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Performance and Moli`ere radius measurements using a compact prototype of LumiCal in an electron test beam
/ Abramowicz, H. (Tel Aviv U.) ; Abusleme, A. (Chile U., Catolica) ; Afanaciev, K. (Minsk, High Energy Phys. Ctr.) ; Benhammou, Y. (Tel Aviv U.) ; Borysov, O. (Tel Aviv U.) ; Borysova, M. (Tel Aviv U.) ; Bozovic-Jelisavcic, I. (VINCA Inst. Nucl. Sci., Belgrade) ; Daniluk, W. (Cracow, INP) ; Dannheim, D. (CERN) ; Demichev, M. (Dubna, JINR) et al.
A new design of a detector plane of sub-millimetre thickness for an electromagnetic sampling calorimeter is presented. It is intended to be used in the luminometers LumiCal and BeamCal in future linear $e^+e^-$ collider experiments. [...]
arXiv:1812.11426.-
2019-07-10 - 16 p.
- Published in : Eur. Phys. J. C 79 (2019) 579
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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3.
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Effect of ions on sulfuric acid-water binary particle formation: 1. Theory for kinetic- and nucleation-type particle formation and atmospheric implications
/ Merikanto, Joonas (Helsinki Inst. of Phys. ; Finnish Meteorological Inst.) ; Duplissy, Jonathan (Helsinki U. ; Helsinki Inst. of Phys.) ; Määttänen, Anni (Versailles U., Velizy ; LATMOS, Guyancourt ; Paris U., IV) ; Henschel, Henning (Helsinki U.) ; Donahue, Neil M (Carnegie Mellon U.) ; Brus, David (Finnish Meteorological Inst.) ; Schobesberger, Siegfried (Helsinki Inst. of Phys.) ; Kulmala, Markku (Helsinki U.) ; Vehkamäki, Hanna (Helsinki Inst. of Phys.)
We derive a version of Classical Nucleation Theory normalized by quantum chemical results on sulfuric acid-water hydration to describe neutral and ion-induced particle formation in the binary sulfuric acid-water system. The theory is extended to treat the kinetic regime where the nucleation free energy barrier vanishes at high sulfuric acid concentrations or low temperatures. [...]
2016 - 16 p.
- Published in : J. Geophys. Res. 121 (2016) 1736-1751
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Effect of ions on sulfuric acid-water binary particle formation: 2. Experimental data and comparison with QC-normalized classical nucleation theory
/ Duplissy, J. ; Merikanto, J. ; Franchin, A. ; Tsagkogeorgas, G. ; Kangasluoma, J. ; Wimmer, D. ; Vuollekoski, H. ; Schobesberger, S. ; Lehtipalo, K. ; Flagan, R. C. et al.
We report comprehensive, demonstrably contaminant‐free measurements of binary particle formation rates by sulfuric acid and water for neutral and ion‐induced pathways conducted in the European Organization for Nuclear Research Cosmics Leaving Outdoor Droplets chamber. The recently developed Atmospheric Pressure interface‐time of flight‐mass spectrometer was used to detect contaminants in charged clusters and to identify runs free of any contaminants. [...]
2015-09-04 - 24 p.
- Published in : J. Geophys. Res. Atmos. 121 (2016) 1752-1775
External link: Fulltext
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Measurements of the performance of a beam condition monitor prototype in a 5 GeV electron beam
/ Hempel, M (Brandenburg Tech. U. ; DESY, Zeuthen) ; Afanaciev, K (Minsk, NCPHEP) ; Burtowy, P (CERN) ; Dabrowski, A (CERN) ; Henschel, H (DESY, Zeuthen) ; Idzik, M (AGH-UST, Cracow) ; Karacheban, O (Brandenburg Tech. U.) ; Lange, W (DESY, Zeuthen) ; Leonard, J (DESY, Zeuthen) ; Levy, I (Tel Aviv U. (main)) et al.
The Fast Beam Conditions Monitor, BCM1F, in the Compact Muon Solenoid, CMS, experiment was operated since 2008 and delivered invaluable information on the machine induced background in the inner part of the CMS detector supporting a safe operation of the inner tracker and high quality data. Due to the shortening of the time between two bunch crossings from 50 ns to 25 ns and higher expected luminosity at the Large Hadron Collider, LHC, in 2015, BCM1F needed an upgrade to higher bandwidth. [...]
2016 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 826 (2016) 65-71
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New Fast Beam Conditions Monitoring (BCM1F) system for CMS
/ for the CMS Collaboration
The CMS Beam Radiation Instrumentation and Luminosity (BRIL) project is composed of several systems providing the experiment protection from adverse beam conditions while also measuring the online luminosity and beam background. Although the readout bandwidth of the Fast Beam Conditions Monitoring system (BCM1F - one of the faster monitoring systems of the CMS BRIL), was sufficient for the initial LHC conditions, the foreseen enhancement of the beams parameters after the LHC Long Shutdown-1 (LS1) imposed the upgrade of the system. [...]
CMS-CR-2015-295.-
Geneva : CERN, 2016 - 11 p.
- Published in : JINST 11 (2016) C01088
Fulltext: PDF; IOP Open Access article: PDF;
In : Topical Workshop on Electronics for Particle Physics, Lisbon, Portugal, 28 Sep - 2 Oct 2015, pp.C01088
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8.
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The CMS Beam Conditions and Radiation Monitoring System
/ Castro, E (DESY ; DESY, Zeuthen) ; Bacchetta, N (CERN) ; Bell, A J (CERN ; Geneva U.) ; Dabrowski, A (CERN) ; Guthoff, M (CERN ; Karlsruhe, Inst. Technol.) ; Hall-Wilton, R (CERN ; ESS, Lund) ; Hempel, M (DESY ; DESY, Zeuthen ; Brandenburg Tech. U.) ; Henschel, H (DESY ; DESY, Zeuthen) ; Lange, W (DESY ; DESY, Zeuthen) ; Lohmann, W (DESY ; DESY, Zeuthen) et al.
The Compact Muon Solenoid (CMS) is one of the two large, general purpose experiments situated at the LHC at CERN. As with all high energy physics experiments, knowledge of the beam conditions and luminosity is of vital importance..
2012 - 9 p.
- Published in : Phys. Procedia 37 (2012) 2097-2105
Elsevier Open Access article: PDF;
In : 2nd International Conference on Technology and Instrumentation in Particle Physics, Chicago, IL, USA, 9 - 14 Jun 2011, pp.2097-2105
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9.
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The fast beam condition monitor BCM1F backend electronics upgraded MicroTCA based architecture
/ Zagozdzinska, Agnieszka A (Warsaw U. of Tech.) ; Bell, Alan (DESY) ; Dabrowski, Anne E (CERN) ; Guthoff, Moritz (CERN) ; Hempel, Maria (DESY) ; Henschel, Hans (DESY) ; Karacheban, Olena (DESY) ; Lange, Wolfgang (DESY) ; Lohmann, Wolfgang (DESY) ; Lokhovitskiy, Arkady (Canterbury U.) et al.
2014 - 8 p.
- Published in : Proc. SPIE 9290 (2014) 92902L
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Upgraded Fast Beam Conditions Monitor for CMS online luminosity measurement
/ Leonard, Jessica Lynn (Hasylab, DESY) ; Bell, Alan (Canterbury U.) ; Hempel, Maria (DESY) ; Henschel, Hans (DESY) ; Karacheban, Olena (DESY) ; Lange, Wolfgang (DESY) ; Lohmann, Wolfgang (DESY) ; Novgorodova, Olga (DESY, Zeuthen) ; Penno, Marek (DESY) ; Walsh, Roberval (DESY) et al.
The CMS beam condition monitoring subsystem BCM1F during LHC Run I consisted of 8 individual diamond sensors situated around the beam pipe within the tracker detector volume, for the purpose of fast monitoring of beam background and collision products. Effort is ongoing to develop the use of BCM1F as an online bunch-by-bunch luminosity monitor [...]
SISSA, 2014
- Published in : PoS TIPP2014 (2014) 346
Fulltext: PDF; External link: Published version from PoS
In : International Conference on Technology and Instrumentation in Particle Physics 2014, Amsterdam, Netherlands, 2 - 6 Jun 2014, pp.346
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