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Beam-based commissioning of a novel X-band transverse deflection structure with variable polarization
/ González Caminal, P (DESY) ; Christie, F (DESY) ; D'Arcy, R (DESY) ; Jaster-Merz, S M (DESY) ; Assmann, R (DESY) ; Burkart, F (DESY) ; Conrad, B (DESY) ; Dinter, H (DESY) ; Foese, M (DESY) ; Herrmann, J (DESY) et al.
Longitudinal electron-beam diagnostics play a critical role in the operation and control of x-ray free-electron lasers, which rely on parameters such as the current profile, the longitudinal phase space, or the slice emittance of the particle distribution. On the one hand, the femtosecond-scale electron bunches produced at these facilities impose stringent requirements on the resolution achievable with the diagnostics. [...]
2024 - 19 p.
- Published in : Phys. Rev. Accel. Beams 27 (2024) 032801
Fulltext: PDF;
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The status of the energy calibration, polarization and monochromatization of the FCC-ee
/ Bauche, Jeremie (CERN) ; Blondel, Alain (CERN) ; Ciarma, Andrea (Frascati) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Bogomyagkov, Anton (Novosibirsk, IYF) ; Martens, Aurélien (IJCLab, Orsay) ; Gaskell, David (Jefferson Lab) ; Sagan, David (Cornell U.) ; Barber, Desmond (New Mexico U.) ; Shatilov, Dmitry (CERN) et al.
The Future Circular electron-positron Collider, FCC- ee, is designed for unprecedented precision for particle physics experiments from the Z-pole up to above the top-pair-threshold, corresponding to a beam energy range from 45.6 to 182.5 GeV. Performing collisions at various particle-physics resonances requires precise knowledge of the centre-of-mass energy (ECM) and collision boosts at all four interaction points. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL059
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL059
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3.
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Dark sector searches based on dielectric laser acceleration
/ Zimmermann, F (CERN) ; Ferro-Luzzi, M (CERN) ; Jacobsson, R (CERN) ; Ischebeck, R (PSI, Villigen) ; Dadashi, R (Ecole Polytechnique, Lausanne) ; Assmann, R (DESY) ; Mirian, N (DESY) ; Muggli, P (Munich, Max Planck Inst.) ; Franchetti, G (Darmstadt, GSI)
We discuss the beam requirements for indirect searches of dark matter and feebly coupled particles using advanced accelerator concepts. A parameter comparison reveals dielectric laser acceleration as a promising candidate for delivering the needed single-electron beams in the 5-100 GeV energy range or beyond. [...]
2023 - 3 p.
- Published in : JACoW IPAC 2023 (2023) MOPL068
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL068
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4.
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Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary
Terrestrial Very-Long-Baseline Atom Interferometry Workshop (TVLBAI 2023)
13 - 14 Mar 2023
- CERN, Geneva, Switzerland
/ Abend, Sven (Leibniz U., Hannover); Allard, Baptiste (LCAR, Toulouse); Alonso, Iván (Balearic Islands U.); Antoniadis, John (Crete U.); Araújo, Henrique (Imperial Coll., London); Arduini, Gianluigi (CERN); Arnold, Aidan S. (SUPA, UK ; Strathclyde U.); Aßmann, Tobias (Ulm U.); Augst, Nadja (DLR, Neustrelitz); Badurina, Leonardo (King's Coll. London ; Caltech) et al.
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter and gravitational waves. [...]
2023 - 99 p.
arXiv:2310.08183
- Published in : 10.1116/5.0185291
10.1116/5.0185291
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5.
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Snowmass'21 Accelerator Frontier Report
/ Gourlay, S. (LBNL, Berkeley) ; Raubenheimer, T. (SLAC) ; Shiltsev, V. (Fermilab) ; Arduini, G. (CERN) ; Assmann, R. (DESY) ; Barbier, C. (Oak Ridge) ; Bai, M. (SLAC) ; Belomestnykh, S. (Fermilab) ; Bermudez, S. (CERN) ; Bhat, P. (Fermilab) et al.
In 2020-2022, extensive discussions and deliberations have taken place in corresponding topical working groups of the Snowmass Accelerator Frontier (AF) and in numerous joint meetings with other Frontiers, Snowmass-wide meetings, a series of Colloquium-style Agoras, cross-Frontier Forums on muon and electron-positron colliders and the collider Implementation Task Force (ITF). [...]
arXiv:2209.14136 ; FERMILAB-FN-1207-AD.
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46.
Fermilab Library Server - eConf - Fulltext - Fulltext
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6.
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EuPRAXIA – a compact, cost-efficient particle and radiation source
/ Weikum, M K (DESY) ; Akhter, T (INFN, Naples) ; Alesini, P D (LNF, Dafne Light) ; Alexandrova, A S (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Anania, M P (LNF, Dafne Light) ; Andreev, N E (Lebedev Inst. ; Moscow, MIPT) ; Andriyash, I (SOLEIL, Saint-Aubin) ; Aschikhin, A (DESY) ; Assmann, R W (DESY) ; Audet, T (LPGP, Orsay) et al.
Plasma accelerators present one of the most suitable candidates for the development of more compact particle
acceleration technologies, yet they still lag behind radiofrequency (RF)-based devices when it comes to beam quality,
control, stability and power efficiency. The Horizon 2020-funded project EuPRAXIA (“European Plasma Research
Accelerator with eXcellence In Applications”) aims to overcome the first three of these hurdles by developing a
conceptual design for a first international user facility based on plasma acceleration. [...]
2019 - 9 p.
- Published in : AIP Conf. Proc. 2160 (2019) 040012
In : 25th Conference on Application of Accelerators in Research and Industry (CAARI 2018), Grapevine, TX, United States, 12 - 17 Aug 2018, pp.040012
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7.
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8.
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Chapter 4: High-gradient plasma and laser accelerators
/ Assmann, R (DESY ; LNF, Dafne Light) ; Gschwendtner, E (CERN) ; Cassou, K (IJCLab, Orsay) ; Corde, S (Ec. Polytech., Palaiseau (main)) ; Corner, L (Nikhef, Amsterdam) ; Cros, B (LPGP, Orsay) ; Ferrario, M (LNF, Dafne Light) ; Hooker, S (JAI, UK) ; Ischebeck, R (PSI, Villigen) ; Latina, A (CERN) et al.
Novel high-gradient accelerators have demonstrated acceleration of electrons and positrons with electric field strengths of 1 to > 100 GeV/m. This is about 10 to 1000 times higher than achieved in RF-based accelerators, and as such they have the potential to overcome the limitations associated with RF cavities. [...]
2022 - 53 p.
Fulltext: PDF;
In : European Strategy for Particle Physics - Accelerator R&D Roadmap, pp.91-143
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9.
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European Strategy for Particle Physics - Accelerator R&D Roadmap
/ Adolphsen, C. ; Mounet, N. (ed.)
The 2020 update of the European Strategy for Particle Physics emphasised the importance of an intensified and well-coordinated programme of accelerator R&D, supporting the design and delivery of future particle accelerators in a timely, affordable and sustainable way [...]
arXiv:2201.07895 ; CERN-2022-001
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2022-03-17 - 270.
(CERN Yellow Reports: Monographs ; 1/2022)
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10.23731/CYRM-2022-001
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10.
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Beam-based aperture measurements with movable collimator jaws as performance booster of the CERN Large Hadron Collider
/ Fuster-Martínez, N. (Valencia U., IFIC ; CERN) ; Aßmann, R.W. (DESY) ; Bruce, R. (CERN) ; Giovannozzi, M. (CERN) ; Hermes, P. (CERN) ; Mereghetti, A. (CERN) ; Mirarchi, D. (CERN) ; Redaelli, S. (CERN) ; Wenninger, J. (CERN)
The beam aperture of a particle accelerator defines the clearance available for the circulating beams and is a parameter of paramount importance for the accelerator performance. At the CERN Large Hadron Collider (LHC), the knowledge and control of the available aperture is crucial because the nominal proton beams carry an energy of 362 MJ stored in a superconducting environment. [...]
arXiv:2106.09656.-
2022-03-04 - 21 p.
- Published in : Eur. Phys. J. Plus 137 (2022) 305
Fulltext: document - PDF; 2106.09656 - PDF;
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