020-0010.65 Fulltext: PDF;
In : High-Luminosity Large Hadron Collider (HL-LHC): Technical design report, pp.65-86
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Functional Specifications of the LHC Prototype Crab Cavity System / Baudrenghien, P ; Brodzinski, K ; Calaga, R ; Capatina, O ; Jensen, E ; Macpherson, A ; Montesinos, E ; Parma, V
CERN-ACC-NOTE-2013-003.- Geneva : CERN, 2013 Fulltext: PDF;
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Chapter 4: RF Systems / Baudrenghien, P. (CERN) ; Burt, G. (Lancaster U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Calaga, R. (CERN) ; Capatina, O. (CERN) ; Hofle, W. (CERN) ; Jensen, E. (CERN) ; Macpherson, A. (CERN) ; Montesinos, E. (CERN) ; Ratti, A. (Fermilab) ; Shaposhnikova, E. (CERN)
Chapter 4 in High-Luminosity Large Hadron Collider (HL-LHC). The Large Hadron Collider (LHC) is one of the largest scientific instruments ever built. [...]
arXiv:1705.09445; FERMILAB-PUB-15-722-AD.- Geneva : CERN, 2015 - 27 p. - Published in : 10.5170/CERN-2015-005.81 Fulltext: 67cc4f8009fb610e320021d81701b7b0 - PDF; arXiv:1705.09445 - PDF; Published version from CERN: PDF; External link: Fermilab Library Server
In : High-Luminosity Large Hadron Collider (HL-LHC), pp.81-107
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RF System Conceptual Layout : Deliverable: D4.2 / Baudrenghien, Philippe (CERN) ; Calaga, Rama (CERN) ; Montesinos, Eric (CERN)
CERN-ACC-2014-0016.- Geneva : CERN, 2014 HiLumiLHC, 4.2 Fulltext: PDF;
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HL-LHC RF Roadmap / Calaga, R (CERN)
Geneva : CERN, 2015 Published version from CERN: PDF;
In : Chamonix 2014: LHC Performance Workshop, pp.209-216
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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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RF Performance Results of RF Double Quarter Wave Resonators for LHC High Luminosity Project / Turaj, Katarzyna (CERN) ; Bastard, Jeremy (CERN) ; Calaga, Rama (CERN) ; Calvo, Sebastien (CERN) ; Capatina, Ofelia (CERN) ; Castilla, Alejandro (CERN ; Jefferson Lab) ; Chiodini, Marco (CERN) ; Duval, Christophe (CERN) ; Edwards, Amelia (CERN ; Lancaster U.) ; Ferreira, Leonel (CERN) et al.
The LHC High Luminosity (HL-LHC) project includes, among other key items, the installation of superconducting crab cavities in the LHC machine. The Double Quarter Wave (DQW) crab cavity will be utilised to compensate for the effects of the vertical crossing angle [...]
2023 - 7 p. - Published in : JACoW SRF 2023 (2023) 925-928 Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.925-928
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RANKING CRITERIA, LHC CRAB CAVITIES / Calaga, R (CERN) ; Capatina, O (CERN) ; Jensen, E (CERN)
CERN-ACC-NOTE-2014-0053.- Geneva : CERN, 2014 Fulltext: PDF;
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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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