CERN Accelerating science

Projects, Upgrade and Consolidation Projects

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2018-12-07
10:50
Dynamic aperture studies for HL-LHC V1.0 / Cai, Yunhai ; De Maria, Riccardo (CERN) ; Giovannozzi, Massimo (CERN) ; Nosochkov, Yuri (SLAC National Accelerator Laboratory (US)) ; Van Der Veken, Frederik (University of Malta (MT))
Intense efforts have been devoted to the detailed study of the dynamic aperture of the HL-LHC V1.0 optics and layout version, without beam-beam effects, for several configurations, differing by optical properties or properties of the field quality of the new magnets for HL-LHC [...]
CERN-ACC-2018-0054.
- 2018. - 42 p.

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2018-11-22
10:02
Integration of Wireless Mobile Equipment in Vacuum Supervisory Applications / Blanchard, Sebastien (CERN) ; Ferreira, Rodrigo (CERN) ; Gomes, Paulo (CERN)
At first sight, the data acquisition and remote control of equipment temporary used during the commissioning phase of a vacuum system seems not to be a high priority requirement [...]
CERN-ACC-NOTE-2018-0076.
- 2018. - 14 p.

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2018-11-21
14:13
TDIS pressure profile simulations after LS2 / Ribes Metidieri, Patricia (University of Barcelona (ES)) ; Yin Vallgren, Christina (CERN) ; Skripka, Galina (CERN) ; Iadarola, Giovanni (CERN) ; Bregliozzi, Giuseppe (CERN)
During the LS2 (Long Shutdown 2), the current TDI (Beam Absorber for Injection) will be replaced by the new so called, TDIS (Beam Absorber for Injection Segmented). [...]
CERN-ACC-NOTE-2018-0075.
- 2018. - 18 p.
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2018-11-16
14:11
Radiation levels in the LHC during the 2015 Pb-Pb and 2016 p-Pb run and mitigation strategy for the electronic systems during HL-LHC operation / Martinella, Corinna (University of Jyvaskyla (FI)) ; Bahamonde Castro, Cristina (Ministere des affaires etrangeres et europeennes (FR)) ; Lechner, Anton (CERN) ; Danzeca, Salvatore (CERN) ; Kadi, Yacine (CERN) ; Brugger, Markus (CERN) ; Garcia Alia, Ruben (CERN)
During the Pb-Pb and p-Pb operations of LHC, high localized beam losses can induce a risk of failure for the electronic systems installed in the tunnel. [...]
CERN-ACC-NOTE-2018-0073.
- 2018. - 13 p.
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2018-09-20
15:05
A High-Brilliance Angstrom-FEL based on the LHeC / Nergiz, Zafer (Ankara University Institute of Accelerator Technologies (TR)) ; Aksakal, Husnu (Kahramanmaras Sutcu Imam Universitesi (TR)) ; Zimmermann, Frank (CERN)
The Large Hadron electron Collider (LHeC) is a proposed future particle physics project colliding 60 GeV electrons from a recirculating energy-recovery linac (ERL) with 7 TeV protons stored in the LHC. [...]
CERN-ACC-NOTE-2018-0061 ; ARIES 18-001.
- 2018. - 6 p.
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2018-05-31
13:49
Crab Cavity effects on transverse distribution evolution and tail cleaning in the HL-LHC / Baudrenghien, Philippe (CERN) ; Mastoridis, Themistoklis (California Polytechnic State Univ. (US)) ; Steeper, S (California Polytechnic State Univ. (US)) ; Tucker, D (California Polytechnic State Univ. (US)) ; Wieker, Devin (California Polytechnic State Univ. (US))
This work presents the transverse action and tune distribution evolution as a function of the Crab Cavity RF noise Power Spectral Density (PSD). [...]
CERN-ACC-NOTE-2018-0042.
- 2018. - 10 p.
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2018-05-22
11:55
LHCb Upgrades and operation at 1034 cm-2 s-1 luminosity –A first study / Efthymiopoulos, Ilias (CERN) ; Arduini, Gianluigi (CERN) ; Baglin, Vincent (CERN) ; Burkhardt, Helmut (CERN) ; Cerutti, Francesco (CERN) ; Claudet, Serge (CERN) ; Di Girolamo, Beniamino (CERN) ; De Maria, Riccardo (CERN) ; Esposito, Luigi Salvatore (CERN) ; Karastathis, Nikos (CERN) et al.
Presently, the LHCb experiment at IP8 operates at reduced luminosity (~4.0 1032 cm-2 s-1) compared to ATLAS and CMS experiments. [...]
CERN-ACC-NOTE-2018-0038.
- 2018.
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2018-02-21
12:14
Beam-induced heat loads on the beam screens of the inner triplets for the HL-LHC / Skripka, Galina (CERN) ; Iadarola, Giovanni (CERN)
The expected heat load induced on the beam screens has been evaluated for the triplet assemblies in the four experimental Insertion Regions (IRs) of the HL-LHC [...]
CERN-ACC-NOTE-2018-0009.
- 2018. - 50 p.
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2018-01-25
13:18
Effective pile-up density as a measure of the experimental data quality for High-Luminosity LHC operational scenarios. / Medina Medrano, Luis Eduardo (CERN) ; Tomas Garcia, Rogelio (CERN) ; Arduini, Gianluigi (CERN) ; Napsuciale, Mauro (Universidad de Guanajuato)
The High-Luminosity LHC (HL-LHC) experiments will operate at unprecedented level of event pile-up from proton-proton collisions at 14TeV center-of-mass energy [...]
CERN-ACC-2018-0003.
- 2018. - 26 p.
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2017-12-21
09:43
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)
A certain number of LHC magnets and relative electrical circuits will be replaced for the HL-LHC upgrade. [...]
CERN-ACC-2017-0101.
- 2017. - 47 p.
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