CERN Accelerating science


Letzte Einträge:
Lead evaporation instabilities and failure mechanisms of the micro oven at the GTS-LHC ECR ion source at CERN / Kövener, T (CERN ; U. Hamburg (main)) ; Küchler, D (CERN) ; Toivanen, V A (Jyvaskyla U.)
The GTS-LHC ECR ion source (named after the Grenoble Test Source and the Large Hadron Collider) at CERN provides heavy ion beams for the chain of accelerators from Linac3 up to the LHC for high energy collision experiments and to the Super Proton Synchrotron for fixed target experiments. During the standard operation, the oven technique is used to evaporate lead into the source plasma to produce multiple charged lead ion beams. [...]
2020 - 5 p. - Published in : Rev. Sci. Instrum. 91 (2020) 013320

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Analysis of 440 GeV proton beam–matter interaction experiments at the High Radiation Materials test facility at CERN / Burkart, F (Frankfurt U. ; CERN) ; Schmidt, R (CERN) ; Raginel, V (CERN) ; Wollmann, D (CERN) ; Tahir, N A (Darmstadt, GSI) ; Shutov, A (IPCP, Chernogolovka) ; Piriz, A R (Castilla-La Mancha U.)
In a previous paper [Schmidt et al., Phys. Plasmas 21, 080701 (2014)], we presented the first results on beam–matter interaction experiments that were carried out at the High Radiation Materials test facility at CERN. [...]
AIP, 2015 - 9 p. - Published in : J. Appl. Phys. 118 (2015) 055902

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Measurement of $D^0-\overline{D^0}$ mixing parameters and search for $CP$ violation in $D^0 \rightarrow K^+ \pi^-$ decays with LHCb Run 2 data / Ribatti, Roberto (Universita & INFN Pisa (IT))
$D^0-\overline{D^0}$ mixing parameters are measured in the decay-time-dependent ratio of $D^0 \rightarrow K^+ \pi^-$ to $D^0 \rightarrow K^- \pi^+$ rates. The analysis uses a data sample of proton-proton collisions corresponding to an integrated luminosity of $5.9\,\text{fb}^{-1}$ collected by LHCb experiment from 2015 to 2018 at the center-of-mass energy of $13$ TeV. [...]
CERN-THESIS-2019-298.- Fulltext: PDF; External link: Approve this document (restricted)

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Anomaly detection for the injection kickermagnets of the CERN Large HadronCollider / Dewitte, Thiebout Thomas
Reliability, availability and maintainability are parameters that determine if a large-scale accelerator system can be operated in a sustainable and cost effective manner. Beam transfer equipment such as kicker systems are critical components with potential significant impact on the global performance of the entire machine complex [...]
CERN-THESIS-2019-294.- 85 p. Fulltext: PDF; External link: Approve this document (restricted)

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MD4944: Local linear coupling measurement at the IPs / Persson, Tobias Hakan Bjorn (CERN) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Hofer, Michael (Vienna University of Technology (AT)) ; Maclean, Ewen Hamish (University of Malta (MT)) ; Tomas Garcia, Rogelio (CERN) ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES))
It was observed that a large local linear coupling around IP2 reduced the luminosity during the 2018 ion run. [...]
- 2020. - 9 p.

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LHC status and performance / Wenninger, Jorg (CERN)
The CERN Large Hadron Collider operated during Run 2 (2015-2018) at a beam energy of 6.5 TeV. This period saw an important increase in performance through improvements in the LHC and an increased beam quality from its injectors, leading to a peak luminosity that exceeds the LHC design luminosity by more than a factor two. [...]
SISSA, 2018 - 9 p. - Published in : PoS CHARGED2018 (2019) 001 Fulltext: PDF; External link: PoS server
In : 7th workshop on prospects for charged Higgs discovery at colliders, Uppsala, Sweden, 25 - 28 Sep 2018, pp.001

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A Comparative Study of Radiation-Tolerant Fiber Optic Sensors for Relative Humidity Monitoring in High-Radiation Environments at CERN / Berruti, G (CERN ; Sannio U.) ; Consales, M (Sannio U.) ; Borriello, A (CNR, IMCB) ; Giordano, M (CNR, IMCB) ; Buontempo, S (INFN, Naples) ; Makovec, A (Debrecen U.) ; Breglio, G (U. Naples (main)) ; Petagna, P (CERN) ; Cusano, A (Sannio U.)
In this paper, we report a comparative study of fiber optic sensors for applications of relative humidity (RH) monitoring in high-radiation environments. [...]
2014. - 15 p.

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MD 3584: Long-Range Beam-Beam 2018 / Karastathis, Nikos ; Fartoukh, Stephane (CERN) ; Kostoglou, Sofia (National Technical Univ. of Athens (GR)) ; Papaphilippou, Yannis (CERN) ; Pojer, Mirko (CERN) ; Poyet, Axel (Universite Grenoble-Alpes (FR)) ; Solfaroli Camillocci, Matteo (CERN) ; Sterbini, Guido (CERN)
A recurrent issue of the LHC operation, observed both during Run1 and Run2 is the asymmetric behaviour of the two beams in terms of particle losses. [...]
- 2020. - 29 p.
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Study of the Transverse Mode Coupling Instability in the CERN Large Hadron Collider / Amorim, David
The High-Luminosity upgrade of the CERN LHC will increase the performance of the accelerator and the potential physics discoveries [...]
CERN-THESIS-2019-272 -

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LHC MD 2401: Beam-Based Measurement of the MKD Rise Time / Wiesner, Christoph (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Fraser, Matthew Alexander (CERN) ; Hessler, Christoph ; Magnin, Nicolas (CERN) ; Renner, Elisabeth (Vienna University of Technology (AT))
This note summarises the beam-based measurements of the MKD rise time for both LHC beams performed during MD4 on December 2nd, 2017 and discusses the results [...]
- 2018. - 6 p.
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