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Protection of extraction septa during asynchronous beam dumps in HL-LHC operation
/ Farina, E (CERN) ; Atanasov, M (CERN) ; Borburgh, J (CERN) ; Bracco, C (CERN) ; Dutheil, Y (CERN) ; Lechner, A (CERN) ; Maestre, J (CERN) ; Muñoz, P Andreu (CERN) ; Nuiry, F X (CERN) ; Schwarz, P (CERN) et al.
The LHC beam dump system was developed to safely and reliably dispose of the LHC beams at the end of physics fills or in case of emergency aborts. The beams are extracted by means of kicker magnets, deflecting the beams horizontally, and septa, which provide a vertical kick. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPA100
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA100
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2.
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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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3.
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Conceptual Design of the LHC Beam Dumping Protection Elements TCDS and TCDQ
/ Goddard, B ; Riffaud, R ; Sans-Merce, M ; Weterings, W
The Beam Dumping System for the Large Hadron Collider, presently under construction at CERN, consists, per ring, of a set of horizontally deflecting extraction kicker magnets, vertically deflecting steel septa, dilution kickers and finally, a couple of hundred metres further downstream, an absorber block. A fixed diluter (TCDS) will protect the septa in the event of a beam dump that is not synchronised with the particle free gap or a spontaneous firing of the extraction kickers which will cause the beam to sweep over the septum. [...]
LHC-Project-Report-756; CERN-LHC-Project-Report-756.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.629
- Please contact the library if you need to access this document.
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4.
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5.
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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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6.
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Feasibility Study of Monitoring the Population of the CERN-LHC Abort Gap with Diamond Based Particle Detectors
/ Stein, Oliver (CERN ; Hamburg U.) ; Burkart, Florian (CERN) ; Dehning, Bernd (CERN) ; Schmidt, Ruediger (CERN) ; Sørensen, Christian (CERN) ; Wollmann, Daniel (CERN)
At the end of a physics fill and in case of a failure, the LHC beams must be extracted and transferred through a 750m long line to the beam dump block. During the rise of the extraction kickers to their full strength a particle-free abort gap, with a length of 3 us in the LHC filling pattern, is required to prevent beam losses that could lead to substantial quenching of magnets, with a risk of damage. [...]
CERN-ACC-2015-306.-
2015 - 4 p.
- Published in : (2015) , pp. MOPTY057
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.MOPTY057
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8.
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Chapter 19: Injection and Beam Dump Systems
/ Bracco, C (CERN) ; Barnes, M J (CERN) ; Bartmann, W (CERN) ; Calviani, M (CERN) ; Perez, D Carbajo (CERN) ; Carlier, E (CERN) ; Ducimetiere, L (CERN) ; Frankl, M I (CERN) ; Goddard, B (CERN) ; Jowett, J (CERN) et al.
Some of the elements of the LHC injection and extraction systems will be upgraded or replaced to adapt to the increased beam brightness and intensity of the HL-LHC beams [1; 2]. The injection main protection absorber will be replaced with new hardware which will be able to absorb and withstand 288 HL-LHC bunches in case of an injection kicker failure. [...]
2024 - 17 p.
- Published in : Adv. Ser. Direct. High Energy Phys. 31 (2024) 427-443
Fulltext: PDF;
In : The High Luminosity Large Hadron Collider, pp.427-443
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9.
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Upgrade of the LHC Beam Dumping Protection Elements
/ Weterings, W (CERN) ; Antonakakis, T (CERN) ; Balhan, B (CERN) ; Borburgh, J (CERN) ; Goddard, B (CERN) ; Maglioni, C (CERN) ; Versaci, R (CERN)
The Beam Dumping System for the Large Hadron Collider comprises for each ring a set of horizontally deflecting extraction kicker magnets, vertically deflecting steel septa, dilution kickers and finally, a couple of hundred meters further downstream, an absorber block. A mobile diluter (TCDQ) protects the superconducting quadrupole immediately downstream of the extraction as well as the arc at injection energy and the triplet aperture at top energy from bunches with small impact parameters, in case of a beam dump that is not synchronized with the particle free gap or a spontaneous firing of the extraction kickers. [...]
CERN-ATS-2012-213.-
Geneva : CERN, 2012 - 4 p.
- Published in : Conf. Proc.: C1205201 (2012) , pp. MOPPD081
Fulltext: PDF; External link: Published version from JaCoW
In : 3rd International Particle Accelerator Conference, New Orleans, LA, USA, 20 - 25 May 2012, pp.556
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Energy deposition challenges for the HL-LHC beam dump
/ Farina, E (CERN) ; Banks, T G (CERN) ; Bracco, C (CERN) ; Calviani, M (CERN) ; Dutheil, Y (CERN) ; Lechner, A (CERN) ; Solieri, N (CERN)
The LHC beam dump system has the task of safely and reliably disposing of the extracted beams from 450 GeV to 7 TeV. The present dump assembly consists of a multi-segment graphite core, which is contained in a duplex stainless steel vessel with titanium windows. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPA101
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA101
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