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1.
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Design development and technological R&D; for niobium-cladded beam production targets
/ Griesemer, T (CERN) ; Gallifa Terricabras, A (CERN) ; Perez Fontenla, A T (CERN) ; Mazzola, G (CERN) ; Arnau-Izquierdo, G (CERN) ; Aviles Santillana, I (CERN) ; Esposito, Luigi Salvatore (CERN) ; Calviani, M (CERN) ; Cusworth, M (Sheffield U.) ; Mena Andrade, R (CERN) et al.
High power particle producing target components in research facilities often consist of refractory metals. They experience challenging thermo-mechanical conditions and therefore require dedicated cooling systems. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPM017
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM017
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2.
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Microchannel Cooling for the LHCb VELO Upgrade I
/ Collins, Paula (CERN) ; De Aguiar Francisco, Oscar Augusto (University of Manchester (GB)) ; Byczynski, Wiktor (Tadeusz Kosciuszko Cracow University of technology (PL)) ; Akiba, Kazu (Nikhef National institute for subatomic physics (NL)) ; Bertella, Claudia (University of Manchester (GB)) ; Bitadze, Alexander (University of Manchester (GB)) ; Buytaert, Jan (CERN) ; De Capua, Stefano (University of Manchester (GB)) ; Callegari, Riccardo (CERN) ; Catinaccio, Andrea (CERN) et al.
The LHCb VELO Upgrade I, currently being installed for the 2022 start of LHC Run 3, uses silicon microchannel coolers with internally circulating bi-phase \cotwo for thermal control of hybrid pixel modules operating in vacuum. This is the largest scale application of this technology to date. [...]
arXiv:2112.12763; CERN-LHCb-PUB-2021-010; LHCb-PUB-2021-010; CERN-LHCb-PUB-2021-010.-
Geneva : CERN, 2022-09-11 - 18 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1039 (2022) 166874
Fulltext: 2112.12763 - PDF; Publication - PDF; Publication: PDF;
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3.
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Thermostructural characterization and structural elastic property optimization of novel high luminosity LHC collimation materials at CERN
/ Borg, M (Malta U.) ; Bertarelli, A (CERN) ; Carra, F (CERN) ; Gradassi, P (CERN) ; Guardia-Valenzuela, J (CERN) ; Guinchard, M (CERN) ; Arnau Izquierdo, G (CERN) ; Mollicone, P (Malta U.) ; Sacristan-de-Frutos, O (CERN) ; Sammut, N (Malta U.)
The CERN Large Hadron Collider is currently being upgraded to operate at a stored beam energy of 680 MJ through the High Luminosity upgrade. The LHC performance is dependent on the functionality of beam collimation systems, essential for safe beam cleaning and machine protection. [...]
2018 - 15 p.
- Published in : Phys. Rev. Accel. Beams 21 (2018) 031001
Fulltext: PDF;
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4.
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The Copper Substrate Developments for the HIE-ISOLDE High-Beta Quarter Wave Resonator
/ Alberty, L (CERN) ; Arnau, G (CERN) ; Aviles, I (CERN) ; Calatroni, S (CERN) ; Capatina, O (CERN) ; Foffano, G (CERN) ; Kadi, Y (CERN) ; Moyret, P (CERN) ; Schirm, K-M (CERN) ; Tardy, T (CERN) et al.
A new Linac using superconducting Quarter-Wave Resonators (QWRs) is under construction at CERN in the framework of the HIE-ISOLDE project. The QWRs are made by niobium sputtered on a bulk copper substrate. [...]
2013 - 3 p.
Published version from JACoW: PDF;
In : 16th International Conference on RF Superconductivity, Paris, France, 23 - 27 Sep 2013, pp.tup069
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5.
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CERN Developments for 704 MHz Superconducting Cavities
/ Capatina, O (CERN) ; Atieh, S (CERN) ; Aviles Santillana, I (CERN) ; Arnau Izquierdo, G (CERN) ; Bonomi, R (CERN) ; Calatroni, S (CERN) ; Chambrillon, J (CERN) ; Gerigk, F (CERN) ; Garoby, R (CERN) ; Guinchard, M (CERN) et al.
The Superconducting Proton Linac (SPL) is an R&D; effort coordinated by CERN in partnership with other international laboratories. It is aiming at developing key technologies for the construction of a multi-megawatt proton linac based on state-of-the-art RF superconducting technology, which would serve as a driver in new physics facilities for neutrinos and/or Radioactive Ion Beam (RIB). [...]
2013 - 14 p.
Published version from JACoW: PDF;
In : 16th International Conference on RF Superconductivity, Paris, France, 23 - 27 Sep 2013, pp.friob04
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6.
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7.
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Elastic anisotropy in multifilament Nb$_3$Sn superconducting wires
/ Scheuerlein, C (CERN) ; Fedelich, B (CERN) ; Alknes, P (CERN) ; Arnau, G (CERN) ; Bjoerstad, R (CERN) ; Bordini, B (CERN)
The elastic anisotropy caused by the texture in the Nb$_{3}$Sn filaments of PIT and RRP wires has been calculated by averaging the estimates of Voigt and Reuss, using published Nb$_{3}$Sn single crystal elastic constants and the Nb$_{3}$Sn grain orientation distribution determined in both wire types by Electron Backscatter Diffraction. At ambient temperature the calculated Nb$_{3}$Sn E-moduli in axial direction in the PIT and the RRP wire are 130 GPa and 140 GPa, respectively. [...]
CERN-ACC-2015-0022.-
Geneva : CERN, 2015 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 25 (2015) 8400605
Fulltext: PDF;
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.8400605
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8.
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9.
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A visualization of the damage in Lead Tungstate calorimeter crystals after exposure to high-energy hadrons
/ Dissertori, G. (Zurich, ETH) ; Luckey, D. (Zurich, ETH) ; Nessi-Tedaldi, F. (Zurich, ETH) ; Pauss, F. (Zurich, ETH) ; Wallny, R. (Zurich, ETH) ; Spikings, R. (U. Geneva (main)) ; Van der Lelij, R. (U. Geneva (main)) ; Arnau Izquierdo, G. (CERN)
The anticipated performance of calorimeter crystals in the environment expected after the planned High-Luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN has to be well understood, before informed decisions can be made on the need for detector upgrades. Throughout the years of running at the HL-LHC, the detectors will be exposed to considerable fluences of fast hadrons that have been shown to cause cumulative transparency losses in Lead Tungstate scintillating crystals. [...]
AIDA-PUB-2012-009.-
Geneva : CERN, 2012
- Published in : Nucl. Instrum. Methods Phys. Res., A 684 (2012) 57-62
Fulltext: PDF;
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10.
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Texture in state-of-the-art Nb$_{3}$Sn multifilamentary superconducting wires
/ Scheuerlein, C (CERN) ; Arnau, G (CERN) ; Alknes, P (CERN) ; Jimenez, N (CERN) ; Bordini, B (CERN) ; Ballarino, A (CERN) ; Di Michiel, M (ESRF, Grenoble) ; Thilly, L (Futuroscope Chasseneuil, Poitiers U. Pprime Inst.) ; Besara, T (Florida State U., Tallahassee (main) ; Natl. High Mag. Field Lab.) ; Siegrist, T (Florida State U., Tallahassee (main) ; Natl. High Mag. Field Lab.)
The texture of Nb$_{3}$Sn in recent multifilamentary composite wires has been studied by neutron diffraction, synchrotron x-ray diffraction and electron backscatter diffraction. In powder-in-tube (PIT) type superconductors the Nb precursor filaments exhibit a strong 〈110〉 fiber texture as a consequence of the severe cold drawing process, and a 〈110〉 texture is also observed in the Nb$_{3}$Sn. [...]
2014
- Published in : Supercond. Sci. Technol. 27 (2014) 025013
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