CERN Accelerating science

ATS Reports

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CLIC study update July 2019 / Latina, Andrea (CERN) ; Schulte, Daniel (CERN) ; Stapnes, Steinar (CERN)
The CLIC study submitted a number of reports as input to the update of European Strategy for Particle Physics in 2018, among them detailed descriptions of the CLIC accelerator complex and its performance. [...]
CERN-ACC-2019-0051 ; CLIC-Note-1143.
- 2019. - 4 p.

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HGS-HIRe Lecture Week on Accelerator Physics & Technology: Intensity limitations in ion beams / Metral, Elias (CERN)
This lecture week was given together with Ingo Hofmann (GSI-FAIR) and Giovanni Rumolo (CERN) from June 24th to 28th, 2019, in Laubach, Germany ( [...]
- 2019.
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Assessment of the Mechanical Properties of Ultra-High Purity Niobium after Cold Work and Heat Treatment with the HL-LHC Crab Cavities as Benchmark / Gallifa Terricabras, Adria (Universidad de Oviedo (ES)) ; Amorim Carvalho, Alexandre (CERN) ; Aviles Santillana, Ignacio (CERN) ; Barriere, Simon (CERN) ; Calaga, Rama (CERN) ; Cano Pleite, Eduardo (CERN) ; Capatina, Ofelia (CERN) ; Crouvizier, Mickael Denis (CERN) ; Dassa, Luca (CERN) ; Meyer, Mickael Sebastien (CERN) et al.
The High Luminosity Large Hadron Collider (HL-LHC) is the upgrade of the world’s largest particle collider; it will allow the full exploitation of the LHC potential and its operation beyond 2025. [...]
- 2019. - 7 p.
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Beam Instabilities in Circular Particle Accelerators / Metral, Elias (CERN)
The theory of impedance-induced bunched-beam coherent instabilities is reviewed following Laclare's formalism, adding the effect of an electronic damper in the transverse plane. [...]
- 2019. - 165 p.
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Tolerance study for accelerating structure in the CLIC main linac / Liu, Jiayang (Tsinghua University / CERN) ; Grudiev, Alexej (CERN)
The tolerances are essential for defining the fabrication shape accuracy specification as well as the structure temperature control. [...]
CERN-ACC-2019-0049 ; CLIC-Note-1142.
- 2019. - 17 p.
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The High-Luminosity Large Hadron Collider / Bruning, Oliver (CERN) ; Rossi, Lucio (CERN)
Oliver Brüning and Lucio Rossi discuss an upgrade of the Large Hadron Collider (LHC), the High-Luminosity LHC (HL-LHC), which aims to significantly increase the luminosity..
CERN-ACC-2019-0039.- Geneva : CERN, 2019 - 3 p. - Published in : Nature Rev. Phys. 1 (2019) 1 External link: Fulltext (read only)

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An Approach to Reliability Assessment of Complex Systems at CERN / Blumenschein, Miriam Ruth (CERN) ; Spasic, Jelena (CERN) ; Steckert, Jens (CERN) ; Uythoven, Jan (CERN)
This paper presents the systematic approach Reliability Requirements and Initial Risk Evaluation (RIRE) developed and used at CERN [...]
- 2019. - 6 p.
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MD#2889: 16L2 Event Dynamics and UFO Nature Investigation / Lindstrom, Bjorn Hans Filip (Uppsala University (SE)) ; Apollonio, Andrea (CERN) ; Dziadosz, Martyna (AGH University of Science and Technology (PL)) ; Gorzawski, Arkadiusz (University of Malta (MT)) ; Grob, Laura Katharina ; Holzer, Eva Barbara (CERN) ; Lechner, Anton (CERN) ; Medvedeva, Tatiana (Russian Academy of Sciences (RU)) ; Schmidt, Rudiger (Technische Universitaet Darmstadt (DE)) ; Valette, Matthieu et al.
Micrometer sized particles (UFOs) entering the beam are a known cause of localized beam losses since the beginning of high intensity beam operation, however the origin of these particles is not fully known [...]
- 2019. - 5 p.
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Update of beam dynamics requirements for HL-LHC electrical circuits / Gamba, Davide (CERN) ; Arduini, Gianluigi (CERN) ; Cerqueira Bastos, Miguel (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya (ES)) ; De Maria, Riccardo (CERN) ; Giovannozzi, Massimo (CERN) ; Martino, Michele (CERN) ; Tomas Garcia, Rogelio (CERN)
Since the publication of the document providing the specifications of the new circuits of the HL-LHC (see CERN-ACC-2017-0101), using criteria based on beam dynamics considerations, more accurate performance expectations of the power converter technology have been made available. [...]
- 2019.

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Detailed review of the LHC optics commissioning for the nonlinear era / Maclean, Ewen Hamish (University of Malta (MT)) ; Tomas Garcia, Rogelio (CERN) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya (ES)) ; Fol, Elena (Johann-Wolfgang-Goethe Univ. (DE)) ; Fuchsberger, Kajetan (CERN) ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) ; Giovannozzi, Massimo (CERN) ; Hofer, Michael (Vienna University of Technology (AT)) ; Malina, Lukas (CERN) et al.
In 2017, optics commissioning strategy for low-β∗ operation of the CERN Large Hadron Collider (LHC) underwent a major revision. [...]
- 2019.
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