CERN Accelerating science

PS Complex

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Transverse beam splitting made operational: Recent progress of the multi-turn extraction at the CERN proton synchrotron / Huschauer, Alexander (CERN) ; Borburgh, Jan (CERN) ; Damjanovic, Sanja (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE)) ; Gilardoni, Simone (CERN) ; Giovannozzi, Massimo (CERN) ; Hourican, Michael (CERN) ; Kahle, Karsten (CERN) ; Michels, Olivier (CERN) ; Sterbini, Guido (CERN) ; Hernalsteens, Cedric et al.
Following a successful commissioning period, the Multi-Turn Extraction (MTE) at the CERN Proton Synchrotron (PS) has been applied for the fixed-target physics programme at the Super Proton Synchrotron (SPS) since September 2015. [...]
- 2016. - 7 p.
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Electron cloud in the CERN accelerator complex / Rumolo, Giovanni (CERN) ; Bartosik, Hannes (CERN) ; Belli, Eleonora (Universita e INFN, Roma I (IT)) ; Iadarola, Giovanni (CERN) ; Li, Kevin Shing Bruce (CERN) ; Mether, Lotta Maria (CERN) ; Romano, Annalisa (Technische Universitaet Darmstadt (DE)) ; Schenk, Michael (Ecole Polytechnique Federale de Lausanne (CH))
Operation with closely spaced bunched beams causes the build-up of an Electron Cloud (EC) in both the LHC and the two last synchrotrons of its injector chain (PS and SPS). [...]
- 2016. - 7 p.

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Resonant converter topology for the new ISOLDE/CERN modulator / Redondo, L M (Lisbon, ISEL ; Lisbon U.) ; Fernando Silva, J (Lisbon U.) ; Canacsinh, H (Lisbon, ISEL) ; Mendes, J P M (Lisbon, ISEL) ; Rodrigues, M A (Lisbon, ISEL) ; Fowler, T (CERN)
This paper describes a new resonant converter topology, using a solid-state asymmetric bridge to increase the energy efficiency of the solid-state switching circuit being designed to replace the actual pulse transformer and thyratron based resonant modulator that supplies the 60 kV target potential for the ion acceleration of the On-Line Isotope Mass Separator ISOLDE accelerator. The preliminary results of a 5 kV laboratory prototype validate this concept, however the design of all components, including a high-voltage coil, as well as, the selection of the semiconductors proven to be crucial in order to reduce the energy dissipation during the recovery process..
2014 - 4 p. - Published in : 10.1109/IPMHVC.2014.7287222
In : 2014 IEEE International Power Modulator and High Voltage Conference, Santa Fe, NM, USA, 1 - 5 Jun 201, pp.119-122

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Drive beam recombination optimization at CTF3 / Gamba, Davide (CERN ; Oxford U.)
The CLIC Test Facility (CTF3) installed at CERN has a scaled version of the CLIC design Drive-Beam Recombination Complex (DBRC). This complex is designed to recombine a long electron train into a shorter one but with increased bunch frequency and pulse current. [...]
2014 - 2 p. - Published in : 10.1109/BDO.2014.6890018
In : 20th International Workshop on Beam Dynamics and Optimization, Saint-Petersburg, Russia, 30 Jun - 4 Jul 2014, pp.6890018

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Required modifications of the ESS accelerator architecture for ESSnuSB / Gerigk, Frank (CERN) ; Montesinos, Eric (CERN)
This report is a summary of major modifications to the ESS nominal linac layout, which are needed to enable the operation of the ESS linac as 5 MW proton driver for the ESSnuSB initiative in addition to its regular operation as 5 MW ESS proton source [...]
- 2016.
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Sub-LET Threshold SEE Cross Section Dependency with Ion Energy / Garcia Alia, Ruben (CERN) ; Bahamonde Castro, Cristina (CERN) ; Brandenburg, Sytze (University of Groningen) ; Brugger, Markus (CERN) ; Daly, Eamonn (ESA) ; Ferlet-Cavrois, Veronique (ESA) ; Gaillard, Remi ; Hoeffgen, Stefan (Fraunhofer INT) ; Menicucci, Alessandra (Universita e INFN Roma Tor Vergata (IT)) ; Metzger, Stefan (Fraunhofer INT) et al.
This study focuses on the ion species and energy dependence of the heavy ion SEE cross section in the sub-let threshold region through a set of experimental data. [...]
- 2015. - 11 p.
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SEL Hardness Assurance in a Mixed Radiation Field / Garcia Alia, Ruben (CERN) ; Brugger, Markus (CERN) ; Danzeca, Salvatore (CERN) ; Ferlet-Cavrois, Veronique (Rutherford Appleton Laboratory) ; Frost, Christopher (Consultant in St Arnoult France) ; Gaillard, Remi ; Mekki, Julien (Centre Spatial de Toulouse (FR)) ; Saigné, Frédéric (Institut d'Electronique du Sud, Université de Montpellier) ; Thornton, Adam (University of Surrey (GB)) ; Uznanski, Slawosz (CERN) et al.
This paper explores the relationship between monoenergetic and mixed-field Single Event Latchup (SEL) cross sections, concluding for components with a very strong energy dependence and highly-energetic environments, test results from monoenergetic or soft mixed-field spectra can significantly underestimate the operational failure rate. [...]
- 2015. - 10 p.
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Performance of the CERN PSB at 160 MeV with $H^{-}$ charge exchange injection / Forte, Vincenzo
As part of the LHC Injectors Upgrade Project, the CERN PS Booster (PSB) will be upgraded with a H- charge exchange injection system and its injection energy will be raised from 50 MeV to 160 MeV to obtain the beam brightness required for the LHC High-Luminosity Upgrade [...]
CERN-THESIS-2016-063 - 192 p.

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Beam Dynamics Studies for High-Intensity Beams in the CERN Proton Synchrotron / Huschauer, Alexander
With the discovery of the Higgs boson, the existence of the last missing piece of the Standard Model of particle physics (SM) was confirmed [...]
CERN-THESIS-2016-061 - 178 p.

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Inductive adders for replacing thyratron based modulators at CERN / Barnes, M J (CERN) ; Ducimetiere, L (CERN) ; Holma, J (CERN) ; Kramer, T (CERN) ; Fowler, A (CERN)
Line-type modulators, for example pulse forming lines and pulse forming networks, which use thyratron switches, are currently used in many pulse power systems at CERN. Solid-state modulators implemented with inductive adder technology could replace thyratron based designs in many applications and potentially improve dynamic range, maintainability and reliability of the systems. [...]
2015 - 10 p. - Published in : 10.1109/EPE.2015.7309160
In : 17th European Conference on Power Electronics and Applications, Geneva, Switzerland, 8-10 Sep 2015, pp.7309160

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