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Generating ultra-dense pair beams using 400 GeV/c protons
/ Arrowsmith, C.D. (Oxford U.) ; Shukla, N. (CINECA) ; Charitonidis, N. (CERN) ; Boni, R. (Rochester U.) ; Chen, H. (LLNL, Livermore) ; Davenne, T. (Rutherford) ; Dyson, A. (Oxford U.) ; Froula, D.H. (Rochester U.) ; Gudmundsson, J.T. (Iceland U. ; Royal Inst. Tech., Stockholm) ; Huffman, B.T. (Oxford U.) et al.
A previously unexplored experimental scheme is presented for generating low-divergence, ultra-dense, relativistic, electron-positron beams using 400 GeV/c protons available at facilities such as HiRadMat and AWAKE at CERN. Preliminary Monte-Carlo and Particle-in-cell simulations demonstrate the possibility of generating beams containing $10^{13}-10^{14}$ electron-positron pairs at sufficiently high densities to drive collisionless beam-plasma instabilities, which are expected to play an important role in magnetic field generation and the related radiation signatures of relativistic astrophysical phenomena. [...]
arXiv:2011.04398.-
2021-05-11 - 9 p.
- Published in : Phys. Rev. Res.: 3 (2021) , no. 2, pp. 023103
Fulltext: PDF; Fulltext from publisher: PDF;
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Laboratory realization of relativistic pair-plasma beams
/ Arrowsmith, C.D. (Oxford U.) ; Simon, P. (CERN ; Darmstadt, GSI) ; Bilbao, P.J. (Lisbon, IST) ; Bott, A.F. A. (Oxford U.) ; Burger, S. (CERN) ; Chen, H. (LLNL, Livermore) ; Cruz, F.D. (Lisbon, IST) ; Davenne, T. (Rutherford) ; Efthymiopoulos, I. (CERN) ; Froula, D.H. (Rochester U.) et al.
Relativistic electron-positron plasmas are ubiquitous in extreme astrophysical environments such as black holes and neutron star magnetospheres, where accretion-powered jets and pulsar winds are expected to be enriched with such pair plasmas. Their behaviour is quite different from typical electron-ion plasmas due to the matter-antimatter symmetry of the charged components and their role in the dynamics of such compact objects is believed to be fundamental. [...]
arXiv:2312.05244.-
2024-06-12 - 14 p.
- Published in : Nature Commun. 15 (2024) 5029
Fulltext: 2312.05244 - PDF; document - PDF;
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A collinear shower algorithm for NSL non-singlet fragmentation
/ van Beekveld, Melissa (NIKHEF, Amsterdam) ; Dasgupta, Mrinal (Manchester U.) ; El-Menoufi, Basem Kamal (Monash U.) ; Helliwell, Jack (Oxford U., Theor. Phys.) ; Monni, Pier Francesco (CERN) ; Salam, Gavin P. (Oxford U., Theor. Phys. ; U. Oxford (main))
We formulate a collinear partonic shower algorithm that achieves next-to-single-logarithmic (NSL, $\alpha_s^n L^{n-1}$) accuracy for collinear-sensitive non-singlet fragmentation observables. [...]
CERN-TH-2024-125 ; Nikhef 2024-013 ; OUTP-24-05P ; arXiv:2409.08316.
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36.
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AION: An Atom Interferometer Observatory and Network
/ Badurina, L. (King's Coll. London) ; Bentine, E. (U. Oxford (main)) ; Blas, D. (King's Coll. London) ; Bongs, K. (Birmingham U.) ; Bortoletto, D. (U. Oxford (main)) ; Bowcock, T. (U. Liverpool (main)) ; Bridges, K. (U. Liverpool (main)) ; Bowden, W. (Teddington, Natl. Phys. Lab ; Imperial Coll., London) ; Buchmueller, O. (Imperial Coll., London) ; Burrage, C. (U. Nottingham) et al.
We outline the experimental concept and key scientific capabilities of AION (Atom Interferometer Observatory and Network), a proposed UK-based experimental programme using cold strontium atoms to search for ultra-light dark matter, to explore gravitational waves in the mid-frequency range between the peak sensitivities of the LISA and LIGO/Virgo/ KAGRA/INDIGO/Einstein Telescope/Cosmic Explorer experiments, and to probe other frontiers in fundamental physics. AION would complement other planned searches for dark matter, as well as probe mergers involving intermediate mass black holes and explore early universe cosmology. [...]
arXiv:1911.11755; AION-2019-001; CERN-TH-2019-199.-
2020-05-06 - 28 p.
- Published in : JCAP 2005 (2020) 011
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Introduction to the PanScales framework, version 0.1
/ van Beekveld, Melissa (Nikhef, Amsterdam) ; Dasgupta, Mrinal (Manchester U.) ; El-Menoufi, Basem Kamal (Manchester U. ; Monash U.) ; Ravasio, Silvia Ferrario (CERN) ; Hamilton, Keith (U. Coll. London) ; Helliwell, Jack (Oxford U.) ; Karlberg, Alexander (CERN) ; Medves, Rok (Oxford U.) ; Monni, Pier Francesco (CERN) ; Salam, Gavin P. (Oxford U.) et al.
In this article, we document version 0.1 of the PanScales code for parton shower simulations. With the help of a few examples, we discuss basic usage of the code, including tests of logarithmic accuracy of parton showers. [...]
arXiv:2312.13275; CERN-TH-2023-238; Nikhef 2023-026; OUTP-23-16P.-
2024-06 - 25 p.
- Published in : 10.21468/SciPostPhysCodeb.31
Fulltext: 2312.13275 - PDF; Publication - PDF;
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Emittance Preservation in an Aberration-Free Active Plasma Lens
/ Lindstrøm, C.A. (Oslo U.) ; Adli, E. (Oslo U.) ; Boyle, G. (DESY) ; Corsini, R. (CERN) ; Dyson, A.E. (Oxford U.) ; Farabolini, W. (CERN) ; Hooker, S.M. (Oxford U. ; JAI, UK) ; Meisel, M. (DESY) ; Osterhoff, J. (DESY) ; Röckemann, J.-H. (DESY) et al.
Active plasma lensing is a compact technology for strong focusing of charged particle beams, which has gained considerable interest for use in novel accelerator schemes. While providing kT/m focusing gradients, active plasma lenses can have aberrations caused by a radially nonuniform plasma temperature profile, leading to degradation of the beam quality. [...]
arXiv:1808.03691.-
2018-11-07 - 6 p.
- Published in : Phys. Rev. Lett. 121 (2018) 194801
- Published in : Phys. Rev. Lett. 122 (2019) 129901
Fulltext: PDF; Fulltext from Publisher: PDF;
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Overview of the CLEAR plasma lens experiment
/ Lindstrøm, C.A. (Oslo U.) ; Sjobak, K.N. (Oslo U.) ; Adli, E. (Oslo U.) ; Röckemann, J.-H. (DESY) ; Schaper, L. (DESY) ; Osterhoff, J. (DESY) ; Dyson, A.E. (Oxford U.) ; Hooker, S.M. (Oxford U.) ; Farabolini, W. (CERN) ; Gamba, D. (CERN) et al.
Discharge capillary-based active plasma lenses are a promising new technology for strongly focusing charged particle beams, especially when combined with novel high gradient acceleration methods. Still, many questions remain concerning such lenses, including their transverse field uniformity, limitations due to plasma wakefields and whether they can be combined in multi-lens lattices in a way to cancel chromaticity. [...]
arXiv:1801.00956.-
2018-01-31 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 909 (2018) 379-382
Fulltext: 10.1016.j.nima.2018.01.063 - PDF; arXiv:1801.00956 - PDF;
In : 3rd European Advanced Accelerator Concepts Workshop, La Biodola, Isola d'Elba, Italy, 24 - 30 Sep 2017, pp.379-382
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Mixed QCD-electroweak corrections to W-boson production in hadron collisions
/ Behring, Arnd (KIT, Karlsruhe, TTP) ; Buccioni, Federico (Oxford U., Theor. Phys.) ; Caola, Fabrizio (Oxford U., Theor. Phys. ; Oxford U.) ; Delto, Maximilian (KIT, Karlsruhe, TTP) ; Jaquier, Matthieu (KIT, Karlsruhe, TTP) ; Melnikov, Kirill (KIT, Karlsruhe, TTP) ; Röntsch, Raoul (CERN)
We compute mixed QCD-electroweak corrections to the fully-differential production of an on-shell $W$ boson. Decays of $W$ bosons to lepton pairs are included in the leading order approximation. [...]
arXiv:2009.10386; TTP20-033; P3H-20-048; OUTP-20-09P; CERN-TH-2020-152.-
2021-01-28 - 40 p.
- Published in : Phys. Rev. D 103 (2021) 013008
Article from SCOAP3: PDF; Fulltext: PDF;
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