CERN Accelerating science

Projects, Upgrade and Consolidation Projects

Nyeste elementer:
Effect of Crab cavity HOMs on the coupled-bunch stability of HL-LHC / Antipov, Sergey (CERN) ; Biancacci, Nicolo (CERN) ; Komppula, Jani Paavo Olavi ; Metral, Elias (CERN) ; Salvant, Benoit (CERN) ; Burov, Alexey (Fermi National Accelerator Lab. (US))
High frequency High Order Modes can significantly affect the coupled-bunch stability in a circular accelerator. [...]
- 2019.

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The High-Luminosity Large Hadron Collider / Bruning, Oliver (CERN) ; Rossi, Lucio (CERN)
Oliver Brüning and Lucio Rossi discuss an upgrade of the Large Hadron Collider (LHC), the High-Luminosity LHC (HL-LHC), which aims to significantly increase the luminosity..
- 2019. - 3 p.
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Crab Cavity RF Noise Feedback and Transverse Damper Interaction / Baudrenghien, Philippe (CERN) ; Mastoridis, Themistoklis (California Polytechnic State Univ. (US)) ; Miller, Benjamin Nicholas
Crab cavities are an important component of the LHC upgrade, and will contribute strongly to achieving an increase in the number of recorded collisions [...]
- 2019. - 7 p.
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Update of 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)
Since the publication of the document providing the specifications of the new circuits of the HL-LHC (see CERN-ACC-2017-0101), using criteria based on beam dynamics considerations, more accurate performance expectations of the power converter technology have been made available. [...]
- 2019.

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LHC Full Energy Exploitation Study: Operation at Ultimate Energy of 7.5 TeV / Bruning, Oliver (CERN) ; Antipov, Sergey (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Arduini, Gianluigi (CERN) ; Apollonio, Andrea (CERN) ; Ball, Austin (CERN) ; Baglin, Vincent (CERN) ; Bartmann, Wolfgang (CERN) ; Battistin, Michele (CERN) ; Biancacci, Nicolo (CERN) et al.
This report discusses the feasibility and limitations for operating the LHC and HL-LHC at the ultimate beam energy of 7.5 TeV, corresponding to a main dipole magnetic field of 8.93 T and an operating current of 12748 A..
- 2019. - 57 p.

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Staged implementation of low-impedance collimation in IR7: plans for LS2 / Redaelli, Stefano (CERN) ; Antipov, Sergey (CERN) ; Biancacci, Nicolo (CERN) ; Bertarelli, Alessandro (CERN) ; Bruce, Roderik (CERN) ; Carra, Federico (CERN) ; Gobbi, Giorgia (CERN) ; Lechner, Anton (CERN) ; Mereghetti, Alessio (CERN) ; Metral, Elias (CERN)
The HL-LHC upgrade baseline foresees to replace all secondary collimators of IR7 until LS3 in order to ensure a sufficient margin for beam stability with the high-brightness upgraded beams [...]
- 2019. - 30 p.
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Magnetic Frequency Response of High-Luminosity Large Hadron Collider Beam Screens / Morrone, Marco (CERN, Imperial College London) ; Martino, Michele (CERN) ; De Maria, Riccardo (CERN) ; Fitterer, Miriam (FNAL) ; Garion, Cedric (CERN)
Magnetic fields used to control particle beams in accelerators are usually controlled by regulating the electrical current of the power converters. [...]
- 2019. - 22 p.
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High Energy Hadrons Fluence Measurements in the LHC during 2015, 2016 and 2017 Proton Physics Operations. / Martinella, Corinna (University of Jyvaskyla (FI))
In order to reduce the risk of failure for the electronic equipment installed in the underground areas of LHC, every year the Radiation Monitors (RadMons) are used to measure the High Energy Hadrons (HEH) fluence in the tunnel and in the shielded areas. [...]
- 2018. - 47 p.
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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 [...]
- 2018. - 14 p.

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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). [...]
- 2018. - 18 p.
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