CERN Accelerating science

All CERN Accelerators documents

Letzte Einträge:
2020-02-28
09:05
Extension of Signal Monitoring Applications with Machine Learning / Obermair, Christoph (Graz University of Technology (AT))
The Large Hardron Colider (LHC) is the world’s largest particle accelerator. It is 27-km long and contains a wide range of superconducting circuits for controlling the shape and trajectory of particles. [...]
CERN-THESIS-2020-010.- Graz : Obermair Christoph , 2020-02-28 - 81 p. Fulltext: PDF; External link: Approve this document (restricted)

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2020-02-27
23:33
Exact Solutions of Indirect Transverse Field Effects in Elongated Structures with Applications to CERN LHC and PS / Hirlander, Simon (University of Malta (MT))
The understanding of the electromagnetic interaction of the particle beam with the surrounding elements - so-called indirect space charge driven (ISCD) effects - in particle accelerators, is crucial for stable high-intensity performance. It is addressed and applied at the CERN accelerator complex. [...]
CERN-THESIS-2020-009.- Fulltext: PDF; External link: Approve this document (restricted)

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2020-02-27
06:16
SixTrack V and runtime environment / De Maria, R (CERN) ; Andersson, J (CERN) ; Berglyd Olsen, V K (CERN) ; Field, L (CERN) ; Giovannozzi, M (CERN) ; Hermes, P D (CERN) ; Høimyr, N (CERN) ; Kostoglou, S (CERN) ; Iadarola, G (CERN) ; Mcintosh, E (CERN) et al.
SixTrack is a single-particle tracking code for high-energy circular accelerators routinely used at CERN for the Large Hadron Collider (LHC), its luminosity upgrade (HL-LHC), the Future Circular Collider (FCC) and the Super Proton Synchrotron (SPS) simulations. The code is based on a 6D symplectic tracking engine, which is optimized for long-term tracking simulations and delivers fully reproducible results on several platforms. [...]
2020 - 17 p. - Published in : Int. J. Mod. Phys. A 34 (2020) 1942035

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2020-02-27
06:16
Simulation studies of the beam cooling process in presence of heating effects in the Extra Low ENergy Antiproton ring (ELENA) / Resta-López, J (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Hunt, J R (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Karamyshev, O (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Welsch, C P (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.)
The Extra Low ENergy Antiproton ring (ELENA) is a small synchrotron equipped with an electron cooler, which is currently being constructed at CERN to further decelerate antiprotons from the Antiproton Decelerator (AD) from 5.3 MeV to energies as low as 100 keV. At such low energies it is very important to carefully take contributions from electron cooling and beam heating mechanisms (e.g. [...]
IOP, IOP, 2015 - 24 p. - Published in : JINST 10 (2015) P05012
- Published in : JINST 10 (2015) E08001

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2020-02-26
17:55
Socio - economic impact at CERN: Social networks and onsite CERN visitors / Crespo Garrido, Irene del Rosario (University Rey Juan Carlos)
Several important discoveries and developments have been made thanks to the CERN’s scientific research activities, such as for instance:  The World Wide Web was developed by Tim Berners-Lee at CERN in 1989. The Web was originally designed to be a system for physicists around the world to share information remotely. [...]
CERN-THESIS-2020-008.- 50 p. Fulltext: PDF; External link: Approve this document (restricted)

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2020-02-26
07:41
Noninvasive bunch length measurements exploiting Cherenkov diffraction radiation / Curcio, A (CERN) ; Bergamaschi, M (CERN) ; Corsini, R (CERN) ; Farabolini, W (CERN) ; Gamba, D (CERN) ; Garolfi, L (CERN) ; Kieffer, R (CERN) ; Lefevre, T (CERN) ; Mazzoni, S (CERN) ; Fedorov, K (JAI, UK ; Tomsk Polytechnic U.) et al.
We present the observation and the detailed investigation of coherent Cherenkov diffraction radiation (CChDR) in terms of spectral-angular characteristics. Electromagnetic simulations have been performed to optimize the design of a prismatic dielectric radiator and the performance of a detection system with the aim of providing longitudinal beam diagnostics. [...]
2020 - 13 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 022802 Fulltext: PDF;

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2020-02-26
07:41
Optics interlock system for the CERN LHC: Implementation and operational experience / Schaumann, M (CERN) ; Calia, A (CERN) ; Fuchsberger, K (CERN) ; Galilée, M A (CERN) ; Hemelsoet, G H (CERN) ; Hostettler, M (CERN) ; Jacquet, D (CERN) ; Makai, J (CERN) ; Wenninger, J (CERN)
In 2016 the luminosity reach of the Large Hadron Collider (LHC) was increased by reducing the β-function in the main collision points below the design value to β*=40  cm. This was possible thanks to a specially matched betatron phase advance between the extraction kickers and some sensitive machine elements that would otherwise risk to be damaged by miskicked beam in case of an asynchronous beam dump. [...]
2020 - 12 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 022801 Fulltext: PDF;

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2020-02-25
06:57
Lead evaporation instabilities and failure mechanisms of the micro oven at the GTS-LHC ECR ion source at CERN / Kövener, T (CERN ; U. Hamburg (main)) ; Küchler, D (CERN) ; Toivanen, V A (Jyvaskyla U.)
The GTS-LHC ECR ion source (named after the Grenoble Test Source and the Large Hadron Collider) at CERN provides heavy ion beams for the chain of accelerators from Linac3 up to the LHC for high energy collision experiments and to the Super Proton Synchrotron for fixed target experiments. During the standard operation, the oven technique is used to evaporate lead into the source plasma to produce multiple charged lead ion beams. [...]
2020 - 5 p. - Published in : Rev. Sci. Instrum. 91 (2020) 013320

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2020-02-25
06:56
Experimental Characterization of an Overdense Plasma in a Compact ion Source / Castro, Giuseppe (INFN, LNS) ; Mascali, David (INFN, LNS) ; Romano, Francesco Paolo (INFN, LNS) ; Altana, Carmen (INFN, LNS) ; Caliri, Claudia (INFN, LNS) ; Celona, Luigi (INFN, LNS) ; Giugno, Rossella Di (INFN, LNS) ; Gambino, Nadia (INFN, Catania) ; Lanaia, Davide (CERN) ; Miracoli, Rosalba (ESS Bilbao) et al.
Electron Cyclotron Resonance Ion Sources (ECRIS) are compact plasma-based machines able to feed particle accelerators with high intensity beams of multi-charged ions. ECRIS plasmas are density-limited, since they are sustained by E.M. [...]
Czech Technical University in Prague, 2015 - 4 p. - Published in : Acta Polytech. 55 (2015) 146-149 Fulltext: PDF;

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2020-02-25
06:56
High energy muon induced radioactive nuclides in nickel plate and its use for 2-D muon-beam image profile / Kurebayashi, Y (Yamagata U.) ; Sakurai, H (Yamagata U.) ; Takahashi, Y (Yamagata U.) ; Doshita, N (Yamagata U.) ; Kikuchi, S (Yamagata U.) ; Tokanai, F (Yamagata U.) ; Horiuchi, K (Hirosaki U.) ; Tajima, Y (Yamagata U.) ; Oe, T (Yamagata U.) ; Sato, T (Yamagata U.) et al.
Target materials were exposed to a muon beam with an energy of 160 GeV/c at the COMPASS experiment line in CERN-SPS to measure the production cross-sections for muon-induced radionuclides. A muon imager containing four nickel plates, each measuring 100 mm×100 mm, exposed to the IP plate successfully detected the muon beam image during an irradiation period of 33 days. [...]
ScienceDirect, 2015 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 799 (2015) 54-58

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