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Projects, Upgrade and Consolidation Projects

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2020-01-13
11:37
The Large Hadron-Electron Collider at the HL-LHC / Bruning, Oliver (CERN) ; Klein, Max (University of Liverpool (GB))
The Large Hadron electron Collider, LHeC, is the means to move deep inelastic physics following HERA to the energy frontier of particle physics as it is being exploited by the HL-LHC. [...]
CERN-ACC-NOTE-2020-0002. - 2020. - 318 p.
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2020-01-10
17:30
Deliverable 2.10: Summary of the observations in the SPS and update of the estimates for HL-LHC / Alekou, Androula (University of Manchester (GB)) ; Antoniou, Fanouria (CERN) ; Appleby, Robert Barrie (University of Manchester (GB)) ; Bartosik, Hannes (CERN) ; Calaga, Rama (CERN) ; Carla', Michele (CERN) ; Carver, Lee Robert (University of Liverpool (GB)) ; Papaphilippou, Yannis (CERN) ; Welsch, Carsten Peter (University of Liverpool (GB))
Over the course of 2018, 7 machine developments were conducted for dedicated crab cavity measurements with each measurement slot consisting of 10 hours of SPS machine time. [...]
CERN-ACC-2020-0002. - 2020. - 22 p.
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2020-01-10
17:18
Deliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPS / Alekou, Androula (University of Manchester (GB)) ; Antoniou, Fanouria (CERN) ; Appleby, Robert Barrie (University of Manchester (GB)) ; Bartosik, Hannes (CERN) ; Calaga, Rama (CERN) ; Carla', Michele (CERN) ; Carver, Lee Robert (University of Liverpool (GB)) ; Papaphilippou, Yannis (CERN) ; Welsch, Carsten Peter (University of Liverpool (GB))
The Crab Cavities (CCs) may induce emittance growth, driven by phase and amplitude jitter, and lead to a degradation of the High Luminosity LHC (HL-LHC) beam. [...]
CERN-ACC-2020-0001. - 2020. - 18 p.
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2019-11-13
11:23
LHeC optics with β∗ = 10 cm and L∗ = 15 m / Cruz Alaniz, Emilia (University of Liverpool (GB)) ; Martin, Roman ; Tomas Garcia, Rogelio (CERN)
New proton optics have been designed for LHeC taking into account new final focus magnet designs and ensuring a full compatibility with HL-LHC version 1.3. [...]
CERN-ACC-NOTE-2019-0049. - 2019. - 17 p.
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2019-10-08
19:34
Beam-induced heat loads on the beam screens of the HL-LHC arcs / Skripka, Galina (Joint Institute for Nuclear Research (RU)) ; Iadarola, Giovanni (CERN)
The heat load on the beam screens of cold magnets and drift sections in the HL-LHC arcs is estimated considering power deposition from impedance, synchrotron radiation and electron cloud. [...]
CERN-ACC-NOTE-2019-0041. - 2019. - 25 p.
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2019-09-19
11:31
Studies of PACMAN effects in the HL-LHC / Ribes Metidieri, Ariadna (University of Barcelona (ES)) ; Buffat, Xavier (CERN)
This note summarises the status of the studies on PACMAN beam-beam effects in the HL-LHC project. [...]
CERN-ACC-NOTE-2019-0037. - 2019. - 34 p.
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2019-08-27
11:48
WEPLATE WP8 6DOF ALIGNMENT PLATFORM / Lino Diogo Dos Santos, Miguel (CERN) ; Evrard, Sebastien (CERN) ; Fuchs, Jean-Frederic (CERN) ; Labarthe-Vacquier, Julien (CERN) ; Sanchez Galan, Francisco (CERN) ; Vieille, Alban (CERN)
In the context of the LHC (Large Hadron Collider) upgrade at CERN (European Organization for Nuclear Research) known as HL-LHC (High Luminosity LHC) which will increase the LHC luminosity (rate of collisions) by a factor of five beyond the original design value and the integrated luminosity (total collisions created) by a factor ten, WP8 (Work Package 8) proposed a new alignment platform concept for the alignment of TANB (Target Absorber Neutrals) being installed in LS2 (Long Shutdown 2) at Point 8. [...]
CERN-ACC-NOTE-2019-0035. - 2019. - 23 p.
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2019-08-08
11:08
MD 4145: Study of Landau damping with an Antidamper / Antipov, Sergey (CERN) ; Albert, Markus (CERN) ; Amorim, David (U. Grenoble Alpes) ; Biancacci, Nicolo (CERN) ; Buffat, Xavier (CERN) ; Carideo, Emanuela (Sannio U.) ; Metral, Elias (CERN) ; Mounet, Nicolas (CERN) ; Oeftiger, Adrian (Darmstadt, GSI) ; Trad, Georges (CERN) et al.
Landau damping is an essential mechanism for ensuring the transverse beam stability in LHC and its upgrades. [...]
CERN-ACC-NOTE-2019-0034. - 2019. - 17 p.
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2019-08-02
16:40
Mode coupling instability of colliding beams in the HL-LHC / Barraud, Laurent (Johann-Wolfgang-Goethe Univ. (DE)) ; Buffat, Xavier (CERN)
The coupling between the coherent beam-beam modes and the head-tail modes can result in strong instabilities under the effect of electromagnetic wake fields [...]
CERN-ACC-NOTE-2019-0032. - 2019. - 19 p.
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2019-07-24
15:03
Design studies of a compact superconducting RF crab cavity for future colliders using Nb/Cu technology / Papke, Kai (Lancaster University (GB)) ; Amorim Carvalho, Alexandre (CERN) ; Zanoni, Carlo ; Grudiev, Alexej (CERN)
The design of a compact crab cavity using Nb/Cu technology is presented. [...]
CERN-ACC-NOTE-2019-0031. - 2019. - 14 p.

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