CERN Accelerating science

LHC

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2020-03-20
08:36
Report from ARIES Muon Collider Workshop in Padua / Zimmermann, Frank (CERN) ; Zanetti, Marco (INFN, Padua)
Several novel concepts could help the muon collider become a reality. These concepts include parametric ionization cooling, low-emittance muon production by positron annihilation (LEMMA scheme), production of low-emittance muon or positron beams using the Gamma Factory concept, and strategies to upgrade large accelerator complexes, like the LHC or the FCC, into a highest-energy muon collider. [...]
JACOW, 2019 - 5 p. - Published in : 10.18429/JACoW-eeFACT2018-MOYBA04 Fulltext: moyba04 - PDF; 74491b38e7f06efb770c2932553e8df6 - PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.MOYBA04

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2020-03-19
07:03
FCC-ee Operation Model, Availability & Performance / Zimmermann, Frank (CERN) ; Apollonio, Andrea (CERN) ; Benedikt, Michael (CERN) ; Brunner, Olivier (CERN) ; Funakoshi, Yoshihiro (KEK, Tsukuba) ; Milardi, Catia (Frascati) ; Myers, Stephen (CERN) ; Niemi, Arto (Tampere U. of Tech.) ; Oide, Katsunobu (KEK, Tsukuba) ; Qin, Qing (Beijing, Inst. High Energy Phys.) et al.
This document discusses the machine parameters and expected luminosity performance for the proposed future circular lepton collider FCC-ee. Particular emphasis is put on availability, physics run time, and efficiency. [...]
JACOW, 2019 - 7 p. - Published in : 10.18429/JACoW-eeFACT2018-WEPAB03 Fulltext: d6c8f5321207eff74262e996e195834c - PDF; wepab03 - PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.WEPAB03

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2020-03-10
09:08
An Insight on the Thermal and Mechanical Numerical Evaluations for the High-Luminosity LHC Crab Cavities / Cano-Pleite, Eduardo (CERN) ; Amorim Carvalho, Alexandre (CERN) ; Artoos, Kurt (CERN) ; Calaga, Rama (CERN) ; Capatina, Ofelia (CERN) ; Capelli, Teddy (CERN) ; Carra, Federico (CERN) ; Dassa, Luca (CERN) ; Garlasché, Marco (CERN) ; Leuxe, Raphael (CERN) et al.
One of the key devices of the HL-LHC project are SRF crab cavities. A cryomodule with two Double Quarter Wave (DQW) crab cavities has been successfully fabricat-ed and tested with beam at CERN whereas the Radio Frequency Dipole (RFD) crab cavities are currently on its fabrication process. [...]
2019 - 6 p. - Published in : (2019) , pp. 931-936 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.931-936

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2020-03-10
09:08
Design of LHC Crab Cavities Based on DQW Cryomodule Test Experience / Verdú-Andrés, Silvia (Brookhaven Natl. Lab.) ; Calaga, Rama (CERN) ; Cano-Pleite, Eduardo (CERN) ; Leuxe, Raphael (CERN) ; Mitchell, James (Lancaster U. ; CERN)
A cryomodule with two Double-Quarter Wave (DQW) cavities was designed, built and tested with the SPS beam in 2018. Each cavity was equipped with an rf pickup antenna to monitor field amplitude and phase. [...]
SRF2019.- 2019 - 4 p. - Published in : 10.18429/JACoW-SRF2019-THP035 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.927-930

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2020-03-10
09:08
Operation Experience with the LHC ACS RF System / Turaj, Katarzyna (CERN) ; Arnaudon, Luca (CERN) ; Baudrenghien, Philippe (CERN) ; Brunner, Olivier (CERN) ; Butterworth, Andrew (CERN) ; Gerigk, Frank (CERN) ; Karppinen, Mikko (CERN) ; Maesen, Pierre (CERN) ; Montesinos, Eric (CERN) ; Peauger, Franck (CERN) et al.
The LHC accelerating RF system consists of two cryomodules per beam, each containing four single-cell niobium sputtered 400.8 MHz superconducting cavities working at 4.5 K and an average accelerating voltage of 2 MV. The paper summarises the experience, availability and evolution of the system within 10 years of operation. [...]
SRF2019.- 2019 - 4 p. - Published in : 10.18429/JACoW-SRF2019-THP031 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.913-916

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2020-03-06
16:25
MD1787 - LHC TDI tune shift measurement at injection / Amorim, David (Universite Grenoble-Alpes (FR)) ; Biancacci, Nicolo (CERN) ; Carbajo Perez, David (CERN) ; Carver, Lee Robert (University of Liverpool (GB)) ; Metral, Elias (CERN) ; Rijoff, Tatiana Libera ; Salvant, Benoit (CERN) ; Soderen, Martin (CERN) ; Valuch, Daniel (CERN)
This report summarizes the results of the backup activity performed after cancellation of the MD1787 [...]
CERN-ACC-NOTE-2020-0015.
- 2019. - 3 p.
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2020-03-06
09:06
Status and Plans for the CERN Accelerator Complex / Collier, Paul (CERN)
CERN hosts the largest accelerator complex in the world. The flagship machine is the LHC providing proton and heavy ion collisions at the energy frontier to 4 main experiments and a number of smaller ones. [...]
SISSA, 2019 - 10 p. - Published in : PoS LeptonPhoton2019 (2019) 002 Fulltext: PDF;
In : XXIX International Symposium on Lepton Photon Interactions at High Energies, Toronto, Canada, 5 - 10 Aug 2019, pp.002

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2020-03-04
06:21
Modeling of the emittance growth due to decoherence in collision at the Large Hadron Collider / Buffat, X (CERN) ; Herr, W (CERN) ; Pieloni, T (Ecole Polytechnique, Lausanne) ; Valuch, D (CERN)
The transverse emittance growth rate of colliding hadron beams driven by external sources of noise is investigated based on existing analytical model as well as on macro-particle simulations and comparison to experimental data at the Large Hadron Collider (LHC). It is shown that an analytical description of the emittance growth rate neglecting the existence coherent beam-beam mode can nevertheless provide accurate estimate for operational conditions, featuring notably a high chromaticity. [...]
2020 - 9 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 021002

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2020-02-28
09:05
Extension of Signal Monitoring Applications with Machine Learning / Obermair, Christoph
The Large Hadron Colider (LHC) is the world’s largest particle accelerator [...]
CERN-THESIS-2020-010 - Graz : Obermair Christoph, 2020-02-28. - 81 p.

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2020-02-27
23:33
Exact Solutions of Indirect Transverse Field Effects in Elongated Structures with Applications to CERN LHC and PS / Hirlander, Simon
The understanding of the electromagnetic interaction of the particle beam with the surrounding elements - so-called indirect space charge driven (ISCD) effects - in particle accelerators, is crucial for stable high-intensity performance [...]
CERN-THESIS-2020-009 -

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