2022-05-24 06:41 |
Design of a Very Low Energy Beamline for NA61/SHINE
/ Mussolini, Carlo Alberto (CERN ; JAI, UK) ; Burrows, Philip N (JAI, UK) ; Charitonidis, Nikolaos (CERN) ; Nagai, Yoshikazu (U. Colorado, Boulder) ; Zimmerman, Eric D (U. Colorado, Boulder)
A new, low-energy beamline branch is currently under consideration for the H₂ beamline at the CERN North Area. This new branch would extend the capabilities of the current infrastructure enabling the study of particles in the very low, 1-13 GeV/c, momentum range. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 4017-4020
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4017-4020
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2022-05-24 06:41 |
Detection and Classification of Collective Beam Behaviour in the LHC
/ Coyle, Loic (Ecole Polytechnique, Lausanne ; CERN) ; Blanc, Frederic (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Krymova, Ekaterina (Ecole Polytechnique, Lausanne ; Zurich, ETH) ; Obozinski, Guillaume (Ecole Polytechnique, Lausanne ; Zurich, ETH) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne ; CERN) ; Schenk, Michael (Ecole Polytechnique, Lausanne ; CERN) ; Solfaroli Camillocci, Matteo (CERN) ; Wenninger, Jorg (CERN)
Collective instabilities can lead to a severe deterioration of beam quality, in terms of reduced beam intensity and increased beam emittance, and consequently a reduction of the collider’s luminosity. It is therefore crucial for the operation of the CERN’s Large Hadron Collider to understand the conditions in which they appear in order to find appropriate mitigation measures. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 4318-4321
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4318-4321
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2022-05-24 06:41 |
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2022-05-21 06:07 |
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2022-05-21 06:07 |
The impact of H$_2$ and N$_2$ on the material properties and secondary electron yield of sputtered amorphous carbon films for anti-multipacting applications
/ Fernández, H Moreno (CERN) ; Himmerlich, M (CERN) ; Costa Pinto, P (CERN) ; Coroa, J (CERN) ; Sousa, D (Nova U., Lisboa) ; Baris, A (CERN) ; Taborelli, M (CERN)
Amorphous carbon thin films were prepared by direct current hollow cathode sputter deposition in Ar discharge
with the injection of small amounts of H$_2$ and/or N$_2$. The influence of these additives on the film properties with
particular focus on the application as a coating for electron cloud mitigation in particle accelerators is characterized by optical spectroscopy, X-ray photoelectron spectroscopy, and secondary electron yield (SEY) measurements. [...]
2021 - 10 p.
- Published in : Appl. Surf. Sci. 542 (2021) 148552
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2022-05-21 06:07 |
Recent BDSIM Related Developments and Modeling of Accelerators
/ Nevay, Laurence J (JAI, UK) ; Abramov, Andrey (CERN) ; Alden, Siobhan E (JAI, UK) ; Boogert, Stewart T (JAI, UK) ; D'Alessandro, Gian Luigi (JAI, UK) ; Gibson, Stephen M (JAI, UK) ; Gnacadja, Eustache (Brussels U.) ; Hernalsteens, Cédric (CERN) ; Lefebvre, Helena (JAI, UK) ; Liu, Shan L (DESY) et al.
Beam Delivery Simulation (BDSIM) is a program based on Geant4 that creates 3D radiation transport models of accelerators from a simple optical description in a vastly reduced time frame with great flexibility. It also uses ROOT and CLHEP to create a single simulation model that can accurately track all particle species in an accelerator to predict and understand beam losses, secondary radiation, dosimetric quantities and their origin. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 4208-4211
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4208-4211
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2022-05-21 06:07 |
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2022-05-16 17:11 |
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2022-05-14 01:01 |
Renovation of the Beam-Based Feedback Controller in the LHC
/ Grech, Leander (CERN) ; Alves, Diogo (CERN) ; Calia, Andrea (CERN) ; Hostettler, Michael (CERN) ; Jackson, Stephen (CERN) ; Valentino, Gianluca (U. Malta) ; Wenninger, Jorg (CERN)
This work presents an extensive overview of the design choices and implementation of the Beam-Based Feedback System (BBFS) used in operation until the LHC Run 2. The main limitations of the BBFS are listed and a new design called BFCLHC, which uses the CERN Front-End Software Architecture (FESA), framework is proposed. [...]
2022 - 6 p.
- Published in : JACoW ICALEPCS 2021 (2022) 671-676
Fulltext: PDF;
In : 18th International Conference on Accelerator and Large Experimental Physics Control Systems, Online, 18 - 22 Oct 2021, pp.671-676
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2022-05-14 01:01 |
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