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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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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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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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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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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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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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LHC Operational Scenarios During 2017 Run / Salvachua, Belen (CERN) ; Albert, Markus (CERN) ; Alemany-Fernández, Reyes (CERN) ; Argyropoulos, Theodoros (CERN) ; Bravin, Enrico (CERN) ; Burkhardt, Helmut (CERN) ; Crockford, Guy (CERN) ; Dumont, Jean-Charles (CERN) ; Fartoukh, Stephane (CERN) ; Fuchsberger, Kajetan (CERN) et al.
During 2017, the Large Hadron Collider LHC delivered luminosity for different physics configuration in addtion to the nominal 6.5 TeV proton-proton run. About 18.5 days were dedicated to commission and to deliver special physics to the experiments. [...]
CERN-ACC-2018-165.- 2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPMF051 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF051

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LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics / Pojer, Mirko (CERN) ; Albert, Markus (CERN) ; Alemany-Fernández, Reyes (CERN) ; Argyropoulos, Theodoros (CERN) ; Bravin, Enrico (CERN) ; Calia, Andrea (CERN) ; Crockford, Guy (CERN) ; Fartoukh, Stephane (CERN) ; Fuchsberger, Kajetan (CERN) ; Giachino, Rossano (CERN) et al.
In May 2017, the CERN Large Hadron Collider (LHC) restarted operations at 6.5 TeV using the Achromatic Telescopic Squeeze (ATS) scheme with a target beta-star of 40 cm in ATLAS and CMS. The number of bunches was progressively increased to a maximum of 2556 with emittances of 2.5 um. [...]
CERN-ACC-2018-166.- 2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPMF050 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF050

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LHC Availability 2018: Technical Stop 1 to Technical Stop 2 / 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 1 (TS1) to Technical Stop 2 (TS2) in 2018. [...]
CERN-ACC-NOTE-2018-0065. - 2018. - 18 p.
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LHC Availability 2018: Restart to Technical Stop 1 / 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 1 (TS1) in 2018. [...]
CERN-ACC-NOTE-2018-0049. - 2018. - 17 p.
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See also: similar author names
15	Walsh, D
4	Walsh, D A
2	Walsh, D M
5	Walsh, D S
2	Walsh, D.
1	Walsh, Darragh M
2	Walsh, David A
11	Walsh, David John
1	Walsh, Donald
1	Walsh, Dorothy A

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