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CERN Document Server 2,038 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 1.05 sekunder. 
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Shrinking of bumps by drawing scintillating fibres through a hot conical tool / Rodrigues Cavalcante, Ana Barbara (CBPF - Brazilian Center for Physics Research (BR)) ; Garnier, Francois (CERN) ; Gavardi, Laura (Technische Universitaet Dortmund (DE)) ; Joram, Christian (CERN) ; Kristic, Robert (CERN) ; Pierschel, Gerhard (Rheinisch-Westfaelische Tech. Hoch. (DE)) ; Schneider, Thomas (CERN)
The LHCb SciFi tracker will be based on scintillating fibres with a nominal diameter of 250 $\mu$m. A small length fraction of these fibres shows millimetre-scale fluctuations of the diameter, also known as bumps and necks. [...]
LHCb-PUB-2016-010; CERN-LHCb-PUB-2016-010.- Geneva : CERN, 2016 - 12. Fulltext: PDF;
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Quality of scintillating fibres after hot bump shrinking / Rodrigues Cavalcante, Ana Barbara (CBPF - Brazilian Center for Physics Research (BR)) ; Gavardi, Laura (Technische Universitaet Dortmund (DE)) ; Joram, Christian (CERN)
Shrinking the diameter of fibre bumps by a hot drawing tool requires to run the fibre through the hot tool over its full length, bearing the risk of a degradation of the fibre performance. In this study we demonstrated that the hot bump shrinking method has no visible effect on the optical attenuation length, the light yield following ionising radiation, the diameter, the mechanical stability and the integrity of the cladding. [...]
LHCb-PUB-2016-009; CERN-LHCb-PUB-2016-009.- Geneva : CERN, 2016 Fulltext: PDF;
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A setup to perform X-ray irradiation tests on scintillating fibres for the SciFi project / Gavardi, Laura (Technische Universitaet Dortmund (DE)) ; Rodrigues Cavalcante, Ana Barbara (CBPF - Brazilian Center for Physics Research (BR)) ; Joram, Christian (CERN) ; Kristic, Robert (CERN)
An X-ray setup has been installed at CERN. The setup will serve for quality assurance purposes related to the acceptance of $11'000~ \text{km}$ of scintillating plastic fibres for the SciFi detector of LHCb. [...]
LHCb-PUB-2017-008; CERN-LHCb-PUB-2017-008.- Geneva : CERN, 2017 Fulltext: PDF;
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Scanners for the quality contol of scintillating plastic fibres / Rodigues, Ana Barbara (Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil) ; Ekelhof, Robert (Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany) ; Garnier, Francois (CERN) ; Giudici, Pierre-Ange (CERN) ; Greim, Roman (I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany) ; Hebler, Philip (Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany) ; Joram, Christian (CERN) ; Kirn, Thomas (I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany) ; Pierschel, Gerhard (I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany) ; Schateikis, Tobias (I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany) et al.
The use of scintillating plastic fibres in the SciFi tracker requires rigorous quality control. The fibre diameter and in particular local variations in form of bumps and necks have an impact on the regularity of the winding pattern and hence the spatial resolution. [...]
LHCb-PUB-2015-009; CERN-LHCb-PUB-2015-009.- Geneva : CERN, 2015 - 23. Fulltext: PDF;
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SciFi - A large Scintillating Fibre Tracker for LHCb / Greim, Roman (Rheinisch-Westfaelische Tech. Hoch. (DE))
LHCb-TALK-2016-343.- Geneva : CERN, 2016 - 14. Fulltext: PDF;
In : 14th Topical Seminar on Innovative Particle and Radiation Detectors , Siena, Italy, 3 - 6 Oct 2016
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Irradiation of a 2.5 m long SciFi module with 24 GeV/c protons to the dose profile expected in LHCb / Rodrigues Cavalcante, Ana Barbara (CBPF - Brazilian Center for Physics Research (BR)) ; Gavardi, Laura (Technische Universitaet Dortmund (DE)) ; Glaser, Maurice (CERN) ; Joram, Christian (CERN) ; Karacson, Matthias (CERN) ; Kristic, Robert (CERN) ; Ravotti, Federico (CERN) ; Riggaz, Nicolas (CERN)
A 2.5 m long and 13 cm wide SciFi module, made of a 6-layer single fibre mat, was irradiated with 24 GeV/c protons in the new CERN PS IRRAD facility. The module is equipped with an aluminised mylar mirror and was previously carefully characterised in a test beam experiment in the CERN H8 zone. [...]
LHCb-PUB-2016-001; CERN-LHCb-PUB-2016-001.- Geneva : CERN, 2015 - 18. Fulltext: PDF;
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Measurements of the Minimum Bending Radius of Small Diameter Scintillating Plastic Fibres / Gruber, Lukas (CERN) ; Joram, Christian (CERN) ; Vaananen, Mika Petteri (University of Helsinki (FI)) ; Gavardi, Laura (Technische Universitaet Dortmund (DE))
The minimum bending radius of plastic fibres is an important parameter as it determines the geometrical flexibility of the fibres during long-term storage or installation and usage inside detectors. The following document describes measurements of the minimum bending radius of round scintillating plastic fibres with small diameter performed in the context of the LHCb SciFi Tracker project. [...]
LHCb-PUB-2018-008; CERN-LHCb-PUB-2018-008.- Geneva : CERN, 2018 - 8. Fulltext: PDF;
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Irradiation test of mirror samples for the LHCb SciFi tracker / Joram, Christian (CERN) ; Rodriguez Cavalcante, Ana Barbara (Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil) ; Gavardi, Laura (Technische Universitaet Dortmund (DE)) ; Ravotti, Federico (CERN) ; Schneider, Thomas (CERN)
The optical mirrors at the inner ends of the SciFi fibre modules in the upgraded LHCb detector will be exposed to an ionising dose reaching 35 kGy for an integrated luminosity of 50 /fb. This note describes a campaign at the cyclotron at KIT where 7 different samples were irradiated with 23 MeV protons. [...]
LHCb-PUB-2016-006; CERN-LHCb-PUB-2016-006.- Geneva : CERN, 2016 - 9. Fulltext: PDF;
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Studies for the LHCb SciFi Tracker - Development of Modules from Scintillating Fibres and Tests of their Radiation Hardness / Ekelhof, Robert Jan
The LHCb detector will see a major upgrade in the LHC long shutdown 2, which is planned for 2019/20 [...]
CERN-THESIS-2016-098 - 166 p.

Fulltext
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Commissioning, Calibration & Early Performance of the LHCb Scintillating Fibre Tracker / Witola, Lukas
The LHCb detector has undergone a major upgrade for Run 3 of the LHC enabling it to operate at a five times higher instantaneous luminosity and to read out the entire detector at a frequency of 40 MHz, corresponding to the bunch crossing frequency of the LHC [...]
CERN-THESIS-2024-152 - 2024 - 141.

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