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CERN Document Server 34 records found  1 - 10nextend  jump to record: Search took 0.54 seconds. 
1.
LHC availability 2017: Proton physics-setting the scence / Todd, B (CERN) ; Apollonio, A (CERN) ; Ponce, L (CERN) ; Walsh, D (CERN) ; Roderick, C (CERN)
This paper summarises the LHC machine availability for the standard proton physics period in 2017. This paper first considers operational aspects, such as beam mode ratios, beam dump causes, fill length and turnaround [...]
2019 - 12 p. - Published in : (2019) , pp. 35-46 Fulltext: PDF;
In : 8th Evian Workshop on LHC beam operation, Evian Les Bains, France, 12 - 14 Dec 2017, pp.35-46
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2.
LHC and Injector Availability: Run 2 / Todd, B (CERN) ; Apollonio, A (CERN) ; Niemi, A (CERN) ; Ponce, L (CERN) ; Roderick, C (CERN) ; Walsh, D (CERN)
This paper summarises machine availability of the LHC and injector complex, starting with an evaluation of the machine performance in 2018, working backwards to then appraise the whole of Run 2. The first section of this paper considers LHC; identifying operational aspects, beam mode ratios, beam dump causes, fill length, turnaround , a detailed breakdown of all faults and impacts, with notable faults and new root causes identified. [...]
2019 - 16 p. - Published in : , pp. 35-50 Fulltext: PDF;
In : 9th LHC Operations Evian Workshop, Evian Les Bains, France, 30 Jan - 1 Feb 2019, pp.35-50
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3.
9th LHC Operations Evian Workshop - Evian 2019   30 Jan - 1 Feb 2019  - Evian Les Bains, France  / Schaumann, M (ed.); Walsh, D (ed.)
Geneva : CERN, 2019 CERN-ACC-2019-059
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4.
Beam-induced heat loads on the LHC arc beam screens with different beam and machine configurations: experiments and comparison against simulations / Iadarola, Giovanni (CERN) ; Skripka, Galina (Joint Institute for Nuclear Research (RU)) ; Albert, Markus (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Andujar, Oscar (CERN) ; Antipov, Sergey (CERN) ; Arduini, Gianluigi (CERN) ; Argyropoulos, Theodoros (CERN) ; Bradu, Benjamin (CERN) ; Bartosik, Hannes (CERN) et al.
Electron cloud (e-cloud) effects are among the main performance limitations for the operation of the Large Hadron Collider (LHC) with 25 ns bunch spacing. [...]
CERN-ACC-NOTE-2019-0057. - 2019. - 50 p.
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5.
Operation and performance of the CERN Large Hadron Collider during proton Run 2 / Steerenberg, Rende (CERN) ; Albert, Markus (CERN) ; Alemany-Fernández, Reyes (CERN) ; Argyropoulos, Theodoros (CERN) ; Bravin, Enrico (CERN) ; Crockford, Guy (CERN) ; Dumont, Jean-Charles (CERN) ; Fuchsberger, Kajetan (CERN) ; Giachino, Rossano (CERN) ; Giovannozzi, Massimo (CERN) et al.
Run 2 of the CERN Large Hadron Collider (LHC) started in April 2015 and was successfully completed on 10th December 2018, achieving largely all goals set in terms of luminosity production. Following the first two-year long shutdown and the re-commissioning in 2015 at 6.5 TeV, the beam performance was increased to reach a peak luminosity of more than twice the design value and a colliding beam time ratio of 50%. [...]
CERN-ACC-2019-067.- 2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPMP031 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPMP031
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6.
Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294) / Buffat, Xavier (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey (CERN) ; Bartosik, Hannes (CERN) ; Crockford, Guy (CERN) ; Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Iadarola, Giovanni (CERN) ; Levens, Tom (CERN) ; Metral, Elias (CERN) ; Mounet, Nicolas (CERN) et al.
As signs of electron cloud driven instabilities at top energy were observed in MDs in 2017 even with short trains(12b), an additional experiment was performed in 2018 to assess the intensity scaling of this instability mechanism using high intensity 12b trains available from the existing injector chain, i.e [...]
CERN-ACC-NOTE-2019-0027. - 2019. - 8 p.
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7.
CERN Injector Complex Availability 2018 / Niemi, Arto (CERN) ; Apollonio, Andrea (CERN) ; Ponce, Laurette (CERN) ; Todd, Benjamin (CERN) ; Walsh, David John (CERN)
This document summarises the injector availability during 2018. [...]
CERN-ACC-NOTE-2019-0003. - 2019. - 25 p.
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8.
CERN Yellow Report Front Cover The Compact Linear Collider (CLIC) - 2018 Summary Report / Burrows, P.N. ; Catalan Lasheras, N. (ed.) ; Linssen, L. (ed.) ; Petrič, M. (ed.) ; Robson, A. (ed.) ; Schulte, D. (ed.) ; Sicking, E. (ed.) ; Stapnes, S. (ed.)
The Compact Linear Collider (CLIC) is a TeV-scale high-luminosity linear $e^+e^−$ collider under development at CERN [...]
arXiv:1812.06018 ; CERN-2018-005-M ; CERN-2018-005 CERN-2018-005-M ; CERN-2018-005. - 2018-12-14 - 112. (CERN Yellow Reports: Monographs ; 2/2018)


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9.
LHC Availability 2018: Proton Physics / Todd, Benjamin (CERN) ; Ponce, Laurette (CERN) ; Apollonio, Andrea (CERN) ; Walsh, David John (CERN)
This document summarises the LHC machine availability for the period of Restart to Technical Stop 3 (TS3) in 2018. [...]
CERN-ACC-NOTE-2018-0081. - 2018. - 23 p.
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10.
LHC Availability 2018: Technical Stop 2 to Technical Stop 3 / Todd, Benjamin (CERN) ; Ponce, Laurette (CERN) ; Apollonio, Andrea (CERN) ; Walsh, David John (CERN)
This document summarises the LHC machine availability for the period of Technical Stop 2 (TS2) to the end of standard proton physics in 2018. [...]
CERN-ACC-NOTE-2018-0072. - 2018. - 16 p.
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CERN Document Server : 34 records found   1 - 10nextend  jump to record:
See also: similar author names
15 Walsh, D
4 Walsh, D A
2 Walsh, D M
5 Walsh, D S
1 Walsh, Darragh M
5 Walsh, David
2 Walsh, David A
11 Walsh, David John
1 Walsh, Donald
1 Walsh, Dorothy A
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