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Activity of LUMEN (1996-97) : Understanding of PbWO4 Scintillator Characteristics and their Optimisation
/ Baccaro, Stefania (ENEA, INN-TEC, Casaccia, Roma, Italy) ; Bohácek, P (Institute of Physics, Academy of Science, Prague, Czech Republic) ; Borgia, Bruno (Dipartimento di Fisica, Universita La Sapienza, Roma, Italy) ; Cecilia, Angelica (ENEA, INN-TEC, Casaccia, Roma, Italy) ; Croci, S (INFM, Dipartimento Scienza dei Materiali, Univ. di Milano) ; Dafinei, Ioan (Dipartimento di Fisica, Universita La Sapienza, Roma, Italy) ; Diemoz, Marcella (Dipartimento di Fisica, Universita La Sapienza, Roma, Italy) ; Fabeni, P (IROE-CNR, Firenze, Italy) ; Festinesi, Armando (ENEA, INN-TEC, Casaccia, Roma, Italy) ; Jarolímek, O (CRYTUR, Turnov, Czech Republic) et al.
The aim of the LUMEN co-operation, supported by INFN, is to obtain ful experimental characterisation and deep expertise of heavy scintillator for high energy physics. The advantage of this collaboration was mainly in the complementary character of the experimental techniques available in the partner laboratories and in the availability of highly experienced scientists indifferent fields. [...]
CMS-NOTE-1998-067.-
Geneva : CERN, 1998
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Further understanding of PbWO4 Scintillator characteristics and their optimisation. LUMEN activity in 1998
/ Baccaro, Stefania (INFN, Roma and ENEA, INN/TEC, Casaccia, Roma, Italy) ; Bohácek, P (titute of Physics, Academy of Science, Prague, Czech Republic) ; Borgia, Bruno (Univ. La Sapienza, Roma, Italy) ; Cecilia, Angelica (Univ. La Sapienza, Roma, Italy) ; Dafinei, Ioan (Univ. La Sapienza, Roma, Italy) ; Diemoz, Marcella (Univ. La Sapienza, Roma, Italy) ; Fabeni, P (INFM, Univ. di Milano, Italy) ; Festinesi, Armando (INFN, Roma and ENEA, INN/TEC, Casaccia, Roma, Italy) ; Longo, Egidio (Univ. La Sapienza, Roma, Italy) ; Martini, M (INFM, Univ. di Milano, Italy) et al.
The aim of LUMEN collaboration was the investigation on single crystals of PbWO4 ( PWO): the results performed up to now provide 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. [...]
CMS-NOTE-2000-002.-
Geneva : CERN, 2000
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APD Properties and Recovery from Radiation Damage
/ Baccaro, Stefania (INFN - Sezione di Roma, INFN - Sezione di Roma, ENEA-INN/TEC Casaccia Research Center, Roma, Italy) ; Borgia, Bruno (INFN - Sezione di Roma, Department of Physics, Universita 'La Sapienza', Roma, Italy) ; Caruso, S (INFN - Sezione di Roma, INFN - Sezione di Roma, ENEA-INN/TEC Casaccia Research Center, Roma, Italy) ; Cavallari, Francesca (INFN - Sezione di Roma, Department of Physics, Universita 'La Sapienza', Roma, Italy) ; Dafinei, Ioan (INFN - Sezione di Roma, Department of Physics, Universita 'La Sapienza', Roma, Italy) ; Diemoz, Marcella (INFN - Sezione di Roma, Department of Physics, Universita 'La Sapienza', Roma, Italy) ; Emeliantchik, Igor (Bielorussian State Univerisity, Minsk, Bielorussia) ; Festinesi, Armando (INFN - Sezione di Roma, Department of Physics, Universita 'La Sapienza', Roma, Italy) ; Longo, Egidio (INFN - Sezione di Roma, Department of Physics, Universita 'La Sapienza', Roma, Italy) ; Montecchi, Marco (INFN - Sezione di Roma, INFN - Sezione di Roma, ENEA-INN/TEC Casaccia Research Center, Roma, Italy) et al.
Avalanche photodiodes will be used to detect scintillation light from PWO crystals in the CMS electromagnetic calorimeter. Properties of Hamamatsu APD are reported special attention has been devoted to the study of radiation hardness and room temperature annealing. [...]
CMS-NOTE-1997-030.-
Geneva : CERN, 1997
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Radiation Damage Mechanism in PbWO4 Crystal and Radiation Hardness Quality Control of PWO Scintillators for CMS
/ Baccaro, Stefania (INFN - Sezione di Roma, ENEA - INN/TEC - Casaccia Research Center, Roma, Italy) ; Auffray, Etiennette (CERN) ; Borgia, Bruno (Department of Physics, University of Roma "La Sapienza", Roma, Italy) ; Cavallari, Francesca (Department of Physics, University of Roma "La Sapienza", Roma, Italy) ; Cecilia, Angelica (INFN - Sezione di Roma, ENEA - INN/TEC - Casaccia Research Center, Roma, Italy) ; Dafinei, Ioan (Department of Physics, University of Roma "La Sapienza", Roma, Italy) ; Diemoz, Marcella (Department of Physics, University of Roma "La Sapienza", Roma, Italy) ; Lecoq, Paul (CERN) ; Longo, Egidio (Department of Physics, University of Roma "La Sapienza", Roma, Italy) ; Montecchi, Marco (Department of Physics, University of Roma "La Sapienza", Roma, Italy) et al.
The optical damage induced by UV light in PbWO4 crystals is found to be similar to that induced by g radiation. Due to the peculiarities of optical absorption in PbWO4, the damage induced by UV light is a bulk process. [...]
CMS-NOTE-1997-038.-
Geneva : CERN, 1997
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Ultrafast nanocomposite scintillators based on Cd-enhanced CsPbCl$_3$ nanocrystals in polymer matrix
/ Erroi, Andrea (Milan Bicocca U.) ; Carulli, Francesco (Milan Bicocca U.) ; Cova, Francesca (Milan Bicocca U.) ; Frank, Isabel (CERN ; Munich U.) ; Zaffalon, Matteo L. (Milan Bicocca U.) ; Llusar, Jordi ; Mecca, Sara (Milan Bicocca U.) ; Cemmi, Alessia (ENEA, Rome) ; Di Sarcina, Ilaria (ENEA, Rome) ; Rossi, Francesca (CNR, Italy) et al.
Lead halide perovskite nanocrystals (LHP-NCs) embedded in polymer matrices are gaining traction for next-generation radiation detectors. While progress has been made on green-emitting CsPbBr$_3$ NCs, scant attention has been given to the scintillation properties of CsPbCl$_3$ NCs, which emit size-tunable UV-blue light matching the peak efficiency of ultrafast photodetectors. [...]
arXiv:2404.14813.-
2024-04-23 - 10 p.
- Published in : ACS Energy Lett.: 9 (2024) , no. 5, pp. 2333–2342
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Improvement of several properties of lead tungstate crystals with different doping ions
/ Auffray, Etiennette (CERN) ; Annenkov, Alexander (Bogoroditsk Techno Chemical Plant, Russia) ; Baccaro, Stefania (ENEA-INN/TEC/IRR , Casaccia Research Center, Roma, Italy) ; Cecilia, Angelica (ENEA-INN/TEC/IRR , Casaccia Research Center, Roma, Italy) ; Dafinei, Ioan (INFN, S. di Roma, Roma, Italy) ; Diemoz, Marcella (INFN, S. di Roma, Roma, Italy) ; Jarolímek, O (CRYTUR, Turnov, Czech Republic) ; Korzhik, Mikhail ; Lecoq, Paul (CERN) ; Nikl, M (Institute of Physics, Prague, Czech Republic)
A very good radiation resistance of Lead Tungstate crystals is mandatory for their use in the high precision electromagnetic calorimeter of the CMS experiment at LHC. Since the beginning of 1996 we have organised systematic investigations of the parameters influencing the radiation hardness of this crystal. [...]
CMS-NOTE-1997-054.-
Geneva : CERN, 1998
- Published in : Nucl. Instrum. Methods Phys. Res., A 402 (1998) 75-84
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Luminescence and scintillation properties of YAG:Ce single crystal and optical ceramics
/ Mihóková, E (Institute of Physics, ASCR, Prague, Czech Republic) ; Nikl, M (Institute of Physics, ASCR, Prague, Czech Republic) ; Mareš, J A (Institute of Physics, ASCR, Prague, Czech Republic) ; Beitlerová, A (Institute of Physics, ASCR, Prague, Czech Republic) ; Vedda, A (CNR-INFM and Dipartimento di Scienza dei Materiali, Univ. di Milano- Bicocca, Milano, Italy) ; Nejezchleb, K (Crytur Ltd., Turnov, Czech Republic) ; Blažek, K (Crytur Ltd., Turnov, Czech Republic) ; D’Ambrosio, C (CERN)
We use various techniques to study optical and scintillation properties of Ce-doped yttrium aluminum garnet, Y3Al5O12 (YAG:Ce), in the form of a high-quality industrial single crystal. This was compared to optical ceramics prepared from YAG:Ce nanopowders. [...]
2007
- Published in : J. Lumin. 126 (2007) 77-80
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Detection of Photons Generated in PWO Scintillator Crystals
/ Baccaro, Stefania (ENEA-INN-TEC, Roma, Italy) ; Borgia, Bruno (La Sapienza, Roma, Italy) ; Cavallari, Francesca (La Sapienza, Roma, Italy) ; Dafinei, Ioan (ENEA-INN-TEC, Roma, Italy) ; Diemoz, Marcella (La Sapienza, Roma, Italy) ; Festinesi, Armando (ENEA-INN-TEC, Roma, Italy) ; Longo, Egidio (La Sapienza, Roma, Italy) ; Montecchi, Marco (ENEA-INN-TEC, Roma, Italy) ; Organtini, Giovanni (Univ. Roma TRE, Roma, Italy) ; Piegari, A (ENEA-INN-TEC, Roma, Italy)
This work deals with the optical characterization of the surface of EG&G; and Hamamatsu APD's and performance of an antireflection coating made of Y2O3 and deposited on a PWO test piece. The effectiveness of antireflection treatments of PWO and Si surfaces is evaluated in a simplified and a realistic situation by means of the ratio of "detected to emitted photons". [...]
CMS-NOTE-1997-060.-
Geneva : CERN, 1998
- Published in : Nucl. Instrum. Methods Phys. Res., A 406 (1998) 276-286
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