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CERN Document Server 2,022 records found  1 - 10nextend  jump to record: Search took 0.95 seconds. 
1.
(100)
A novel technique for the optimization and reduction of gamma spectroscopy geometry uncertainties / Frosio, Thomas (CERN) ; Menaa, Nabil (CERN) ; Bertreix, Philippe (CERN) ; Rimlinger, Maeva (CERN) ; Theis, Chris (CERN)
Material activation can sometimes cause large heterogeneities in the distribution of radioactivity (hotspots). Moreover, the sample geometry parameters are not always well known. [...]
2020 - 16 p. - Published in : Appl. Radiat. Isot. 156 (2020) 108953 Fulltext from publisher: PDF;
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2.
(91)
A new gamma spectroscopy methodology based on probabilistic uncertainty estimation and conservative approach / Frosio, Thomas (CERN) ; Menaa, Nabil (CERN) ; Duchemin, Charlotte (CERN) ; Riggaz, Nicolas (CERN) ; Theis, Chris (CERN)
The gamma spectroscopy technique is commonly used in many applications to evaluate the activity of gamma emitters in a given sample. This assessment of activity is of particular interest for the disposal of radioactive waste or for clearance purposes. [...]
2020 - Published in : Appl. Radiat. Isot. 155 (2020) 108929 Fulltext: PDF;
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3.
(74)
An enhanced characterization process for the elimination of very low level radioactive waste in particle accelerators / Frosio, Thomas (CERN) ; Bertreix, Philippe (CERN) ; Magistris, Matteo (CERN) ; Menaa, Nabil (CERN) ; Michaud, Régis (CERN) ; Rimlinger, Maeva (CERN) ; Theis, Chris (CERN) ; Ulrici, Luisa (CERN) ; Zaffora, Biagio (CERN)
The elimination of very low level waste towards the French national repository requires their radiological characterization to estimate the radionuclide inventory and the associated activities within a waste package. Such characterization is performed by means of activation calculations and measurements. [...]
2020 - Published in : Appl. Radiat. Isot. 166 (2020) 109312
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4.
(68)
Spectrum and Yield to Dose Conversion Coefficients for Beta Skin Doses Linked to the Q System / Frosio, Thomas (CERN) ; Bertreix, Philippe (CERN) ; Köster, Ulli (Laue-Langevin Inst.) ; Theis, Christian (CERN) ; Magistris, Matteo (CERN)
Monte Carlo simulations are a state-of-the-art method to calculate dose coefficients and could be used with the Q system for radioactive material packaging. These simulations often take a long time to converge with sufficient precision. [...]
2019 - 12 p. - Published in : Health Phys. 116 (2019) 607-618 Fulltext: PDF;
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5.
(56)
Qualification of gamma spectrometry measurement for the radiological characterization of mixed VLLW cables in particle accelerators / Rimlinger, Maeva (CERN) ; Frosio, Thomas (CERN) ; Menaa, Nabil (CERN) ; Magistris, Matteo (CERN) ; Theis, Chris (CERN)
In the framework of maintenance activities in particle accelerators, such as upgrades and dismantling, a large number of activated equipment are removed from the accelerator complex and require characterization in view of their disposal as radioactive waste. In particular, cables can be of different types. [...]
2020 - 10 p. - Published in : Appl. Radiat. Isot. 166 (2020) 109419 Fulltext: PDF;
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6.
(53)
Radiological characterization of large electromagnets in view of their elimination as very low-level wastes / Frosio, Thomas (CERN) ; Magistris, Matteo (CERN) ; Menaa, Nabil (CERN) ; Michaud, Régis (CERN) ; Rimlinger, Maeva (CERN) ; Theis, Chris (CERN)
The operation of particle accelerators at CERN requires the use of electromagnets, which are accelerator components used to guide and focus charged particles. In the framework of maintenance activities and machine upgrades or dismantling, a large number of magnets are removed from the accelerator complex and required characterization in view of their disposal as radioactive waste. [...]
2020 - 13 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 959 (2020) 163493 Fulltext from publisher: PDF;
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7.
(28)
Computation of radioactive material transport limits within A1/A2 Working Group at IAEA TRANSSC / Frosio, Thomas (CERN) ; Bertreix, Philippe (CERN) ; Theis, Chris (CERN) ; Donjoux, Yann (CERN) ; Cabianca, Tiberio (Public Health England, London) ; Brown, Iain (Public Health England, London) ; Foster, Matthew (Public Health England, London) ; Endres, Janis (Gesellschaft für Anlagen-und Reaktorsicherheit, Cologne) ; Eberhardt, Holger (Gesellschaft für Anlagen-und Reaktorsicherheit, Cologne) ; Hayakawa, Nobuhiro (MHI NS Engineering Company, Yokohama) et al.
IAEA's (International Atomic Energy Agency) publication SSG-26 defines a methodology for calculating A1/A2 values. These values were conceived as limits for the transport of radioactive goods, to limit the public's exposure to radiation in the event of an accident. [...]
2020 - 15 p. - Published in : IEEE Access 8 (2020) 29040-29054 Fulltext: PDF;
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8.
(24)
Classification of radiological objects at the exit of accelerators with a dose-rate constraint / Frosio, Thomas (CERN) ; Dumont, Gerald (CERN) ; Froeschl, Robert (CERN) ; Iliopoulou, Elpida (CERN) ; Magistris, Matteo (CERN) ; Menaa, Nabil (CERN) ; Roesler, Stefan (CERN) ; Theis, Chris (CERN) ; Vincke, Heinz (CERN) ; Vincke, Helmut (CERN)
Maintenance activities and operations of high-energy particle accelerators can lead to the collection of radioactive equipment as well as waste materials. In order to ensure their proper classification as radioactive or non-radioactive, one has to quantify the activities of radionuclides produced. [...]
2020 - 13 p. - Published in : Appl. Radiat. Isot. 165 (2020) 109303 Fulltext: PDF;
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9.
(24)
New methodology for in-situ classification of radiological items with a clearance monitor system / Frosio, Thomas (CERN) ; Menaa, Nabil (CERN) ; Dumont, Gérald (CERN) ; Aberle, Frédéric (CERN)
Maintenance activities and operations of high-energy particle accelerators can lead to the collection ofradioactive equipment as well as waste materials. In order to ensure their proper classification as radioactiveor non-radioactive, one has to quantify the activities of radionuclides produced. [...]
2020 - 8 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 966 (2020) 163847 Fulltext: PDF;
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10.
(24)
Generation of low-energy neutrons cross-sections for the Monte Carlo code FLUKA and the deterministic code ActiWiz / Frosio, Thomas (CERN) ; Magistris, Matteo (CERN) ; Theis, Chris (CERN) ; Vincke, Helmut (CERN)
Activation of material is of interest for waste treatment and hazard assessment. In particular, activation of printed circuit can lead to the production of radionuclides at an isomeric state, for example, coming from silver. [...]
2020 - 6 p. - Published in : Appl. Radiat. Isot. 166 (2020) 109352 Fulltext: PDF;
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