CERN Accelerating science

Accelerator Physics

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2017-03-17
15:27
Linear coupling dependence on intensity and a next step towards a feedback (MD1850) / Persson, Tobias Hakan Bjorn (CERN) ; Baud, Guillaume (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya (ES)) ; Gasior, Marek (CERN) ; Giovannozzi, Massimo (CERN) ; Olexa, Jakub (CERN) ; Tomas Garcia, Rogelio (CERN) ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) ; Valuch, Daniel (CERN)
Transverse coupling has proven to be an important variable to control beam dynamics and performance in the LHC. [...]
CERN-ACC-2017-0008.
- 2017. - 11 p.
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2017-03-01
09:52
Studies of Longitudinal Coupled-Bunch Instabilities in the LHC Injectors Chain / Ventura, Letizia
Among several challenging objectives of the LHC Injectors Upgrade project, one aim is to double the beam intensity of the CERN Proton Synchrotron (PS) in order to achieve the integrated luminosity target of the High-Luminosity LHC project [...]
CERN-THESIS-2017-009 -

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2017-02-24
06:20
High dynamic range diamond detector acquisition system for beam wire scanner applications / Sirvent, J L (CERN ; Barcelona U.) ; Dehning, B (CERN) ; Piselli, E (CERN) ; Emery, J (CERN) ; Dieguez, A (Barcelona U.)
The CERN Beam Instrumentation group has been working during the last years on the beam wire scanners upgrade to cope up with the increasing requirements of CERN experiments. These devices are used to measure the beam profile by crossing a thin wire through a circulating beam, the resulting secondary particles produced from beam/wire interaction are detected and correlated with the wire position to reconstruct the beam profile. [...]
2016 - 11 p. - Published in : J. Instrum. 11 (2016) C03008 IOP Open Access article: PDF;
In : Topical Workshop on Electronics for Particle Physics, Lisbon, Portugal, 28 Sep - 2 Oct 2015, pp.C03008

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2017-02-23
08:53
MD1228: Validation of Single Bunch Stability Threshold & MD1751: Instability Studies with a Single Beam / Carver, Lee Robert (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Biancacci, Nicolo (CERN) ; Buffat, Xavier (CERN) ; Iadarola, Giovanni (CERN) ; Lasocha, Kacper (Jagiellonian University (PL)) ; Li, Kevin Shing Bruce (CERN) ; Levens, Tom (University of Glasgow (GB)) ; Metral, Elias (CERN) ; Salvant, Benoit (CERN) et al.
Instabilities were being routinely observed in B1V during ADJUST. [...]
CERN-ACC-NOTE-2017-0013.
- 2017. - 13 p.
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2017-02-22
14:04
MD1831: Single Bunch Instabilities with Q" and Non-Linear Corrections / Carver, Lee Robert (CERN) ; Schenk, Michael (Ecole Polytechnique Federale de Lausanne (CH)) ; De Maria, Riccardo (CERN) ; Li, Kevin Shing Bruce (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Biancacci, Nicolo (CERN) ; Buffat, Xavier (CERN) ; Maclean, Ewen Hamish (CERN) ; Metral, Elias (CERN) ; Lasocha, Kacper (Jagiellonian University (PL)) et al.
During MD1751, it was observed that both a full single beam and 964 non-colliding bunches in Beam 1 (B1) and Beam 2 (B2) were both stable at the End of Squeeze (EOS) for 0A in the Landau Octupoles. [...]
CERN-ACC-NOTE-2017-0012.
- 2017. - 18 p.
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2017-02-22
13:41
LHC MD 1988: Automatic coupling correction test / Fol, Elena (University of Applied Sciences (DE)) ; Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya) ; Persson, Tobias Hakan Bjorn (CERN) ; Tomas Garcia, Rogelio (CERN)
This paper reports on the tests of new software development for automatic coupling correction and automatic model generation for data acquisition extending functionality of the Multiturn application..
CERN-ACC-NOTE-2017-0010.
- 2017. - 5 p.
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2017-02-15
09:50
Coupled-bunch instabilities due to fundamental cavity impedance / Mastoridis, Themistoklis (California Polytechnic State Univ. (US)) ; Baudrenghien, Philippe (CERN) ; Chapochnikova, Elena (CERN) ; Esteban Muller, Juan (CERN) ; Molendijk, John (CERN) ; Timko, Helga (CERN)
The purpose of this MD was to estimate the stability threshold due to longitudinal coupled-bunch instabilities (CBIs) driven by the RF cavities' fundamental impedance. [...]
CERN-ACC-NOTE-2017-0009.
- 2017.
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2017-02-15
09:42
Hadron collective effects studies for the LHC and FCC-hh project / Amorim, David
High intensity particle beams circulating in accelerators can be perturbed by the electromagnetic field created by the beam itself and the interaction with the surrounding environment [...]
CERN-THESIS-2016-258 - 39 p.

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2017-02-09
06:53
Impedance-Induced Beam Instabilities and Damping Mechanisms in Circular Machines – Longitudinal - Simulations / Migliorati, M (U. Rome La Sapienza (main) ; INFN, Rome) ; Quartullo, D (U. Rome La Sapienza (main) ; CERN)
2016 - 10 p. - Published in : ICFA Beam Dyn. Newsl.: 69 (2016) , pp. 132-141 Fulltext: Newsletter69Migliorati - PDF; ICFA69_132-141 - PDF; External link: Fulltext

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2017-01-30
16:33
Elastic scattering and cluster-transfer reactions of 98Rb on 7Li at REX-ISOLDE / Bouma, Jake
Exotic nuclei are nuclei with unusual proton to neutron ratios that exist far away from stability [...]
CERN-THESIS-2013-436 -

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