CERN Accelerating science

LHC

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2022-01-27
14:58
Start collisions at 1m β∗ (MD 3349) / Calia, Andrea (CERN) ; Jacquet, Delphine (CERN) ; Wenninger, Jorg (CERN) ; Fuchsberger, Kajetan ; Hostettler, Michi (CERN)
This document summarises the LHC Machine Development session on colliding at β∗ = 1 m and squeezing with colliding beams to β∗ = 25 cm in IP 1 and 5 using the capabilities of the LumiServer. [...]
CERN-ACC-NOTE-2022-0006.
- 2021. - 6 p.
Full text

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2022-01-26
10:46
Simulation and Optimization Studies of the LHCb Beetle Readout ASIC and Machine Learning Approach for Pulse Shape Reconstruction / Kopciewicz, Pawel (AGH University of Science and Technology (PL)) ; Akiba, Kazu (Nikhef National institute for subatomic physics (NL)) ; Szumlak, Tomasz (AGH University of Science and Technology (PL)) ; Sitko, Sebastian Piotr ; Barter, William (Imperial College (GB)) ; Buytaert, Jan (CERN) ; Eklund, Lars (Uppsala University (SE)) ; Hennessy, Karol (University of Liverpool (GB)) ; Koppenburg, Patrick (Nikhef National institute for subatomic physics (NL)) ; Latham, Thomas Edward (University of Warwick (GB)) et al.
The optimization of the Beetle readout ASIC and the performance of the software for the signal processing based on machine learning methods are presented. The Beetle readout chip was developed for the LHCb (Large Hadron Collider beauty) tracking detectors and was used in the VELO (Vertex Locator) during Run 1 and 2 of LHC data taking. [...]
LHCb-PUB-2022-002; CERN-LHCb-PUB-2022-002.- Geneva : CERN, 2021 - 12. - Published in : Sensors 21 (2021) 6075 Fulltext: sensors-21-06075-v2 (2) - PDF; LHCb-PUB-2022-002 - ;

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2022-01-25
17:24
Power Supply System with Integrated Energy Storage for Superconducting Magnets / Papamichali, Maria (EPFL, Switzerland) ; Coulinge, Emilien (EPFL, Switzerland) ; Freijedo, Francisco D. (EPFL, Switzerland) ; Dujic, Dražen (EPFL, Switzerland)
To achieve higher collision rate of particle beams, CERN Large Hadron Collider requires new superconducting magnets and associated power supplies at the interaction points for its High-Luminosity upgrade. A new family of two-quadrant converters with integrated energy storage is studied in order to increase the system availability and energy efficiency. [...]
2018 - Published in : (2018) , pp. 8403072
In : International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM Europe 2018), Nuremberg, Germany, 5 - 7 Jun 2018, pp.8403072

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2022-01-19
09:10
LHCspin: a polarized internal target for the LHC / Lenisa, Paolo (Ferrara U. ; INFN, Ferrara) ; Steffens, Erhard (Erlangen - Nuremberg U.) ; Carassiti, Vito (INFN, Ferrara ; Ferrara U.) ; Ciullo, Giuseppe (Ferrara U. ; INFN, Ferrara) ; Di Nezza, Pasquale (Frascati) ; Pappalardo, Luciano (Ferrara U. ; INFN, Ferrara) ; Vasilyev, Alexander A (PNPI, CSTD)
The LHCspin project aims to bring both unpolarized and polarized physics at the LHC through the installation of a gaseous fixed target at the upstream end of the LHCb detector. The forward geometry of the LHCb spectrometer (2 < eta < 5) is perfectly suited for the reconstruction of particles produced in fixed-target collisions. [...]
SISSA, 2020 - 10 p. - Published in : PoS PSTP2019 (2020) 025 Fulltext: PDF;
In : 18th International Workshop on Polarized Sources, Targets, and Polarimetry (PSTP 2019), Knoxville, United States, 23 - 27 Sep 2019, pp.025

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2022-01-18
10:02
Framework for automatic superconducting magnet model generation & validation against transients measured in LHC magnets / Janitschke, Marvin
Superconducting magnet circuits are a key part of particle accelerators [...]
CERN-THESIS-2022-004 - 134 p.


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2022-01-12
06:18
Development of a rotating-coil scanner for superconducting accelerator magnets / Rogacki, Piotr (CERN ; RWTH Aachen U.) ; Fiscarelli, Lucio (CERN) ; Russenschuck, Stephan (CERN) ; Hameyer, Kay (RWTH Aachen U.)
The High-Luminosity upgrade project for the Large Hadron Collider (HL-LHC) at CERN (Conseil Européen pour la Recherche Nucléaire) will require new superconducting magnets for the insertion regions. Among these magnets, the new triplet quadrupoles, based on Nb3Sn technology, require magnetic-field measurements of a high precision in the field angle and multipole field errors. [...]
2020 - 9 p. - Published in : J. Sensors Sensor Syst. 9 (2020) 99-107 Fulltext: PDF;

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2022-01-12
06:18
A Safety System for Human Radiation Protection and Guidance in Extreme Environmental Conditions / Adamidi, Eleni S (Natl. Tech. U., Athens) ; Gazis, Evangelos N (Natl. Tech. U., Athens ; CERN) ; Nikita, Konstantina S (Natl. Tech. U., Athens)
We present a safety system designed to ensure human radiation protection and provide real-time guidance in extreme environmental conditions. This system was developed and tested in the complex experimental infrastructure of the ATLAS underground cavern at CERN, where personnel safety is crucial, especially during maintenance periods. [...]
2020 - 11 p. - Published in : IEEE Syst. J. 14 (2020) 1384-1394

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2022-01-12
04:13
High intensity proton beam impact at 440 GeV/c on Mo and Cu coated CfC/graphite and SiC/SiC absorbers for beam intercepting devices / Maestre, Jorge (CERN ; Granada U.) ; Bahamonde, Cristina (CERN) ; Garcia, Inigo Lamas (CERN) ; Kershaw, Keith (CERN) ; Biancacci, Nicolo (CERN) ; Busom, Josep (CERN) ; Frankl, Matthias (CERN ; PSI, Villigen) ; Lechner, Anton (CERN) ; Kurtulus, Adnan (CERN) ; Makimura, Shunsuke (J-PARC ; KEK, Tsukuba) et al.
Beam Intercepting Devices (BIDs) are essential protection elements for the operation of the Large Hadron Collider (LHC) complex. The LHC internal beam dump (LHC Target Dump Injection or LHC TDI) is the main protection BID of the LHC injection system; its main function is to protect LHC equipment in the event of a malfunction of the injection kicker magnets during beam transfer from the SPS to the LHC. [...]
arXiv:2112.04792.- 2022-01-14 - 31 p. - Published in : JINST 17 (2022) P01019 Fulltext: document - PDF; 2112.04792 - PDF;

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2021-12-08
17:44
ATLAS Elementary Particles Decorations / Velho, Mariana (Universidade Nova de Lisboa (PT)) ; Anthony, Katarina (Universita degli Studi di Udine (IT))
Explore the ATLAS seasonal activities with these free-to-download elementary particles decorations!
ATLAS-OUTREACH-2021-093.
- 2021. - 9.
Language: English

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2021-12-08
17:39
ATLAS Physics Presents Tags / Velho, Mariana (Universidade Nova de Lisboa (PT)) ; Anthony, Katarina (Universita degli Studi di Udine (IT))
Explore the ATLAS seasonal activities with these free-to-download physics presents tags!
ATLAS-OUTREACH-2021-092.
- 2021. - 3.
Language: English

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High Luminosity Large Hadron Collider (HL-LHC) (977)
FP7 HiLumi LHC Design Study (264)