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2025-07-31
06:15
ESS WS scintillator system design and test results / Grishin, Viatcheslav (ESS, Lund) ; Aleksandrov, Alexander (ORNL, Oak Ridge (main)) ; Boehme, Christian (Julich, Forschungszentrum) ; Derrez, Clement (ESS, Lund) ; Thomas, Cyrille (ESS, Lund) ; Bergman, Edvard (ESS, Lund) ; Donegani, Elena (ESS, Lund) ; Kocevar, Hinko (ESS, Lund) ; Emery, Jonathan (CERN) ; Sirvent, Jose (CERN) et al.
The WS superconducting systems are based on scintillator detectors and wavelength shifting fibers are mounted on the beam pipe. The detectors are coupled to long haul optical fibers, which carry the signals to custom front end electronics sitting in controls racks at the surface. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPG33 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG33

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2025-07-31
06:15
Energy dependence of PS main unit harmonics / Ferrentino, Vittorio (U. Naples (main)) ; Huschauer, Alexander (CERN) ; Gilardi, Antonio (U. Naples (main)) ; Cotte, Denis (CERN) ; Maclean, Ewen (CERN) ; von Freeden, Luke (CERN) ; Karppinen, Mikko (CERN) ; Arpaia, Pasquale (CERN) ; Tomas, Rogelio (CERN) ; Persson, Tobias (CERN)
CERN Proton Synchrotron (PS) is featured with 100 C-shaped combined-function Main Units (MUs) magnets with a complicated pole shape. The operation and the modelling of the PS-MUs has been historically carried out with empirical beam-based studies. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) TUPC15 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC15

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2025-07-31
06:15
Innovative bulge test setup to characterize thin beam vacuum windows / Giovinco, Valentina (CERN) ; Morrone, Marco (CERN) ; Ferreira Somoza, Jose (CERN) ; Garion, Cedric (CERN)
As part of the International Muon Collider study, a beam vacuum window is being developed at CERN. It is required for the final cooling, where the charged particles travel from the vacuum chamber to the absorber; here, the beam loses momentum to cross a second window entering in a RF cavity that increases the longitudinal momentum. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPR33 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR33

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2025-07-24
15:29
Development of a new levelling process integrated into a 3D global calculation / Fuchs, Jean-Frederic (CERN) ; Segers, Jean-Francois ; Vendeuvre, Camille (CERN)
CERN surveyors have traditionally used the 2D + 1 method for beamline smoothing, where computing the planimetric (XY) and altimetric (H) data performed independently and separately. [...]
CERN-ACC-NOTE-2024-0036. - 2024 - 7.
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2025-07-24
14:43
Layer beams and their prospect for long-range alignment / Dusek, Martin (Technical University of Liberec (CZ)) ; Figura, Sebastian Antoni (Akademia Gorniczo Hutnicza (PL)) ; Gayde, Jean-Christophe (CERN) ; Sulc, Miroslav (Technical University of Liberec (CZ))
As part of the study on using structured laser light for alignment, an innovative technique is proposed for generating symmetrical pseudo-non-diffracting layers of caustic optical beams, known as Layer Beams (LB). [...]
CERN-ACC-NOTE-2024-0032. - 2024 - 5.
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2025-07-18
06:05
Quantifying the Heat Load to Conductors Due to Strain Energy Release in CTD-101 K Magnet Impregnant / van Steenlandt, Jan (Twente U., Enschede) ; Kario, Anna (Twente U., Enschede) ; Otten, Simon (Twente U., Enschede) ; Warnet, Laurent (Twente U., Enschede) ; Wessel, Sander (Twente U., Enschede) ; ten Kate, Herman (Twente U., Enschede) ; van Oort, Hans (Twente U., Enschede)
State-of-the-art Nb3Sn superconducting accelerator magnets are still prone to lengthy training. This study investigates whether direct heat from fractures in commonly used magnet impregnant is sufficient to cause the instabilities during training. [...]
2025 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 1-7 document.pdf: PDF; External link: Fulltext

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2025-07-15
06:44
Design of a multipurpose test facility (MTF) for HTS cables / Ballarino, Amalia (CERN) ; Barth, Christian (CERN) ; Masci, Marco (CERN) ; Perini, Diego (CERN)
The High Field Magnet (HFM) program foresees, among others, the systematic measurement and assessment of mechanical, thermal, and electrical properties of high temperature superconductors (HTS) cables. These measurements are a key factor to characterize the conductor, verify its performance and control the production quality. [...]
2025 - 6 p. - Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012213
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012213

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2025-07-09
11:42
Experimental validation of a versatile test bench for thermal contraction measurements down to 1.8 K / Höll, Stefan (CERN) ; Guinchard, Michael (CERN) ; De Frutos, Óscar Sacristán (CERN)
The use of cryogenics plays a major role in the operation of modern high-energy accelerators and ensures, for instance, the superconducting state of beam-guiding and focusing magnets. A profound understanding of the thermo-mechanical behavior of the structures and components is therefore crucial, particularly for the strain-sensitive Nb$_{3}$Sn-based superconducting coils. [...]
2025 - 6 p. - Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012220
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In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012220

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2025-07-08
10:02
High Luminosity LHC Optics Feasibility Studies for: ATLAS, ALICE, and LHCb / Patel, Pragati (Cracow, INP) ; Trzebiński, Maciej (Cracow, INP)
Properties of proton trajectories along the High Luminosity LHC beam-line in the vicinity of ATLAS, ALICE, and LHCb interaction points are discussed. Based on this, possible locations of forward proton detectors in the vicinity of these experiments were identified. [...]
2024 - 6 p. - Published in : Acta Phys. Pol. B Proc. Suppl. 17 (2024) 5-A30 External link: Fulltext
In : 30th Cracow Epiphany Conference on Precision Physics at High Energy Colliders: dedicated to the memory of Staszek Jadach (Epiphany 2024), Cracow, Poland, 8 - 12 Jan 2024, pp.5-A30

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2025-06-14
06:01
Space Charge in Circular Machines / Ferrario, Massimo (U. Rome La Sapienza (main) ; Frascati) ; Migliorati, Mauro (Frascati ; U. Rome La Sapienza (main)) ; Palumbo, Luigi (U. Rome La Sapienza (main) ; Frascati)
Space charge forces, which arise directly from the beam's charge distribution and include the influence of image charges and currents induced by interactions with a perfectly conducting, smooth pipe, are very important in high-intensity, low-energy accelerators. [...]
arXiv:2505.14091. - 2025 - 22.
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