CERN Accelerating science

CERN Published Articles

Letzte Einträge:
2019-10-23
06:56
Measurement of rf voltage in long traveling wave accelerating structures with application to the CERN Super Proton Synchrotron / Kramer, Patrick (RWTH Aachen U. ; CERN) ; Vollinger, Christine (CERN)
Since its inauguration in 1976, the Super Proton Synchrotron (SPS) at CERN relies on a traveling wave system for particle acceleration instead of making use of standing wave cavities that are more common in circular accelerators. These traveling wave structures (TWSs) are essentially periodically loaded waveguides operated at a fundamental frequency of about 200 MHz. [...]
2019 - 11 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 101002 Fulltext from publisher: PDF;

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2019-10-23
06:55
Resonant slow extraction with constant optics for improved separatrix control at the extraction septum / Kain, V (CERN) ; Velotti, F M (CERN) ; Fraser, M A (CERN) ; Goddard, B (CERN) ; Prieto, J (CERN) ; Stoel, L S (CERN) ; Pari, M (INFN, Padua)
Losses and component activation are limiting performance factors for slow extraction with high-power applications, and new techniques of loss-reduction, such as bent crystals, require a stable and narrow separatrix angular spread. Conventional tune-sweep slow extraction results in an optics change and an accompanying separatrix rotation through the spill. [...]
2019 - 8 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 101001 Fulltext from Publisher: PDF;

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2019-10-23
06:55
Preface: Invited Papers from the 17th Annual International Conference on Ion Sources / Lettry, Jacques (CERN) ; Mahner, Edgar (CERN) ; Marsh, Bruce A (CERN) ; Scrivens, Richard (CERN)
The 17th International Conference on Ion Sources was hosted by CERN, the European Organization for Nuclear Research, and took place in October 2017 at Geneva’s International Conference Centre. The event covered the physics and technology of all types of ion sources for all applications..
2018 - Published in : Rev. Sci. Instrum. 89 (2018) 051901
In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.051901

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2019-10-23
06:55
Collimation of heavy-ion beams in the HE-LHC / Abramov, Andrey (JAI, UK ; CERN ; Royal Holloway, U. of London) ; Bruce, Roderik (CERN) ; Crouch, Matthew (CERN) ; Fuster-Martínez, Nuria (CERN) ; Mereghetti, Alessio (CERN) ; Molson, James (CERN) ; Nevay, Laurence (JAI, UK ; Royal Holloway, U. of London ; CERN) ; Redaelli, Stefano (CERN)
A design study for a future collider to be built in the LHC tunnel, the High-Energy Large Hadron Collider (HE-LHC), has been launched as part of the Future Circular Collider (FCC) study at CERN. It would provide proton collisions at a centre-of-mass energy of 27 TeV as well as collisions of heavy ions at the equivalent magnetic rigidity. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPRB059 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB059

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2019-10-23
06:55
Collimation of partially stripped ion beams in the LHC / Abramov, Andrey (JAI, UK ; Royal Holloway, U. of London ; CERN) ; Bruce, Roderik (CERN) ; Fuster-Martínez, Nuria (CERN) ; Gorzawski, Arkadiusz (CERN ; U. Malta) ; Krasny, Mieczyslaw (CERN) ; Molson, James (CERN) ; Nevay, Laurence (JAI, UK ; Royal Holloway, U. of London ; CERN) ; Redaelli, Stefano (CERN) ; Schaumann, Michaela (CERN)
In the scope of the Physics Beyond Colliders studies, the Gamma Factory initiative proposes the use of partially stripped ions as a driver of a new type, high intensity photon source in CERN’s Large Hadron Collider (LHC). In 2018, the LHC accelerated and stored partially stripped $^{208}$Pb$^{81+}$ ions for the first time. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPRB058 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB058

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2019-10-23
06:55
First partially stripped ions in the LHC ($^{208}$Pb$^{81+}$) / Schaumann, Michaela (CERN) ; Alemany-Fernández, Reyes (CERN) ; Bartosik, Hannes (CERN) ; Bohl, Thomas (CERN) ; Bruce, Roderik (CERN) ; Hemelsoet, Georges-Henry (CERN) ; Hirlaender, Simon (CERN) ; Jowett, John (CERN) ; Kain, Verena (CERN) ; Krasny, Mieczyslaw (CERN) et al.
The Gamma Factory initiative proposes to use partially stripped ion (PSI) beams as drivers of a new type of high intensity photon source. As part of the ongoing Physics Beyond Collider studies, initial beam tests with PSI beams have been executed at CERN. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPRB055 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB055

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2019-10-23
06:55
Gamma Factory at CERN: Design of a proof-of-principle experiment / Dutheil, Yann (CERN) ; Alden, Siobhan (JAI, UK ; Royal Holloway, U. of London) ; Alemany-Fernández, Reyes (CERN) ; Apyan, Armen (Yerevan Phys. Inst.) ; Bartosik, Hannes (CERN) ; Bessonov, Evgeny (LPI, Moscow (main)) ; Biancacci, Nicolo (CERN) ; Bosco, Alessio (Royal Holloway, U. of London ; JAI, UK) ; Bruce, Roderik (CERN) ; Castelli, Fabrizio (INFN, Milan) et al.
The Gamma Factory (GF) initiative proposes to create novel research tools at CERN by producing, accelerating and storing highly relativistic partially stripped ion beams in the LHC rings and by exciting their atomic degrees of freedom by lasers, to produce high-energy photon beams. Their intensity would be several orders of magnitude higher than those of the presently operating light sources in the particularly interesting gamma-ray energy domain reaching up to 400 MeV. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPRB052 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB052

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2019-10-23
06:55
Collimation system upgrades for the High Luminosity Large Hadron Collider and expected cleaning performance in Run 3 / Mereghetti, Alessio (CERN) ; Bruce, Roderik (CERN) ; Fuster-Martínez, Nuria (CERN) ; Mirarchi, Daniele (CERN ; U. Manchester (main)) ; Redaelli, Stefano (CERN)
In the framework of the High-Luminosity Large Hadron Collider project (HL-LHC), the LHC collimation system needs important upgrades to cope with the foreseen brighter beams. New collimation hardware will be installed in two phases, the first one during the LHC second Long Shutdown (LS2), in 2019-20, followed by a second phase starting in 2024 (LS3). [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPRB051 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB051

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2019-10-23
06:55
Performance of the collimation system during the 2018 lead ion run at the Large Hadron Collider / Fuster-Martínez, Nuria (CERN) ; Bruce, Roderik (CERN) ; Jowett, John (CERN) ; Mereghetti, Alessio (CERN) ; Mirarchi, Daniele (CERN) ; Redaelli, Stefano (CERN)
As part of the Large Hadron Collider (LHC) heavy-ion research programme, the last month of the 2018 LHC run was dedicated to Pb ion physics. Several heavy-ion runs have been performed since the start-up of the LHC. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPRB050 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB050

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2019-10-23
06:55
Collimation system studies for the FCC-hh / Bruce, Roderik (CERN) ; Abramov, Andrey (JAI, UK ; CERN) ; Bertarelli, Alessandro (CERN) ; Besana, Maria Ilaria (CERN) ; Carra, Federico (CERN) ; Cerutti, Francesco (CERN) ; Faus-Golfe, Angeles (Orsay, LAL) ; Fiascaris, Maria (CERN) ; Gobbi, Giorgia (CERN) ; Krainer, Alexander (CERN) et al.
The Future Circular Collider (FCC-hh) is being designed as a 100 km ring that should collide 50 TeV proton beams. At 8.3 GJ, its stored beam energy will be a factor 28 higher than what has been achieved in the Large Hadron Collider, which has the highest stored beam energy among the colliders built so far. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPRB048 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB048

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