CERN Accelerating science

All PS Complex

Darreres entrades:
2019-10-18
06:27
Emittance dilution from the CERN Proton Synchrotron Booster’s extraction kickers / Fraser, Matthew (CERN) ; Albright, Simon (CERN) ; Antoniou, Fanouria (CERN) ; Di Giovanni, Gian Piero (CERN) ; Dutheil, Yann (CERN) ; Forte, Vincenzo (CERN) ; Huschauer, Alexander (CERN) ; Roncarolo, Federico (CERN)
Understanding the different sources of emittance dilution along the LHC injector chain is an important part of providing the high brightness proton beams demanded by the LHC Injectors Upgrade (LIU) project. In this context, the first beam-based measurements of the magnetic waveforms of the Proton Synchrotron Booster’s (PSB) extraction kickers were carried out and used to quantify the transverse emittance blow-up during extraction and transfer to the Proton Synchrotron (PS). [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP026 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP026

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2019-10-18
06:27
Matching studies between CERN PSB and PS through multi-turn beam profile acquisitions / Fraser, Matthew (CERN) ; Dutheil, Yann (CERN) ; Forte, Vincenzo (CERN) ; Guerrero, Ana (CERN) ; Huschauer, Alexander (CERN) ; Oeftiger, Adrian (CERN) ; Ogur, Salim (CERN) ; Roncarolo, Federico (CERN) ; Senes, Eugenio (CERN) ; Tecker, Frank (CERN)
In the framework of the LHC Injectors Upgrade (LIU) project, the investigation and quantification of the optics mismatch between the CERN Proton Synchrotron Booster (PSB) and PS is a crucial step in understanding the source of horizontal emittance growth between the two machines. Extensive studies were carried out to estimate the mismatch from single-pass measurements in the transfer line and to rematch the transfer line to reduce the dispersive mismatch at PS injection while keeping the betatron matching unaltered. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP025 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP025

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2019-10-18
06:27
Frequency modulated capture of cooled coasting ion beams / Albright, Simon (CERN) ; Angoletta, Maria Elena (CERN)
Transverse space charge effects in the Low Energy Ion Ring (LEIR) at CERN have been shown to be a major source of particle losses, which can be mitigated with a larger RMS longitudinal emittance. However, due to electron cooling during the injection plateau, the longitudinal density is very high prior to RF capture. [...]
2019 - 3 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP021 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP021

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2019-10-17
06:46
The new injection region of the CERN PS Booster / Weterings, Wim (CERN) ; Bracco, Chiara (CERN) ; Jorat, Louise Olivia (CERN) ; Meddahi, Malika (CERN) ; Noulibos, Remy (CERN) ; Van Trappen, Pieter (CERN)
During the Long Shutdown 2 (LS2) at CERN, the new Linac4 (L4) accelerator will be connected to the PS Booster (PSB) to inject 160 MeV H$^−$ beam into the 4 superposed PSB rings. In order to achieve this, we have designed, built and pre-assembled a completely new H$^−$ charge-exchange injection chicane system, with a carbon stripping foil unit to convert the negative hydrogen ions into protons by stripping off the electrons. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP039 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP039

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2019-10-16
07:36
Emittance evolution of low energy antiproton beams in the presence of deceleration and cooling / Hunt, James (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Carli, Christian (CERN) ; Dupuy, Bruno (CERN) ; Gamba, Davide (CERN) ; Resta-López, Javier (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
The commissioning of the Extra Low Energy Antiproton (ELENA) [1] ring was completed before the start of the second long shutdown (LS2) at CERN. First beams to an experiment in a new experimental zone have also already been delivered. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPGW090 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW090

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2019-10-15
06:34
Space charge driven resonances in the CERN PS / Asvesta, Foteini (CERN ; Natl. Tech. U., Athens) ; Bartosik, Hannes (CERN) ; Huschauer, Alexander (CERN) ; Papaphilippou, Yannis (CERN)
In the CERN Proton Synchrotron space charge driven resonances are excited around the operational working point due to the periodicity of the optics functions. In this paper, the resonances are studied using analytical methods, i.e. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPTS047 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPTS047

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2019-10-15
06:34
Detailed characterisation of the LEIR intensity limitations for a Pb ion beam / Saá Hernández, Angela (CERN) ; Bartosik, Hannes (CERN) ; Biancacci, Nicolo (CERN) ; Hirlaender, Simon (CERN) ; Moreno, Daniel (CERN) ; Zampetakis, Michail (CERN)
The equilibrium emittance of the Pb beam in the CERN Low Energy Ion Ring (LEIR) results from the interplay of electron cooling and heating processes, as intra-beam scattering and space charge. In this paper we present the measurements of the emittance evolution as a function of intensity, working point and resonance excitation, and compare them with the simulations of the heating processes. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPTS042 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPTS042

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2019-10-15
06:34
Energy dependence of the reproducibility and injection efficiency of the LINAC3-LEIR complex / Hirlaender, Simon (CERN) ; Bartosik, Hannes (CERN) ; Bellodi, Giulia (CERN) ; Biancacci, Nicolo (CERN) ; Kain, Verena (CERN) ; Saá Hernández, Angela (CERN) ; Scrivens, Richard (CERN)
High intensities in the CERN Low Energy Ion Ring (LEIR) are achieved by stacking several multi-turn injections from the pre-accelerator LINAC3. Up to seven consecutive 200 μs long, 200 ms spaced pulses are injected from LINAC3 into LEIR. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPTS040 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPTS040

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2019-10-12
06:01
Coupling and space charge studies at the CERN PSB / Asvesta, Foteini (Natl. Tech. U., Athens ; CERN) ; Antoniou, Fanouria (CERN) ; Bartosik, Hannes (CERN) ; Di Giovanni, Gian Piero (CERN) ; Papaphilippou, Yannis (CERN)
In the nominal optics of the CERN PS-Booster (PSB), the fourth order coupling resonance is excited by space charge (Montague resonance [1]) due to the same integer tune values. This resonance can be avoided by changing the tunes to different integers. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPTS041 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPTS041

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2019-10-12
06:01
The new 1-18 MHz wideband RF system for the CERN PS Booster / Paoluzzi, Mauro (CERN) ; Arnaudon, Luca (CERN) ; Bretin, Vladimir (CERN) ; Cuvet, Yves (CERN) ; Daricou, Joel (CERN) ; Energico, Salvatore (CERN) ; Haase, Matthias (CERN) ; Jones, Anthony (CERN) ; Landré, David (CERN) ; Ohmori, Chihiro (J-PARC) et al.
The LHC Injectors Upgrade (LIU) project at CERN prepares the injectors to meet the requirements of the High Luminosity LHC. For protons, it includes the new Linac4, PS Booster (PSB), PS and SPS. [...]
2019 - 3 p. - Published in : 10.18429/JACoW-IPAC2019-WEPRB107 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPRB107

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