# CERN Published Articles

2015-01-28
07:43
 Measurement of heavy-flavour production as a function of multiplicity in pp and p-Pb collisions with ALICE / Russo, Riccardo (Turin U. ; INFN, Turin) /for the ALICE Collaboration In these proceedings results are presented from the measurement of open heavy-flavour production as a function of charged-particle multiplicity in pp collisions at $\sqrt {s}$ = 7 TeV and p-Pb collisions at $\sqrt {s_{\rm NN}}$=5.02 TeV recorded with the ALICE detector in 2010 and 2013, respectively. $\rm D^{0}$, $\rm D^{+}$ and $\rm D^{*+}$ mesons are reconstructed from their hadronic decay channels in the central rapidity region, and their production yields are measured in various multiplicity and $p_{\rm T}$ intervals. [...] arXiv:1501.06425.- 2015 - 5 p. - Published in : Nucl. Phys., A 931 (2014) 552-557 External link: Preprint

2015-01-27
15:23
 Ion Colliders / Fischer, W (Brookhaven National Laboratory, Upton, New York 11973, USA.) ; Jowett, J M (CERN, CH-1211 Geneva 23, Switzerland.) High-energy ion colliders are large research tools in nuclear physics to study the Quark-Gluon-Plasma (QGP). The range of collision energy and high luminosity are important design and operational considerations. [...] CERN-ACC-2015-0015.- Geneva : CERN, 2015 Fulltext: PDF;

2015-01-21
10:35
 Multi-bunch Feedback Systems / Lonza, M (Sincrotrone Trieste) ; Schmickler, H (Sincrotrone Trieste) Coupled-bunch instabilities excited by the interaction of the particle beam with its surroundings can seriously limit the performance of circular particle accelerators. These instabilities can be cured by the use of active feedback systems based on sensors capable of detecting the unwanted beam motion and actuators that apply the feedback correction to the beam. [...] Geneva : CERN, 2014 Published version from CERN: PDF; In : CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18 - 29 Aug 2013, pp.503

2015-01-21
10:35
 Medical Applications / Biscari, C (CELLS - ALBA, LLS) ; Falbo, L (CNAO, Pavia) The use of a ccelerators for medical applications has evolved from initial experimentation to turn-key devices commonly operating in hospitals. New applications are continuously being developed around the world, and the hadrontherapy facilities of the newest generation are placed at the frontier between industrial production and advanced R&D.; An introduction to the different medical application accelerators is followed by a description of the hadrontherapy facilities, with special emphasis on CNAO, and the report closes with a brief outlook on the future of this field.. Geneva : CERN, 2014 Published version from CERN: PDF; In : CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18 - 29 Aug 2013, pp.487

2015-01-21
10:35
 High-Field Accelerator Magnets / de Rijk, G (CERN) In this lecture an overview is given of the present technology for high field accelerator magnets. We indicate how to get high fields and what are the most important parameters. [...] Geneva : CERN, 2014 Published version from CERN: PDF; In : CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18 - 29 Aug 2013, pp.461

2015-01-21
10:35
 Beam-Beam Effects / Herr, W (CERN) ; Pieloni, T (CERN) One of the most severe limitations in high-intensity particle colliders is the beam-beam interaction, i.e. the perturbation of the beams as they cross the opposing beams. [...] Geneva : CERN, 2014 Published version from CERN: PDF; In : CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18 - 29 Aug 2013, pp.431

2015-01-21
10:35
 RF Cavity Design / Jensen, E (CERN) After a short overview of a general approach to cavity design, we sketch the derivation of waveguide modes from plane waves and of cavity fields from waveguide modes. The characteristic parameters describing cavities and their performance are defined and explained. [...] Geneva : CERN, 2014 Published version from CERN: PDF; In : CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18 - 29 Aug 2013, pp.405

2015-01-21
10:35
 Introduction to Landau Damping / Herr, W (CERN) The mechanism of Landau damping is observed in various systems from plasma oscillations to accelerators. Despite its widespread use, some confusion has been created, partly because of the different mechanisms producing the damping but also due to the mathematical subtleties treating the effects. [...] Geneva : CERN, 2014 Published version from CERN: PDF; In : CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18 - 29 Aug 2013, pp.377

2015-01-21
10:35
 Wakefields and Instabilities in Linear Accelerators / Ferrario, M (Frascati ; U. Rome La Sapienza (main)) ; Migliorati, M (Frascati ; U. Rome La Sapienza (main)) ; Palumbo, L (Frascati ; U. Rome La Sapienza (main)) When a charged particle travels across the vacuum chamber of an accelerator, it induces electromagnetic fields, which are left mainly behind the generating particle. These electromagnetic fields act back on the beam and influence its motion. [...] Geneva : CERN, 2014 Published version from CERN: PDF; In : CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18 - 29 Aug 2013, pp.357

2015-01-21
10:35
 Space Charge Effects / Ferrario, M (Frascati ; U. Rome La Sapienza (main)) ; Migliorati, M (Frascati ; U. Rome La Sapienza (main)) ; Palumbo, L (Frascati ; U. Rome La Sapienza (main)) The space charge forces are those generated directly by the charge distribution, with the inclusion of the image charges and currents due to the interaction of the beam with a perfectly conducting smooth pipe. Space charge forces are responsible for several unwanted phenomena related to beam dynamics, such as energy loss, shift of the synchronous phase and frequency , shift of the betatron frequencies, and instabilities. [...] Geneva : CERN, 2014 Published version from CERN: PDF; In : CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18 - 29 Aug 2013, pp.331