CERN Accelerating science

SPS and CNGS

Letzte Einträge:
2019-04-26
08:33
Compensation of Transient Beam Loading in Ramping Synchrotrons Using a Fixed Frequency Processing Clock / Galindo Guarch, Francisco Javier (Barcelona, Polytechnic U. ; CERN) ; Baudrenghien, Philippe (CERN) ; Moreno Arostegui, Juan Manuel (Barcelona, Polytechnic U.)
Transient beam loading compensation schemes, such as One-Turn-FeedBack (OTFB), require beam synchronous processing (BSP). Swept clocks derived from the RF, and therefore harmonic to the revolution frequency, are widely used in CERN synchrotrons; this simplifies implementation with energy ramping, where the revolution frequency changes. [...]
2018 - 4 p. - Published in : (2018) , pp. THPML121
- Published in : J. Phys. : Conf. Ser.: 1067 (2018) , no. 7, pp. 072033 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPML121

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2019-04-26
08:33
Optical Beam Loss Monitors Based on Fibres for the CLARA Phase 1 Beam-Line / Alexandrova, Alexandra (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Brynes, Alexander (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Devlin, Lee (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Effinger, Ewald (CERN) ; Holzer, Eva Barbara (CERN) ; Jackson, Frank (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Tzoganis, Vasilis (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
Fibre based Optical Beam Loss Monitors (oBLMs) are on-line devices used in-situ to measure losses along a beam-line. The technology is based on the detection of Cherenkov radiation, produced inside quartz fibres placed alongside the beampipe, from the interaction of secondary showers generated from losses hitting the vacuum pipe. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-THPML090 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPML090

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2019-04-26
08:32
The ESSnuSB Accumulator / Wildner, Elena (CERN)
The 2.0 GeV, 5 MW proton linac for the European Spallation Source, ESS, will have the capacity to send extra pulses to a neutrino target, giving an excellent opportunity to produce a high performance neutrino beam, the ESS neutrino Super Beam (ESSnuSB). The neutrino target focusing system needs pulses in the order of a few micro-seconds. [...]
SISSA, 2018 - 6 p. - Published in : PoS NuFact2017 (2018) 094 Fulltext: PDF; External link: PoS server
In : 19th International Workshop on Neutrinos from Accelerators, Uppsala, Sweden, 25 - 30 Sep 2017, pp.094

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2019-04-25
06:31
Eradication of Mercury Ignitron from the 400 kA Magnetic Horn Pulse Generator for CERN Antiproton Decelerator / Namora, Vasco (CERN) ; Calviani, Marco (CERN) ; Ducimetière, Laurent (CERN) ; Faure, Patrick (CERN) ; Fernandez, Luis (CERN) ; Grawer, Gregor (CERN) ; Senaj, Viliam (CERN)
The CERN Antiproton Decelerator (AD) produces low-energy antiprotons for studies of antimatter. A 26 GeV proton beam impacts the AD production target which produces secondary particles including antiprotons. [...]
2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMF086 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF086

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2019-04-25
06:31
Investigation and Estimation of the LHC Magnet Vibrations Induced by HL-LHC Civil Engineering Activities / Guinchard, Michael (CERN) ; Cabon, Morgane (CERN) ; Charrondière, Cedric (CERN) ; Develle, Kevin (CERN) ; Fessia, Paolo (CERN) ; Lacny, Lukasz (CERN ; Cracow Tech. U.) ; Osborne, John (CERN) ; Scislo, Lukasz (CERN ; Cracow Tech. U.) ; Wenninger, Jorg (CERN)
The HL-LHC project requires major underground civil engineering, with the excavation of large underground structures in order to host new equipment. The tunnels con-struction and other civil engineering works will therefore take place in parallel with the LHC operation. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMF080 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF080

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2019-04-25
06:31
First Prototype Inductive Adder for the FCC Injection / Woog, David (CERN) ; Barnes, Michael (CERN) ; Ferrero Colomo, Alvaro (CERN) ; Holma, Janne (CERN) ; Kramer, Thomas (CERN)
A highly reliable kicker system is required as part of theinjection for the FCC. A significant weak point of conven-tional kicker systems is often the pulse generator, wherea Pulse Forming Network/Line (PFN/PFL) is dischargedthrough a thyratron switch to generate the current pulse forthe kicker magnet. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMF076 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF076

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2019-04-25
06:31
Adaptation of the Cryogenic System Capacity for the LHC Dynamic Heat Load - Operational Experience / Brodzinski, Krzysztof (CERN) ; Bradu, Benjamin (CERN) ; Claudet, Serge (CERN) ; Delikaris, Dimitri (CERN) ; Delprat, Laurent (CERN) ; Ferlin, Gerard (CERN)
During second LHC physics operation period (Run2), between 2015 and 2018, the accelerator operation modes and beam parameters have been adapted thus allowing significantly improved integrated luminosity production. Increased energy, intensity and adapted beam operation schemes with 25 ns of inter-bunches spacing have an essential influence on the dynamic heat load generation with direct impact on the cryogenic cooling system. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMF073 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF073

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2019-04-24
06:12
Analysis and Operational Feedback of the New High-Energy Beam Dump in the CERN SPS / Perillo-Marcone, Antonio (CERN) ; Calviani, Marco (CERN) ; Illan Fiastre, Ricardo (CERN) ; Rios Rodriguez, Paula (CERN) ; Romagnoli, Giulia (CERN)
The CERN Super Proton Synchrotron (SPS) high-energy internal dump (TIDVG) is used to intercept beam dumps from 10².2 to 450 GeV. An inspection in 2013 revealed significant beam induced damage to the aluminium absorbing block, resulting in operational limitations to minimize the risk of reproducing this phenomenon. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMG003 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMG003

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2019-04-24
06:12
LHC Injectors Upgrade Project: Outlook of the Modifications to the Super Proton Synchrotron (SPS) Vacuum System and Impact on the Operation of the Carbon-Coated Vacuum Chambers / Pasquino, Chiara (CERN) ; Bregliozzi, Giuseppe (CERN) ; Chiggiato, Paolo (CERN) ; Cruikshank, Paul (CERN) ; Farricker, Aaron (CERN) ; Harrison, Anthony (CERN) ; Perez Espinos, Jaime (CERN) ; Somoza, Jose (CERN) ; Taborelli, Mauro (CERN) ; Vollinger, Christine (CERN) et al.
Aiming at doubling the beam intensity and reducing the beam emittance [1], significant modifications of the LHC injector chain will take place during Long Shutdown 2 (LS2), starting from 2019. The LIU project (LHC Injector Upgrade) [2], in the specific, touches Linac4, the Proton Synchrotron Booster (PSB), the Proton Synchrotron (PS), the Super Proton Synchrotron (SPS). [...]
2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMF087 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF087

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2019-04-23
14:00
An Overview of PyHEADTAIL / Oeftiger, Adrian (CERN)
The macro-particle tracking code PyHEADTAIL simulates collective beam dynamics [...]
CERN-ACC-NOTE-2019-0013.
- 2019. - 12 p.
Full text

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