CERN Accelerating science

CERN Published Articles

Ultimi arrivi:
2019-01-22
07:37
Experimental ion mobility measurements in Ar-N2 / Santos, M A G ; Cortez, A F V ; Perdigoto, J M C ; Escada, J ; Veenhof, R (CERN) ; Neves, P N B ; Santos, F P ; Conde, C A N ; Borges, F I G M
Data on ion mobility is important to improve the performance of large volume gaseous detectors, since the detector signal can be influenced by the drift of the ions, namely in the cases where charge multiplication is used, for example in Multi-Wire Proportional Chambers (MWPCs) and in some Time Projection Chambers (TPCs). In the present work the results for the ion mobility measurements in Ar-N2 mixtures are presented, using an experimental setup and method already tested in previous work. [...]
2018 - Published in : JINST 13 (2018) P11016 Fulltext: PDF; Fulltext from Publisher: PDF;

Record dettagliato - Record simili
2019-01-22
07:37
Very high energy calibration of silicon Timepix detectors / George, S P ; Kroupa, M ; Wheeler, S ; Kodaira, S ; Kitamura, H ; Tlustos, L (CERN) ; Campbell-Ricketts, T ; Stoffle, N N ; Semones, E ; Pinsky, L
We investigate energy measurements in Timepix hybrid detectors in hole collection mode above pixel input energy depositions of about 2.2 MeV or 600,000 electron/hole pairs in Silicon. Measurement of the detector response well above this regime is important for our application measuring the heavy ion exposure of NASA astronauts. [...]
2018 - Published in : JINST 13 (2018) P11014 Fulltext: PDF; Fulltext from Publisher: PDF;

Record dettagliato - Record simili
2019-01-22
07:37
H4DAQ: a modern and versatile data-acquisition package for calorimeter prototypes test-beams / Marini, Andrea Carlo (MIT, Cambridge, CTP) /CMS
The upgrade of the particle detectors for the HL-LHC or for future colliders requires an extensive program of tests to qualify different detector prototypes with dedicated test beams. A common data-acquisition system, H4DAQ, was developed for the H4 test beam line at the North Area of the CERN SPS in 2014 and it has since been adopted in various applications for the CMS experiment and AIDA project. [...]
2018 - Published in : JINST 13 (2018) C02042
In : Calorimetry for High Energy Frontier, Lyon, France, 2 - 6 Oct 2017, pp.C02042

Record dettagliato - Record simili
2019-01-22
04:06
Software-based data acquisition and processing for neutron detectors at European Spallation Source—early experience from four detector designs / Christensen, M.J. ; Jebali, R. Al ; Blum, T. ; Hall-Wilton, R. ; Khaplanov, A. ; Lupberger, M. ; Messi, F. ; Mukai, A. ; Nilsson, J. ; Pfeiffer, D. (CERN) et al.
European Spallation Source (ESS) will deliver neutrons at high flux for use in diverse neutron scattering techniques. The neutron source facility and the scientific instruments will be located in Lund, and the Data Management and Software Centre (DMSC), in Copenhagen. [...]
arXiv:1807.03980.- 2018-11-20 - 26 p. - Published in : JINST 13 (2018) T11002 Fulltext: PDF; Fulltext from Publisher: PDF;

Record dettagliato - Record simili
2019-01-18
08:14
Highlights from the Compact Muon Solenoid (CMS) Experiment / Ghosh, Saranya Samik /CMS Collaboration
The highlights of the recent activities and physics results leading up to the summer of 2018 from the Compact Muon Solenoid (CMS) experiment at the CERN Large Hadron Collider (LHC) are presented here. The CMS experiment has a very wide-ranging physics program, and only a very limited subset of the physics analyses being performed at CMS are discussed here, consisting of several important results from the analysis of proton-proton collision data at center-of-mass energy of 13 TeV. [...]
arXiv:1901.05340.- 2019-01-16 - Published in : Universe 5 (2019) 28 Fulltext: PDF;

Record dettagliato - Record simili
2019-01-16
06:31
802 MHz ERL Cavity Design and Development / Marhauser, F (Jefferson Lab) ; Castagnola, S (Jefferson Lab) ; Clemens, W A (Jefferson Lab) ; Dail, J G (Jefferson Lab) ; Dhakal, P (Jefferson Lab) ; Fors, F (Jefferson Lab) ; Henry, J (Jefferson Lab) ; Rimmer, R A (Jefferson Lab) ; Turlington, L (Jefferson Lab) ; Williams, R S (Jefferson Lab) et al.
In the framework of a collaboration between CERN and JLab, an SRF accelerating cavity for energy recovery linacs operating at 802 MHz was developed in the context of the CERN's Large Hadron electron Collider (LHeC) design study. A single-cell and a five-cell cavity from fine grain high RRR niobium were built at JLab to validate the basic RF design in vertical tests. [...]
CERN-ACC-2019-013.- 2018 - Published in : 10.18429/JACoW-IPAC2018-THPAL146 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAL146

Record dettagliato - Record simili
2019-01-15
06:22
Dynamic Testing and Characterization of Advanced Materials in a New Experiment at CERN HiRadMat Facility / Bertarelli, Alessandro (CERN) ; Accettura, Carlotta (CERN ; Milan Polytechnic) ; Berthomé, Emmanuel (CERN) ; Bianchi, Laura (CERN) ; Bolz, Philipp (Darmstadt, GSI) ; Carra, Federico (CERN) ; Fichera, Claudio (CERN) ; Frankl, Matthias (CERN) ; Furness, Thomas (Huddersfield U.) ; Gobbi, Giorgia (CERN) et al.
An innovative and comprehensive experiment (named “Multimat”) was successfully carried out at CERN HiRadMat facility on 18 different materials relevant for Collimators and Beam Intercepting Devices. Material samples, tested under high intensity proton pulses of 440 GeV/c, exceeding the energy density expected in HL-LHC, ranged from very light carbon foams to tungsten heavy alloys, including novel composites as graphite/carbides and metal/diamond without and with thin-film coatings. [...]
CERN-ACC-2018-064.- 2018 - 8 p. - Published in : (2018) , pp. WEPMF071
- Published in : J. Phys. : Conf. Ser.: 1067 (2018) , no. 8, pp. 082021 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF071

Record dettagliato - Record simili
2019-01-15
06:22
Electron Cloud Build Up for LHC Sawtooth Vacuum Chamber / Guillermo Cantón, Gerardo (CERN ; CINVESTAV, IPN) ; Maury Cuna, Georfrey (Guanajuato U.) ; Ocampo, Edgar (Guanajuato U.) ; Zimmermann, Frank (CERN)
At high proton-beam energies, beam-induced synchrotron radiation is an important source of heating, of beam-related vacuum pressure increase, and of primary photoelectrons, which can give rise to an electron cloud. For the arcs of LHC a sawtooth pattern had been imprinted on the horizontally outward side  of the vacuum chamber in order to locally absorb synchrotron radiation photons without dispersing them all around the chamber. [...]
CERN-ACC-2018-065.- 2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-TUPAF030 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPAF030

Record dettagliato - Record simili
2019-01-15
06:22
Observation of Fast Losses in the LHC Operation in 2017 / Gorzawski, Arkadiusz (CERN ; Manchester U.) ; Appleby, Robert (Cockcroft Inst. Accel. Sci. Tech. ; U. Manchester (main)) ; Fuster-Martínez, Nuria (CERN) ; Garcia Morales, Hector (CERN) ; Redaelli, Stefano (CERN) ; Xu, Chen (CERN) ; Zamantzas, Christos (CERN)
Four diamond detectors that provide beam loss measurements with time resolution in the nanosecond range were added in the vicinity of the primary collimators of the Large Hadron Collider (LHC). This is a powerful diagnostic tool that provides the unique chance to measure bunch-by-bunch losses. [...]
CERN-ACC-2018-066.- 2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-TUPAF029 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPAF029

Record dettagliato - Record simili
2019-01-15
06:22
Special Collimation System Configuration for the LHC High-Beta Runs / Garcia Morales, Hector (Royal Holloway, U. of London) ; Bruce, Roderik (CERN) ; Burkhardt, Helmut (CERN) ; Deile, Mario (CERN) ; Jakobsen, Sune (CERN) ; Mereghetti, Alessio (CERN) ; Redaelli, Stefano (CERN)
Special LHC high-beta optics is required for the forward physics program of TOTEM and ATLAS-ALFA. In this configuration, the beam is de-squeezed (the \beta-function at the collision point is increased) in order to minimize the divergence for measurements at very small scattering angles. [...]
CERN-ACC-2018-067.- 2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPML012 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPML012

Record dettagliato - Record simili