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Beam induced heat load instrumentation installed in LHC during the Long Shutdown 2
/ Bradu, B (CERN) ; Brodzinski, K (CERN) ; Casas-Cubillos, J (CERN) ; Delikaris, D (CERN) ; Deschamps, J B (CERN) ; Le Naour, S (CERN) ; Pezzetti, M (CERN) ; Tavian, L (CERN) ; Tovar, A (CERN) ; Sisti, M (CERN) et al.
During the second run of the Large Hadron Collider (LHC) between 2015 and 2018, significant beam induced heat loads have been observed on the beam screens circuits impacting the cryogenic system capacity, mainly due to the electron clouds generated by the beams. To validate these measurements and to obtain precise heat load assessments and comparison with preliminary calculations based on existing hardware equipment at selected locations, it was decided to add new cryogenic instrumentation around the machine. [...]
2022 - 8 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 1240 (2022) 012043
Fulltext: PDF;
In : Cryogenic Engineering Conference and International Cryogenic Materials Conference, Online, 19 - 23 Jul 2021, pp.012043
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Mechanical Consolidation of the LHC Inner Triplet Magnet Supporting System for Remote Alignment
/ Micolon, Frederic (CERN) ; Bourcey, Nicolas (CERN) ; Deschamps, Jean-Baptiste (CERN) ; Herty, Andreas (CERN) ; Le Naour, Sandrine (CERN) ; Mikkola, Tommi (CERN) ; Parma, Vittorio (CERN) ; Ramos, Delio (CERN) ; Rude, Vivien (CERN) ; Sosin, Mateusz (CERN)
Given the high radiation area and the tight alignment tolerances, the LHC inner triplet magnets were designed to be realigned remotely using motorized supporting jacks. However, during run 2 the LHC triplet realignment system started to show an unexpected behavior with erratic load variations on the magnet supporting jacks when operated [...]
Geneva : JACoW, 2021 - 3 p.
- Published in : JACoW IPAC 2021 (2021) 2207-2209
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2207-2209
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Thermal performance of the new superfluid helium vertical test cryostats for magnet tests at CERN
/ Vande Craen, Arnaud (CERN) ; Bajko, M (CERN) ; Benda, V (CERN) ; Deschamps, J-B (CERN) ; Giloux, C (CERN) ; Lees, A (CERN) ; Parma, V (CERN) ; Pasdeloup, F (CERN) ; Pirotte, O (CERN)
In the frame of the R&D; program of the HL-LHC, the upgrade of the Large Hadron Collider (LHC), CERN augmented its test facility with two new large-scale vertical test stations for superconducting magnet testing. The cryostats composing the core of these test stations share design features but are of different dimensions: one allows testing magnets up to 1.5 m diameter, 2.5 m long for a maximum weight of 15 t, while the other can accommodate magnets up to 0.9 m diameter, and 5.5 m long for a maximum weight of 18 t. [...]
IOP, 2019 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012081
Fulltext: PDF;
In : 27th International Cryogenic Engineering Conference - International Cryogenic Materials Conference 2018, Oxford, United Kingdom, 3 - 7 Sep 2018, pp.012081
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The Belle II Physics Book
/ Belle-II Collaboration
We present the physics program of the Belle II experiment, located on the intensity frontier SuperKEKB e+e- collider. Belle II collected its first collisions in 2018, and is expected to operate for the next decade. [...]
arXiv:1808.10567; KEK Preprint 2018-27; BELLE2-PUB-PH-2018-001; FERMILAB-PUB-18-398-T; JLAB-THY-18-2780; INT-PUB-18-047; UWThPh 2018-26.-
2019-12-23 - 654 p.
- Published in : PTEP: 2019 (2019) , no. 12, pp. 123C01
- Published in : PTEP: 2020 (2020) , no. 2, pp. 029201
Article from SCOAP3: PDF; Fulltext: 1808.10567 - PDF; fermilab-pub-18-398-t - PDF; Erratum - PDF; Fulltext from publisher: PDF; External link: Fermilab Library Server (fulltext available)
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Assembling experience of the first two HIE-ISOLDE cryomodules
/ Therasse, Mathieu (CERN) ; Barlow, Graeme (CERN) ; Bizzaglia, Sauro (CERN) ; Capatina, Ofelia (CERN) ; Chrul, Anna (CERN) ; Demarest, Paul (CERN) ; Dequaire, Julien (Intitek, Lyon, France) ; Deschamps, Jean-Baptiste (CERN) ; Gayde, Jean-Christophe (CERN) ; Gourragne, Max (CERN) et al.
The assembly of the first two cryomodules (CM1 and CM2) of the new superconducting linear accelerator HIE-ISOLDE (High Intensity and Energy ISOLDE), located downstream of the REX-ISOLDE normal conducting accelerator, started one year and half ago. After a delicate assembly phase in the cleanroom which lasted nine months, the first cryomodule was transported to the ISOLDE hall on 2 May 2015 and coupled to the existing REX-ISOLDE accelerator, increasing the energy of the radioactive ion beams from 2.8 to 4.3 MeV per nucleon. [...]
CERN-ACC-2017-347.-
2017 - 3 p.
- Published in : 10.18429/JACoW-LINAC2016-THPRC016
Fulltext: PDF;
In : 28th Linear Accelerator Conference, East Lansing, Michigan, 25 - 30 Sep 2016, pp.THPRC016
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First HIE-ISOLDE cryo-module assembly at CERN
/ Therasse, Mathieu (CERN) ; Barlow, Graeme (CERN) ; Bizzaglia, Sauro (CERN) ; Bousquet, Jean-Alexandre (CERN) ; Chrul, Anna (CERN) ; Demarest, Paul (CERN) ; Dequaire, Julien (Unlisted, FR) ; Deschamps, Jean-Baptiste (CERN) ; Ferreira Somoza, Jose (CERN) ; Gayde, Jean-Christophe (CERN) et al.
The first phase of the HIE-ISOLDE project aims to increase the energy of the existing REX ISOLDE facilities from 3MeV/m to 5MeV/m. It involves the assembly of two superconducting cryo-modules based on quarter wave resonators made by niobium sputtered on copper. [...]
2015 - 5 p.
- Published in : 10.18429/JACoW-SRF2015-TUPB106
Fulltext: PDF;
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.TUPB106
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The Assembly Experience of the First Cryo-module for HIE-ISOLDE at CERN
/ Leclercq, Yann (CERN) ; Barlow, Graeme (CERN) ; Bousquet, Jean-Alexandre (CERN) ; Chrul, Anna (CERN) ; Demarest, Paul (CERN) ; Dequaire, Julien (Intitek, Lyon) ; Deschamps, Jean-Baptiste (CERN) ; Ferreira Somoza, Jose (CERN) ; Gayde, Jean-Christophe (CERN) ; Gourragne, Max (CERN) et al.
The HIE ISOLDE project aims at increasing the energy of the radioactive ion beams of the existing REX ISOLDE facility from the present 3 MeV/u up to 10 MeV/u for A/q to 4.5. The upgrade includes the installation of a superconducting linac in successive phases, for a final layout containing two low-β and four high-β cryo-modules. [...]
CERN-ACC-2015-236.-
2015 - 3 p.
- Published in : (2015) , pp. WEPHA013
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.WEPHA013
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