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CERN Document Server 2,047 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 0.38 sekunder. 
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LHC MD4044: Asynchronous Beam Dump Test with Bunched Beam at Flat Top / Wiesner, Christoph (CERN) ; Apollonio, Andrea (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Frankl, Matthias Immanuel ; Fraser, Matthew Alexander (CERN) ; Hessler, Christoph ; Lechner, Anton (CERN) ; Magnin, Nicolas (CERN) et al.
This note summarises the LHC Machine Development (MD) 4044, which studied the beam-loss and quench behaviour during asynchronous beam dumps at injection and at top energy using bunched beam in the abort gap. [...]
CERN-ACC-NOTE-2020-0009. - 2020. - 15 p.
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LHC MD2930: Asynchronous Beam Dump Test with Bunched Beam / Wiesner, Christoph (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Fraser, Matthew Alexander (CERN) ; Hessler, Christoph ; Lechner, Anton (CERN) ; Magnin, Nicolas (CERN) ; Renner, Elisabeth (Vienna University of Technology (AT)) ; Wollmann, Daniel (CERN) et al.
This note summarises the results of LHC Machine Development (MD) 2930, which studied the beam-loss behaviour during asynchronous beam dumps at 450 GeV and at 6.5 TeV using bunched beam in the abort gap. [...]
CERN-ACC-NOTE-2020-0008. - 2020. - 10 p.
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Asynchronous Beam Dump Tests at LHC / Wiesner, Christoph (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Ducimetière, Laurent (CERN) ; Frankl, Matthias (CERN) ; Fraser, Matthew (CERN) ; Goddard, Brennan (CERN) ; Heßler, Christoph (CERN) ; Kramer, Thomas (CERN) et al.
The detailed understanding of the beam-loss pattern in case of an asynchronous beam dump is essential for the safe operation of the future High Luminosity LHC (HL-LHC) with nearly twice the nominal LHC beam intensity, leading to correspondingly higher energy deposition on the protection elements. An asynchronous beam dump is provoked when the rise time of the extraction kickers is not synchronized to the 3 us long particle-free abort gap. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPMF063 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF063
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LHC MD 2401: Beam-Based Measurement of the MKD Rise Time / Wiesner, Christoph (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Fraser, Matthew Alexander (CERN) ; Hessler, Christoph ; Magnin, Nicolas (CERN) ; Renner, Elisabeth (Vienna University of Technology (AT))
This note summarises the beam-based measurements of the MKD rise time for both LHC beams performed during MD4 on December 2nd, 2017 and discusses the results [...]
CERN-ACC-NOTE-2020-0010. - 2018. - 6 p.
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LHC Full Energy Exploitation Study: Operation at 7 TeV / Bruning, Oliver (CERN) ; Garcia Alia, Ruben (CERN) ; Antoniou, Fanouria ; Apollonio, Andrea (CERN) ; Arduini, Gianluigi (CERN) ; Baglin, Vincent (CERN) ; Bartmann, Wolfgang (CERN) ; Bednarek, Mateusz Jakub (CERN) ; Bracco, Chiara (CERN) ; Bregliozzi, Giuseppe (CERN) et al.
This is the first report of a three volume study on the full energy exploitation of the LHC. [...]
CERN-ACC-2017-0086. - 2017. - 51 p.
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Energy Deposition Studies and Analysis of the Quench Behavior in the Case of Asynchronous Dumps During 6.5 TeV LHC Proton Beam Operation / Frankl, Matthias (CERN) ; Bartmann, Wolfgang (CERN) ; Bednarek, Mateusz (CERN) ; Bracco, Chiara (CERN) ; Lechner, Anton (CERN) ; Verweij, Arjan (CERN) ; Wiesner, Christoph (CERN) ; Wollmann, Daniel (CERN)
The CERN LHC beam dumping system comprises a series of septa and fast-pulsed kicker magnets for extracting the stored proton beams to the external beam dumps. Different absorbers in the extraction region protect superconducting magnets and other machine elements in case of abnormal beam aborts, where bunches are swept across the machine aperture. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-TUPAF028 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPAF028
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Consolidation of Re-Triggering System of LHC Beam Dumping System at CERN / Magnin, Nicolas (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Gräwer, Gregor (CERN) ; Mottram, Timothy (CERN) ; Renner, Elisabeth (CERN) ; Rodziewicz, Janusz (CERN) ; Senaj, Viliam (CERN) ; Wiesner, Christoph (CERN)
The Trigger Synchronization and Distribution System (TSDS) is a core part of the LHC Beam Dump System (LBDS). It comprises redundant Re-Trigger Lines (RTLs) that allow fast re-triggering of all high-voltage pulsed generators in case one self-triggers, resulting in a so-called asynchronous dump. [...]
2020 - 5 p. - Published in : 10.18429/JACoW-ICALEPCS2019-MOPHA088 Fulltext: PDF;
In : 17th Biennial International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS), New York, United States, 5 - 11 Oct 2019, pp.MOPHA088
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LHC MD 2186: New Method to Measure Margins between IP6 Absorbers and TCTs/Triplets / Wiesner, Christoph (CERN) ; Bruce, Roderik (CERN) ; Molson, James (CERN) ; Schaumann, Michaela (CERN) ; Staufenbiel, Christian ; Valette, Matthieu ; Wollmann, Daniel (CERN)
During the LHC Machine Development (MD) 2186, performed on October 28th 2018, a new method to measure the Beam 2 aperture margins between the absorbers located in IR6 and the tertiary collimators (TCTs) in IR5 was tested. [...]
CERN-ACC-NOTE-2019-0056. - 2019. - 15 p.
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LHC Full Energy Exploitation Study: Operation at Ultimate Energy of 7.5 TeV / Bruning, Oliver (CERN) ; Antipov, Sergey (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Arduini, Gianluigi (CERN) ; Apollonio, Andrea (CERN) ; Ball, Austin (CERN) ; Baglin, Vincent (CERN) ; Bartmann, Wolfgang (CERN) ; Battistin, Michele (CERN) ; Biancacci, Nicolo (CERN) et al.
This report discusses the feasibility and limitations for operating the LHC and HL-LHC at the ultimate beam energy of 7.5 TeV, corresponding to a main dipole magnetic field of 8.93 T and an operating current of 12748 A..
CERN-ACC-2019-0015. - 2019. - 57 p.
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LHC Beam Dump Performance in View of the High Luminosity Upgrade / Wiesner, Christoph (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Ducimetière, Laurent (CERN) ; Frankl, Matthias (CERN) ; Fraser, Matthew (CERN) ; Goddard, Brennan (CERN) ; Kramer, Thomas (CERN) ; Lechner, Anton (CERN) et al.
The High Luminosity Large Hadron Collider (HL-LHC) project will increase the total beam intensity in the LHC by nearly a factor of two. Analysis and follow-up of recent operational issues as well as dedicated studies of the LHC Beam Dump System (LBDS) have been carried out to ensure the safe operation with HL-LHC parameters and to decide on possible hardware upgrades to meet the HL-LHC requirements. [...]
CERN-ACC-2017-159.- 2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-WEPIK033 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.WEPIK033
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