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2024-06-12
06:20
AUP First Pre-Series Cryo-Assembly Design Production and Test Overview / Feher, S (Fermilab) ; Ambrosio, G (Fermilab) ; Apollinari, G (Fermilab) ; Baldini, M (Fermilab) ; Bossert, R (Fermilab) ; Carcagno, R (Fermilab) ; Chlachidze, G (Fermilab) ; DiMarco, J (Fermilab) ; Rabehl, R (Fermilab) ; Stoynev, S (Fermilab) et al.
New high field and large-aperture quadrupole magnets for the low-beta inner triplets (Q1, Q2, Q3) have been built and tested as part of the high-luminosity upgrade of the Large Hadron Collider (HL-LHC). These new quadrupole magnets are based on Nb3Sn superconducting technology. [...]
FERMILAB-CONF-23-0891-TD.- 2024 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4005605 Fermilab Library Server: PDF; External link: Fermilab Library Server

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2024-06-12
06:20
Quantum Fuzzy Inference Engine for Particle Accelerator Control / Acampora, Giovanni (Naples U. ; INFN, Naples) ; Grossi, Michele (CERN) ; Schenk, Michael (CERN) ; Schiattarella, Roberto (Naples U. ; INFN, Naples)
Recently, quantum computing has been proven as an ideal theory for the design of fuzzy inference engines, thanks to its capability to efficiently solve the rule explosion problem. In this scenario, a quantum fuzzy inference engine (QFIE) was proposed as a quantum algorithm able to generate an exponential computational advantage over conventional fuzzy inference engines. [...]
2024 - 13 p. - Published in : IEEE Trans. Quantum Eng. 5 (2024) 1-13

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2024-06-11
11:55
Beam Simulations of a Gridded Lens for the Low-Energy Beam Transport of the Carbon RFQ / Koopmans, Marten Henrik (CERN) ; Lombardi, Alessandra (CERN) ; Pikin, Alexander (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))
The Low-Energy Beam Transport (LEBT) section is the part of the injector which transports the beam from the source to the Radio Frequency Quadrupole (RFQ). [...]
CERN-ACC-NOTE-2024-0013. - 2024.

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2024-06-11
06:40
Optics for Landau damping with minimized octupolar resonances in the LHC / Tomás, R (CERN) ; Carlier, F (CERN) ; Chudoba, F (CERN) ; Deniau, L (CERN) ; Dilly, J (CERN) ; Ferrentino, V (CERN ; Naples U.) ; Horney, S (CERN) ; Hostettler, M (CERN) ; Keintzel, J (CERN) ; Kostoglou, S (CERN) et al.
Operation of the Large Hadron Collider (LHC) requires strongoctupolar magnetic fields to suppress coherent beam instabilities.The amplitude detuning that is generated by these octupolar magneticfields brings the tune of individual particles close to harmfulresonances, which are mostly driven by the octupolar fieldsthemselves. In 2023, new optics were deployed in the LHC atinjection with optimized betatronic phase advances to minimize theresonances from the octupolar fields without affecting the amplitudedetuning. [...]
2024 - 14 p. - Published in : JINST 19 (2024) T05010 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.T05010

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2024-06-11
06:40
Metal additive manufacturing for particle accelerator applications / Romano, Tobia (Milan, Polytech. ; Riga Tech. U.) ; Pikurs, Guntis (CERN ; Riga Tech. U.) ; Ratkus, Andris (Riga Tech. U.) ; Torims, Toms (CERN ; Riga Tech. U.) ; Delerue, Nicolas (IJCLab, Orsay) ; Vretenar, Maurizio (CERN) ; Stepien, Lukas (Fraunhofer Inst., Dresden) ; López, Elena (Fraunhofer Inst., Dresden) ; Vedani, Maurizio (Milan, Polytech.)
Metal additive manufacturing technologies are rapidly becoming an integral part of the advanced technological portfolio for the most demanding industrial applications. These processes are capable of fabricating three-dimensional components with near-net shape quality by depositing the constituent materials in a layer-by-layer fashion. [...]
2024 - 38 p. - Published in : Phys. Rev. Accel. Beams 27 (2024) 054801 Fulltext: PDF;

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2024-06-11
06:40
Design of the RF waveguide network for the klystron-based CLIC main linac RF module / Wang, P (CERN) ; Capstick, M (CERN) ; Catalan Lasheras, N (CERN) ; Doebert, S (CERN) ; Grudiev, A (CERN) ; Rossi, C (CERN) ; Sanchez, P Morales (CERN) ; Syratchev, I (CERN) ; Wu, X (CERN)
The klystron-based Compact Linear Collider (CLIC) was initially proposed with a low center-of-mass energy of 380 GeV, primarily due to potential cost-effectiveness. To enhance overall cost-efficiency, reliability, and stability, a novel RF module for klystron-based CLIC main linac has been designed and studied. [...]
2024 - 11 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1064 (2024) 169410

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2024-06-11
06:40
Transverse emittance growth due to rf noise in crab cavities: Theory, measurements, cure, and high luminosity LHC estimates / Baudrenghien, P (CERN) ; Mastoridis, T (Cal. Poly.)
The High-Luminosity LHC (HL-LHC) upgrade with planned operation from 2029 onward has a goal of achieving a tenfold increase in the integrated number of recorded collisions thanks to a doubling of the intensity per bunch (2.2×1011 protons) and a reduction of β* (the β value in the two high luminosity detectors, namely ATLAS and CMS) to 15 cm. Such an increase in recorded collisions would significantly expedite new discoveries and exploration. [...]
2024 - 20 p. - Published in : Phys. Rev. Accel. Beams 27 (2024) 051001 Fulltext: PDF;

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2024-06-11
06:40
Conceptual design of a high reactive-power ferroelectric fast reactive tuner / Ben-Zvi, Ilan (SUNY, Stony Brook) ; Burt, Graeme (Lancaster U.) ; Castilla, Alejandro (Jefferson Lab) ; Macpherson, Alick (CERN) ; Shipman, Nicholas (CERN)
We present a novel design of a ferroelectric fast reactive tuner (FE-FRT) capable of modulating mega-VAR reactive power on a submicrosecond timescale. The high reactive power capability of our design extends the range of applications of reactive tuners to numerous applications. [...]
2024 - 14 p. - Published in : Phys. Rev. Accel. Beams 27 (2024) 052001 Fulltext: PDF;

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2024-06-11
04:35
Elevating electron energy gain and betatron X-ray emission in proton-driven wakefield acceleration / Saberi, Hossein (Manchester U. ; Daresbury) ; Xia, Guoxing (Manchester U. ; Daresbury) ; Liang, Linbo (Manchester U. ; Daresbury) ; Farmer, John Patrick (CERN ; Munich, Max Planck Inst.) ; Pukhov, Alexander (Heinrich Heine U., Dusseldorf)
The long proton beams present at CERN have the potential to evolve into a train of microbunches through the self-modulation instability process. [...]
arXiv:2404.19711. - 7 p.
Fulltext

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2024-06-07
06:37
LHC Upgrades in preparation of Run 3 / Arduini, G (CERN) ; Baglin, V (CERN) ; Bartosik, H (CERN) ; Bottura, L (CERN) ; Bracco, C (CERN) ; Bradu, B (CERN) ; Bregliozzi, G (CERN) ; Brodzinski, K (CERN) ; Bruce, R (CERN) ; Calviani, M (CERN) et al.
The Large Hadron Collider (LHC) Long Shutdown 2(2019–2021), following LHC Run 2, was primarily dedicated to theupgrade of the LHC Injectors but it included also a significantamount of activities aimed at consolidation of the LHC machinecomponents, removal of known limitations and initial upgrades inview of the High-Luminosity LHC (HL-LHC) to favour the intensityramp-up during Run 3 (2022–2025). An overview of the majormodifications to the accelerator and its systems is followed by asummary of the results of the superconducting magnet trainingcampaign to increase the LHC operation energy beyond the maximumvalue of 6.5 TeV reached during Run 2. [...]
2024 - 138 p. - Published in : JINST 19 (2024) P05061 Fulltext: PDF;

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