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1.
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Collective Effects IV
/ Li, Kevin Shing Bruce (speaker) (CERN)
Collective effects in particle accelerators are one of the key constituents for determining the ultimate particle accelerator performance.Their role is becoming increasingly important as particle accelerators are being pushed ever closer towards the intensity and beam brightness frontiers. They are slightly peculiar in their nature as their impact and significance depend not only on external fields but also on the beam properties themselves.This results in a highly coupled and convoluted system. [...]
2023 - 2695.
CAS - CERN Accelerator School; CAS course on "Introduction to Accelerator Physics", 25 September - 08 October 2023, Santa Susanna, Spain
External links: Talk details; Event details
In : CAS course on "Introduction to Accelerator Physics", 25 September - 08 October 2023, Santa Susanna, Spain
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2.
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Collective Effects III
/ Li, Kevin Shing Bruce (speaker) (CERN)
Collective effects in particle accelerators are one of the key constituents for determining the ultimate particle accelerator performance.Their role is becoming increasingly important as particle accelerators are being pushed ever closer towards the intensity and beam brightness frontiers. They are slightly peculiar in their nature as their impact and significance depend not only on external fields but also on the beam properties themselves.This results in a highly coupled and convoluted system. [...]
2023 - 2550.
CAS - CERN Accelerator School; CAS course on "Introduction to Accelerator Physics", 25 September - 08 October 2023, Santa Susanna, Spain
External links: Talk details; Event details
In : CAS course on "Introduction to Accelerator Physics", 25 September - 08 October 2023, Santa Susanna, Spain
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3.
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Collective Effects II
/ Li, Kevin Shing Bruce (speaker) (CERN)
Collective effects in particle accelerators are one of the key constituents for determining the ultimate particle accelerator performance.Their role is becoming increasingly important as particle accelerators are being pushed ever closer towards the intensity and beam brightness frontiers. They are slightly peculiar in their nature as their impact and significance depend not only on external fields but also on the beam properties themselves.This results in a highly coupled and convoluted system. [...]
2023 - 2991.
CAS - CERN Accelerator School; CAS course on "Introduction to Accelerator Physics", 25 September - 08 October 2023, Santa Susanna, Spain
External links: Talk details; Event details
In : CAS course on "Introduction to Accelerator Physics", 25 September - 08 October 2023, Santa Susanna, Spain
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4.
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Collective Effects I
/ Li, Kevin Shing Bruce (speaker) (CERN)
Collective effects in particle accelerators are one of the key constituents for determining the ultimate particle accelerator performance.Their role is becoming increasingly important as particle accelerators are being pushed ever closer towards the intensity and beam brightness frontiers. They are slightly peculiar in their nature as their impact and significance depend not only on external fields but also on the beam properties themselves.This results in a highly coupled and convoluted system. [...]
2023 - 3018.
CAS - CERN Accelerator School; CAS course on "Introduction to Accelerator Physics", 25 September - 08 October 2023, Santa Susanna, Spain
External links: Talk details; Event details
In : CAS course on "Introduction to Accelerator Physics", 25 September - 08 October 2023, Santa Susanna, Spain
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5.
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Performance Improvement Studies of the Fixed Target Beams along the CERN Injector Chain
/ Prebibaj, Tirsi (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Damerau, Heiko (CERN) ; Fraser, Matthew Alexander (CERN) ; Di Giovanni, Gian Piero (CERN) ; Huschauer, Alexander (CERN) ; Li, Kevin Shing Bruce (CERN) ; Schenk, Michael (CERN) ; Velotti, Francesco Maria (CERN)
Within the LHC Injectors Upgrade (LIU) project, LHC injectors received major upgrades that resulted in an unprecedented beam brightness. In the framework of the Physics Beyond Colliders (PBC) study, the full potential of the upgraded injectors is being explored for the improvement of the Fixed Target (FT) beams as well. [...]
CERN-PBC-CONF-2024-009.-
Geneva : CERN, 2024 - 4.
- Published in : JACoW IPAC2024 (2024) THPC14
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPC14
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6.
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Hybrid actor-critic algorithm for quantum reinforcement learning at CERN beam lines
/ Schenk, Michael (CERN) ; Combarro, Elías F. (U. Oviedo (main)) ; Grossi, Michele (CERN) ; Kain, Verena (CERN) ; Li, Kevin Shing Bruce (CERN) ; Popa, Mircea-Marian (Bucharest, Polytechnic Inst.) ; Vallecorsa, Sofia (CERN)
Free energy-based reinforcement learning (FERL) with clamped quantum Boltzmann machines (QBM) was shown to significantly improve the learning efficiency compared to classical Q-learning with the restriction, however, to discrete state-action space environments. In this paper, the FERL approach is extended to multi-dimensional continuous state-action space environments to open the doors for a broader range of real-world applications. [...]
arXiv:2209.11044.-
2024-02-21 - 17 p.
- Published in : Quantum Sci. Technol. 9 (2024) 025012
Fulltext: Publication - PDF; 2209.11044 - PDF;
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7.
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LHC Oxygen Run Preparation in the CERN Injector Complex
/ Slupecki, Maciej (CERN) ; Aguglia, Davide (CERN) ; Aguiar, Ygor (Universite Jean Monnet (FR)) ; Alemany Fernandez, Reyes (CERN) ; Argyropoulos, Theodoros (CERN) ; Barlow, Roger Andrew (CERN) ; Bartosik, Hannes (CERN) ; Bellodi, Giulia (CERN) ; Bilko, Kacper (Universite Jean Monnet (FR)) ; Borburgh, Jan (CERN) et al.
The Ion Accelerator Complex, composed of a linear accelerator (Linac3) and a chain of synchrotrons (Low Energy Ion Ring: LEIR, Proton Synchrotron: PS, Super Proton Synchrotron: SPS and the Large Hadron Collider: LHC) will operate oxygen ion beams for Oxygen–Oxygen (O–O) and proton–Oxygen (p–O) collisions in the LHC in Run 3. [...]
CERN-ACC-NOTE-2024-0001.
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2024. - 29 p.
Full text
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8.
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Findings of the Physics Beyond Colliders ECN3 Beam Delivery Task Force
/ Ahdida, Claudia (CERN) ; Bartosik, Hannes (CERN) ; Bernhard, Johannes (CERN) ; Brugger, Markus (CERN) ; Calviani, Marco (CERN) ; Colinet, Antoine (CERN) ; Esposito, Luigi Salvatore (CERN) ; Franqueira Ximenes, Rui (CERN) ; Fraser, Matthew Alexander (CERN) ; Gautheron, Fabrice (University of Patras (GR)) et al.
The ECN3 Beam Delivery Task Force was mandated by the PBC Study Group to assess the technical feasibility of increasing the proton beam intensity to the ECN3 hall of the North Area to satisfy the demands of a compelling set of PBC experimental physics proposals. This report summarises the findings of the Task Force that converge on a technically feasible solution with an implementation timeline that could exploit and build upon the investment already foreseen as part of Phase 1 of the NA-CONS project, and take the SPS complex into a new intensity frontier for Fixed Target physics in Run4..
CERN-PBC-REPORT-2023-001.-
Geneva : CERN, 06 - 43.
PBC ECN3 TF Final Report: PDF;
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9.
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Beam-induced heat loads on the LHC arc beam screens with different beam and machine configurations: experiments and comparison against simulations
/ Iadarola, Giovanni (CERN) ; Skripka, Galina (Joint Institute for Nuclear Research (RU)) ; Albert, Markus (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Andujar, Oscar (CERN) ; Antipov, Sergey (CERN) ; Arduini, Gianluigi (CERN) ; Argyropoulos, Theodoros (CERN) ; Bradu, Benjamin (CERN) ; Bartosik, Hannes (CERN) et al.
Electron cloud (e-cloud) effects are among the main performance limitations for the operation of the Large Hadron Collider (LHC) with 25 ns bunch spacing. [...]
CERN-ACC-NOTE-2019-0057.
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2019. - 50 p.
Full text
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10.
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