CERN Accelerating science

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2024-05-23
07:32
Status and prospects of the HL-LHC project / Zerlauth, Markus (CERN) ; Brüning, Oliver (CERN)
This contribution summarizes the status of preparations and series production of key technologies for the HL-LHC upgrade project. The upgrade will be deployed in the LHC tunnel at the end of the currently ongoing third operational run of the LHC, by creating new underground areas and upgrading the existing LHC equipment, aiming to increase the data set collected by the main LHC experiments by another order of magnitude and starting operation as of 2029..
2024 - 8 p. - Published in : PoS EPS-HEP2023 (2024) 615 Fulltext: PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023, pp.615

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2024-05-23
07:32
Status of the International Muon Collider Complex Study at 10 TeV / Skoufaris, Kyriacos (CERN) /International Muon Collider Collaboration
A circular muon collider, due to strong suppression of synchrotron radiation (muons are about 207 times heavier than electrons), can provide high energy (multi-TeV) collisions using fundamental (point-like) particles improving that way the energy frontiers of lepton-antilepton machines. A unique feature of muon colliders, is the significant increase of the luminosity per beam power with beam energy. [...]
2024 - 6 p. - Published in : PoS EPS-HEP2023 (2024) 629 Fulltext: PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023, pp.629

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2024-05-23
07:32
Machine-Detector interface for multi-TeV Muon Collider / Bartosik, Nazar (INFN, Turin ; CERN) ; Calzolari, Daniele (CERN ; INFN, Padua ; Padua U.) ; Castelli, Luca (Rome U. ; INFN, Rome) ; Lechner, Anton (CERN) ; Lucchesi, Donatella (INFN, Padua ; CERN ; Padua U.) /International Muon Collider Collaboration
One of the challenges of the multi-TeV muon collider is mitigating the effects of beam-induced background. The primary contribution to this background has been identified as decay products of the muon beams. [...]
2024 - 6 p. - Published in : PoS EPS-HEP2023 (2024) 630 Fulltext: PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023, pp.630

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2024-05-23
05:07
Impact of bunch intensity asymmetry in colliders featuring strong beamstrahlung / Le Nguyen Nguyen, Khoi (CERN ; EPFL-ISIC, Lausanne ; Cambridge U.) ; Buffat, Xavier (CERN) ; Kicsiny, Peter (CERN ; EPFL-ISIC, Lausanne) ; Pieloni, Tatiana (EPFL-ISIC, Lausanne)
An analytical investigation of beamstrahlung-induced blow-up in Gaussian beams with arbitrary dimensions is presented, using various approximations for the strength of the hourglass effect and crab waist scheme. [...]
arXiv:2404.09012.
- 25 p.
Fulltext

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2024-05-21
12:34
Chamonix Workshop 2024 summary / Lamont, Mike (CERN) ; Jones, Rhodri (CERN)
The Chamonix Workshop 2024 took place from 29 January to 1 February 2024 at the “Majestic” conference centre in Chamonix. [...]
CERN-ACC-NOTE-2024-0010.
- 2024. - 63 p.

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2024-05-21
12:21
LHC Performance Workshop 2022 summary / Lamont, Mike (CERN) ; Jones, Rhodri (CERN)
The LHC Performance Workshop took place from 24 to 27 January 2022 via video conference. [...]
CERN-ACC-NOTE-2024-0009.
- 2024. - 56 p.
Full text

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2024-05-16
07:44
Periodicity five lattice proposal for a cpedm prototype ring / Cilento, Vera (CERN) ; Carli, Christian (CERN)
The community studying facilities to measure a possible Electric Dipole Moment of a charged particle (cpEDM) in a storage ring agreed that a Prototype Storage-Ring (PSR) is required as intermediate step to address critical questions, gain experience and rule out showstoppers. In what follows, a new lattice proposal of the PSR with a periodicity five is described and spin tracking simulations are shown. [...]
2023 - Published in : JACoW IPAC 2023 (2023) MOPA086 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA086

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2024-05-16
06:01
Derivation and interpretation of parameters describing betatron mismatch and chromaticity / Carli, Christian (CERN) ; Skoufaris, Kyriacos (CERN)
Expressions to quantify betatron mismatch and chromatic effects are frequently used in accelerator physics, but their derivations are not given in standard text books, making their interpretation difficult. First parameters describing betatron mismatch are introduced using normalization with respect to reference Twiss parameters describing a lattice. [...]
2023 - Published in : JACoW IPAC 2023 (2023) WEPL026 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPL026

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2024-05-15
15:43
Non-invasive Beam Diagnostic Development for FCC using Cherenkov Diffraction Radiation in Dielectric Materials / Schloegelhofer, Andreas
Cherenkov diffraction radiation (ChDR) refers to the emission of electromagnetic radiation when a charged particle travels in the vicinity of dielectric matter, and the particle’s velocity exceeds the phase velocity of electromagnetic radiation in the dielectric [...]
CERN-THESIS-2024-054 - 204 p.


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2024-05-15
14:38
LHC MD 6944: RF Voltage Calibration / Karlsen-Baeck, Birk Emil (Sapienza Universita e INFN, Roma I (IT)) ; Argyropoulos, Theodoros (CERN) ; Calaga, Rama (CERN) ; Damerau, Heiko (CERN) ; Dlugosz, Dominika Agnieszka ; Karpov, Ivan (CERN) ; Timko, Helga (CERN)
This note summarizes the procedure and results from the MD on beam-based voltage calibration of the RF system. [...]
CERN-ACC-NOTE-2024-0008.
- 2024. - 24 p.
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