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CERN Document Server 2,029 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 0.41 Sekunden gedauert. 
1.
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Influence of variable tungsten valency on optical transmittance and radiation hardness of lead tungstate (PWO) scintillation crystals / Burachas, S ; Beloglovski, S Y ; Makov, I ; Saveliev, Yu ; Ippolitov, M S (Russian Research Center / Kurchatov Institute) ; Man'ko, V ; Nikulin, S P ; Nyanin, A ; Vasilev, A ; Apanasenko, A et al.
A new approach to interpret the radiation hardness of PbWO//4 (PWO) scintillators is developed by revealing importance of the inclusions of tungsten oxides WO//3//-//x with variable valency. It is demonstrated that the influence of the ionizing radiation on PWO is, in many aspects, similar to the effect of the high-temperature annealing in oxygenless ambient. [...]
2003 - Published in : Nucl. Instrum. Methods Phys. Res., A 505 (2003) 656-662
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2.
(91)
Lead tungstate crystals for the ALICE/CERN experiment / Ippolitov, M S (Russian Research Center / Kurchatov Institute) ; Beloglovski, S Y ; Burachas, S ; Ikonnikov, V ; Kuriakin, A ; Lebedev, V ; Makov, I ; Man'ko, V ; Nikulin, S ; Nyanin, A et al.
Light yield, emission and decay time spectra, and optical transmission of similar to 3600 (dimensions 22 multiplied by 22 multiplied by 180 mm**3) PbWO//4 (PWO) crystals were measured with test benches. Radiation beam-test results of PWO crystals are presented..
2005 - Published in : Nucl. Instrum. Methods Phys. Res., A 537 (2005) 353-356
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3.
(69)
Properties of lead tungstate crystals for high-energy physics / Ippolitov, M S (Russian Research Center / Kurchatov Institute) ; Beloglovski, S Y ; Burachas, S ; Ikonnikov, V ; Kuriakin, A ; Lebedev, V ; Makov, I ; Man'ko, V ; Nikulin, S P ; Nyanin, A et al.
Technology for the mass production of high-quality PbWO//4 (PWO) scintillating crystals is described. Scintillators produced from PWO crystals are intented for the ALICE CERN heavy ion experiment. [...]
2004 - Published in : Radiat. Meas. 38 (2004) 813-816
In : 5th European Conference on Luminescent Detectors and Transformers of Ionizing Radiation, Prague, Czech Republic, 1 - 5 Sep 2003, pp.813-16 (vol. 38)
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4.
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CMS-PHO-OREACH-2001-001
© 2001-2022 CERN 		The construction of the CMS electromagnetic calorimeter: lead-tungstate (PWO) crystals
La construction du calorimetre electromagnetique de CMS: les cristaux de PWO
APD (Avalanche PhotoDiodes) photodetectors are bei [...]
19 Feb 2001
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5.
(43)
Recent progress in the development of lead tungstate crystals / Baccaro, S
The investigation performed up to now on single crystals of PbWO/sub 4/ (PWO) provides the evidence of the possibility to optimise the optical properties of an intrinsic scintillator such as PWO: the control of essential requirements in the crystal preparation (raw material purity, growing methods and post-growth annealing) as well as the introduction of selected dopants at suitable concentrations (particularly trivalent and pentavalent ions) were found to be very successful in lowering the concentration of point defects in the lattice which strongly affect scintillation properties and radiation hardness. The optical transmission as well as light yield before and after irradiation was measured. [...]
1999 - Published in : IEEE Trans. Nucl. Sci. 46 (1999) 292-295
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6.
(40)
Status of the PWO crystal preproduction from Russia for CMS-ECAL / Auffray, Etiennette (CERN)
Since September 1998, the CMS electromagnetic calorimeter has entered into its construction phase. Since that time, 3500 PbWO/sub 4/ (PWO) crystals of excellent quality have been produced by Bogoroditsk Techno-Chemical Plant (BTCP) in Russia and analysed at the CERN regional centre. [...]
2001 - Published in : Nucl. Instrum. Methods Phys. Res., A 461 (2001) 365-7
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7.
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Application of PWO crystals for detection of low-activity gamma- radiation in the energy range above 3 MeV / Drobychev, G Yu (Belarus State U.) ; Baryshevsky, V G (Belarus State U.) ; Fedorov, A A (Belarus State U.) ; Khruschinsky, A A (Belarus State U.) ; Korjik, M V (Belarus State U.) ; Lecoq, P (CERN) ; Missevitch, O V (Belarus State U.)
Lead tungstate PbWO4 (PWO) scintillator was developed during the R&D; project initiated in a frame of preparation of experiments in high- energy physics to be carried out at new generation of colliders like LHC (CERN, Geneva, Switzerland). Compared to other promising fast and dense scintillators, PWO is an optimal compromise to make a very compact detector with good performance and the best price/performance ratio. [...]
2005 - Published in : Nucl. Instrum. Methods Phys. Res., A 537 (2005) 439-442
In : 7th International Conference on Inorganic Scintillators and their Use in Scientific and Industrial Applications, Valencia, Spain, 8 - 12 Sep 2003, pp.439-442
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8.
(33)
Certifying procedures for lead tungstate crystal parameters during mass production for the CMS ECAL / Auffray, Etiennette (CERN) ; Chevenier, G ; Chipaux, Rémi ; Drobychev, G Yu ; Dromby, G ; Fedorov, A A ; Freire, M ; Géléoc, M ; Kondratev, O V ; Korzhik, M V et al.
Certifying procedures and fully automated equipment for testing of Pb WO/sub 4/ (PWO) scintillators have been developed. The parameters to be verified are the optical transmission spectra in the longitudinal and transversal $9 directions; the light yield and its non-uniformity along the crystal; the scintillation kinetics; the radiation hardness and the dimensions. [...]
1998
In : 45th IEEE Nuclear Science Symposium and Medical Imaging Conference, Toronto, Canada, 8 - 14 Nov 1998, pp.508-13
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9.
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Performance of lead tungstate crystals for the CMS electromagnetic calorimeter / Dafinei, Ioan
A short description of the general characteristics of electromagnetic calorimeters (ECAL) and the motivation for their use in High Energy Physics is made. The quality requirements to the Lead Tungstate PbWO //4 (PWO) crystals to be used for the CMS-ECAL barrel and endcaps construction are summarised. [...]
2005 - Published in : Nucl. Instrum. Methods Phys. Res., A 537 (2005) 368-372
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10.
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A beam study of electromagnetic-shower calorimeter based on $PbWO_{4}$ heavy scintillation crystal / Hidaka, N ; Takamatsu, K ; Tsuru, T ; Inaba, S ; Fujii, Y ; Yasu, Y
In order to measure the energies and positions of high energy gamma - rays, we mostly use an electromagnetic-shower calorimeter. Recently, PbWO/sub 4/ (PWO) crystal has attracted attention as an excellent scintillation radiator for the EM-calorimeter because of its short radiation-length, fast decay-time of scintillation and high radiation resistivity. [...]
1999 - Published in : Mem. Fac. Eng. Miyazaki Univ. (1999) , no. 28, pp. 283-96
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