CERN Accelerating science

LHC

Darreres entrades:
2020-01-23
17:31
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. [...]
CERN-ACC-NOTE-2020-0011.
- 2020. - 29 p.
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2020-01-23
14:41
Study of the Transverse Mode Coupling Instability in the CERN Large Hadron Collider / Amorim, David (Universite Grenoble-Alpes (FR))
The High-Luminosity upgrade of the CERN LHC will increase the performance of the accelerator and the potential physics discoveries. The beam intensity will be multiplied by two to increase the collider luminosity. [...]
CERN-THESIS-2019-272.- Fulltext: PDF; External link: Approve this document (restricted)

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2020-01-23
14:37
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 [...]
CERN-ACC-NOTE-2020-0010.
- 2018. - 6 p.
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2020-01-17
14:37
LHC MD4044: Asynchronous Beam Dump Test with Bunched Beam at Flat Top / Wiesner, Christoph (CERN) ; Apollonio, Andrea (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Frankl, Matthias Immanuel ; Fraser, Matthew Alexander (CERN) ; Hessler, Christoph ; Lechner, Anton (CERN) ; Magnin, Nicolas (CERN) et al.
This note summarises the LHC Machine Development (MD) 4044, which studied the beam-loss and quench behaviour during asynchronous beam dumps at injection and at top energy using bunched beam in the abort gap. [...]
CERN-ACC-NOTE-2020-0009.
- 2020. - 15 p.
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2020-01-17
14:34
LHC MD2930: Asynchronous Beam Dump Test with Bunched Beam / Wiesner, Christoph (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Fraser, Matthew Alexander (CERN) ; Hessler, Christoph ; Lechner, Anton (CERN) ; Magnin, Nicolas (CERN) ; Renner, Elisabeth (Vienna University of Technology (AT)) ; Wollmann, Daniel (CERN) et al.
This note summarises the results of LHC Machine Development (MD) 2930, which studied the beam-loss behaviour during asynchronous beam dumps at 450 GeV and at 6.5 TeV using bunched beam in the abort gap. [...]
CERN-ACC-NOTE-2020-0008.
- 2020. - 10 p.
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2020-01-16
17:27
An alternative method to measure amplitude dependence of the closest tune approach / Maclean, Ewen Hamish (University of Malta (MT)) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Persson, Tobias Hakan Bjorn (CERN) ; Tomas Garcia, Rogelio (CERN) ; Fuchsberger, Kajetan
In the linear regime, a minimum closest approach of the fractional horizontal and vertical tunes exists, due to linear coupling between the transverse planes. [...]
CERN-ACC-NOTE-2020-0007.
- 2020.
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2020-01-15
16:59
Machine learning for early fault detection in accelerator systems / Apollonio, Andrea (CERN) ; Cartier-Michaud, Thomas (CERN) ; Felsberger, Lukas (Ludwig Maximilians Universitat (DE)) ; Mueller, Andreas (University of Applied Sciences Darmstadt (DE)) ; Todd, Benjamin (CERN)
With the development of systems based on a combination of mechanics, electronics and – more and more - software components, increasing system complexity is a de facto trend in the engineering world. [...]
CERN-ACC-NOTE-2020-0005.
- 2020. - 22 p.
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2020-01-15
16:47
Availability projections for the CERN injector complex following the LHC Injectors Upgrade / Apollonio, Andrea (CERN)
One of the main goals of the CERN Long-Shutdown 2 (LS2) is to improve the performance of the injector complex, both regarding beam quality and availability, in the framework of the LHC Injectors Upgrade (LIU) project [1]. [...]
CERN-ACC-NOTE-2020-0004.
- 2020.
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2020-01-15
16:37
LHC MD 3205: Beam Screen Shielding from QH Discharge at 70 K / Wiesner, Christoph (CERN) ; Bortot, Lorenzo (Technische Universitaet Darmstadt (DE)) ; Lindstrom, Bjorn Hans Filip (Uppsala University (SE)) ; Mentink, Matthias (CERN) ; Ravaioli, Emmanuele (CERN) ; Richtmann, Lea Caterina (Universitaet Hannover (DE)) ; Valette, Matthieu ; Wollmann, Daniel (CERN)
This note summarises the results of LHC Machine Development (MD) 3205, performed on October 31st 2018. [...]
CERN-ACC-NOTE-2020-0003.
- 2020.
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2020-01-15
13:58
Machine learning for early fault detection in accelerator systems / Apollonio, Andrea (CERN) ; Cartier-Michaud, Thomas (CERN) ; Felsberger, Lukas (Ludwig Maximilians Universitat (DE)) ; Mueller, Andreas (University of Applied Sciences Darmstadt (DE)) ; Todd, Benjamin (CERN)
With the development of systems based on a combination of mechanics, electronics and – more and more - software components, increasing system complexity is a de facto trend in the engineering world. [...]
CERN-ACC-2020-0004.
- 2020. - 22 p.
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