1.
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First Experience with the LHC Beam Loss Monitoring System
/ Böhlen, T (CERN) ; Dehning, B (CERN) ; Effinger, E (CERN) ; Emery, J (CERN) ; Follin, F (CERN) ; Holzer, E (CERN) ; Jackson, S (CERN) ; Kramer, Daniel (CERN) ; Kruk, G (CERN) ; Le Roux, P (CERN) et al.
The LHC beam loss monitoring system (BLM) consists of about 4000 monitors observing losses at all quadrupole magnets and many other likely loss locations. At the first LHC operation in August and September 2008 all monitors were active and used to observe the losses during the initial beam steerings, at collimators, at the LHC dump and during aperture scans. [...]
CERN-ATS-2009-025.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TH5RFP034
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2.
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Generation of 1.5 Million Beam Loss Threshold Values
/ Holzer, E B (CERN) ; Bocian, D (CERN) ; Böhlen, T T (CERN) ; Dehning, B (CERN) ; Kramer, Daniel (CERN) ; Ponce, L (CERN) ; Priebe, A (CERN) ; Sapinski, M (CERN) ; Stockner, M (CERN)
CERN's Large Hadron Collider will store an unprecedented amount of energy in its circulating beams. Beamloss monitoring (BLM) is, therefore, critical for machine protection. [...]
LHC-PROJECT-Report-1158; CERN-LHC-PROJECT-Report-1158.-
Geneva : CERN, 2008 - 4 p.
Preprint: PDF; External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.THPC147
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3.
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Configuration and Validation of the LHC Beam Loss Monitoring System
/ Zamantzas, C (CERN) ; Dehning, B (CERN) ; Emery, J (CERN) ; Fitzek, J (CERN) ; Follin, F (CERN) ; Jackson, S (CERN) ; Kain, V (CERN) ; Kruk, G (CERN) ; Misiowiec, M (CERN) ; Roderick, C (CERN) et al.
The LHC Beam Loss Monitoring (BLM) system is one of the most complex instrumentation systems deployed in the LHC. [...]
CERN-BE-2009-022.
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2009. - 3 p.
preprint
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4.
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Is the BLM system ready to go to higher intensities?
/ Sapinski, M (CERN) ; Cerutti, F (CERN) ; Dehning, B (CERN) ; Effinger, E (CERN) ; Emery, J (CERN) ; Goddard, B (CERN) ; Guerrero, A (CERN) ; Grishin, S (CERN) ; Holzer, E (CERN) ; Jackson, S (CERN) et al.
The higher beam intensities will enhance the effects of the beam losses observed during 2010 run. In particular beam losses due to so called UFO events are discussed, but also other beam loss phenomena like luminosity losses, injection losses and the leakage from the collimation system are considered. [...]
2011
- Published in : 10.5170/CERN-2011-005.231
Published version from CERN: PDF; Slides: PDF;
In : Chamonix 2011 Workshop on LHC Performance, pp.231-236
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5.
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Overview of LHC Beam Loss Measurements
/ Dehning, B (CERN) ; Dabrowski, M (CERN) ; Effinger, E (CERN) ; Emery, J (CERN) ; Fadakis, E (CERN) ; Holzer, E B (CERN) ; Jackson, S (CERN) ; Kruk, G (CERN) ; Kurfuerst, C (CERN) ; Marsili, A (CERN) et al.
The LHC beam loss monitoring system provides measurements with an update rate of 1 Hz and high time resolution data by event triggering. These informations are used for the initiation of beam aborts, fixed displays and the off line analysis. [...]
CERN-ATS-2011-064.-
Geneva : CERN, 2011 - 3 p.
Fulltext: PDF; External link: Published version from JACoW
In : 2nd International Particle Accelerator Conference, San Sebastian, Spain, 4 - 9 Sep 2011, pp.THOAA03
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6.
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BLM thresholds: limiting locations
/ Nordt, A (CERN) ; Brugger, M (CERN) ; Calviani, M (CERN) ; Dabrowski, M (CERN) ; Dehning, B (CERN) ; Effinger, E (CERN) ; Emery, J (CERN) ; Fadakis, E (CERN) ; Grishin, V (CERN) ; Holzer, E B (CERN) et al.
2010
Fulltext: PDF; Slides: PDF; External link: Indico
In : 2nd Evian Workshop on LHC Beam Operation, Evian-les-bains, France, 7 - 9 Dec 2010, pp.179-189
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7.
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Commissioning and optimization of the LHC BLM System
/ Holzer, E B (CERN) ; Dehning, B (CERN) ; Effinger, E (CERN) ; Emery, J (CERN) ; Hajdu, C F (CERN) ; Jackson, S (CERN) ; Kurfurst, C (CERN) ; Marsili, A (CERN) ; Misiowiec, M (CERN) ; Nebot Del Busto, E (CERN) et al.
Due to rapid progress with the LHC commissioning in 2010, set-up beam intensities were soon surpassed and damage potential was reached. One of the key systems for machine protection is the beam loss monitoring (BLM) system. [...]
CERN-BE-2010-031.-
Geneva : CERN, 2011 - 5 p.
Fulltext: PDF;
In : 46th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Morschach, Switzerland, 27 Sep - 1 Oct 2010, pp.487 (WEO1C01)
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8.
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Beam Loss Monitoring for LHC Machine Protection
/ Holzer, Eva Barbara (CERN) ; Dehning, Bernd (CERN) ; Effnger, Ewald (CERN) ; Emery, Jonathan (CERN) ; Grishin, Viatcheslav (CERN) ; Hajdu, Csaba (CERN) ; Jackson, Stephen (CERN) ; Kurfuerst, Christoph (CERN) ; Marsili, Aurelien (CERN) ; Misiowiec, Marek (CERN) et al.
The energy stored in the nominal LHC beams is two times 362 MJ, 100 times the energy of the Tevatron. As little as 1 mJ/cm 3 deposited energy quenches a magnet at 7 TeV and 1 J/cm 3 causes magnet damage. [...]
2012 - 8 p.
- Published in : Phys. Procedia 37 (2012) 2055-2062
Elsevier Open Access article: PDF;
In : 2nd International Conference on Technology and Instrumentation in Particle Physics, Chicago, IL, USA, 9 - 14 Jun 2011, pp.2055-2062
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9.
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10.
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Beam-induced quench test of LHC main quadrupole
/ Priebe, A (CERN ; Ecole Polytechnique, Lausanne) ; Dahlerup-Petersen, K (CERN) ; Dehning, B (CERN) ; Effinger, E (CERN) ; Emery, J (CERN) ; Holzer, E B (CERN) ; Kurfuerst, C (CERN) ; Nebot Del Busto, E (CERN) ; Nordt, A (CERN) ; Sapinski, M (CERN) et al.
Unexpected beam loss might lead to a transition of the accelerator superconducting magnet to a normal conducting state. The LHC beam loss monitoring (BLM) system is designed to abort the beam before the energy deposited in the magnet coils reach a quench-provoking level. [...]
CERN-ATS-2011-058.-
Geneva : CERN, 2011 - 3 p.
Fulltext: PDF; External link: Published version from JACoW
In : 2nd International Particle Accelerator Conference, San Sebastian, Spain, 4 - 9 Sep 2011, pp.WEPC172
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