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46 results on '"Forkel-Wirth, Doris"'

1. Radiation protection at CERN

Author

Forkel-Wirth, Doris, Roesler, Stefan, Silari, Marco, Streit-Bianchi, Marilena, Theis, Christian, Vincke, Heinz, and Vincke, Helmut

Subjects
Physics - Accelerator Physics, Physics - Instrumentation and Detectors
Abstract

This paper gives a brief overview of the general principles of radiation protection legislation; explains radiological quantities and units, including some basic facts about radioactivity and the biological effects of radiation; and gives an overview of the classification of radiological areas at CERN, radiation fields at high-energy accelerators, and the radiation monitoring system used at CERN. A short section addresses the ALARA approach used at CERN., Comment: 22 pages, contribution to the CAS - CERN Accelerator School: Course on High Power Hadron Machines; 24 May - 2 Jun 2011, Bilbao, Spain

Published
2013
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3. Template. Vulnerability certificate

Author

Forkel-Wirth, Doris

Subjects
Other Subjects
Abstract

Template (FR/EN) for doctor to certify COVID-19 vulnerability status

Published
2020

7. Preface

Author

Forkel-Wirth, Doris and Bollen, Georg

Published
2000

11. INTEGRATED OPERATIONAL DOSIMETRY SYSTEM AT CERN

Author

Dumont, Gérald, primary, Pedrosa, Fernando Baltasar Dos Santos, additional, Carbonez, Pierre, additional, Forkel-Wirth, Doris, additional, Ninin, Pierre, additional, Fuentes, Eloy Reguero, additional, Roesler, Stefan, additional, and Vollaire, Joachim, additional

Published
2016
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14. INTEGRATED OPERATIONAL DOSIMETRY SYSTEM AT CERN.

Author

Dumont, Gérald, Dos Santos Pedrosa, Fernando Baltasar, Carbonez, Pierre, Forkel-Wirth, Doris, Ninin, Pierre, Fuentes, Eloy Reguero, Roesler, Stefan, and Vollaire, Joachim

Subjects
RADIATION dosimetry, ELECTRON accelerators, MAGNETIC coupling, ESTIMATION theory
Abstract

CERN, the European Organization for Nuclear Research, upgraded its operational dosimetry system in March 2013 to be prepared for the first Long Shutdown of CERN's facilities. The new system allows the immediate and automatic checking and recording of the dosimetry data before and after interventions in radiation areas. To facilitate the analysis of the data in context of CERN's approach to As Low As Reasonably Achievable (ALARA), this new system is interfaced to the Intervention Management Planning and Coordination Tool (IMPACT). IMPACT is a web-based application widely used in all CERN's accelerators and their associated technical infrastructures for the planning, the coordination and the approval of interventions (work permit principle). The coupling of the operational dosimetry database with the IMPACT repository allows a direct and almost immediate comparison of the actual dose with the estimations, in addition to enabling the configuration of alarm levels in the dosemeter in function of the intervention to be performed. [ABSTRACT FROM AUTHOR]

Published
2017
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15. TOWARDS A NOVEL MODULAR ARCHITECTURE FOR CERN RADIATION MONITORING.

Author

Boukabache, Hamza, Pangallo, Michel, Ducos, Gael, Cardines, Nicola, Bellotta, Antonio, Toner, Ciarán, Perrin, Daniel, and Forkel-Wirth, Doris

Subjects
RADIATION measurements, PHYSIOLOGICAL effects of ionizing radiation, RADIATION protection, SYSTEMS on a chip
Abstract

The European Organization for Nuclear Research (CERN) has the legal obligation to protect the public and the people working on its premises from any unjustified exposure to ionising radiation. In this context, radiation monitoring is one of the main concerns of the Radiation Protection Group. After 30 y of reliable service, the ARea CONtroller (ARCON) system is approaching the end of its lifecycle, which raises the need for new, more efficient radiation monitors with a high level of modularity to ensure better maintainability. Based on these two main principles, new detectors are currently being developed that will be capable of measuring very low dose rates down to 50 nSv h-1, whilst being able to measure radiation over an extensive range of 8 decades without any auto scaling. To reach these performances, CERN Radiation MOnitoring Electronics (CROME), the new generation of CERN radiation monitors, is based on the versatile architecture that includes new read-out electronics developed by the Instrumentation and Logistics section of the CERN Radiation Protection Group as well as a reconfigurable system on chip capable of performing complex processing calculations. Beside the capabilities of CROME to continuously measure the ambient dose rate, the system generates radiation alarms, provides interlock signals, drives alarm display units through a fieldbus and provides long-term, permanent and reliable data logging. The measurement tests performed during the first phase of the development show very promising results that pave the way to the second phase: the certification. [ABSTRACT FROM AUTHOR]

Published
2017
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17. Radiation monitoring system for the environment and safety project

Author

Forkel-Wirth, Doris, Perrin, D, Scibile, L, Segura, G, and Vojtyla, P

Subjects
Physics::Instrumentation and Detectors, Physics::Accelerator Physics, XX
Abstract

The project RAMSES (Radiation Monitoring System for the Environment and Safety) will provide LHC with a state of the art radiation monitoring and alarm system. RAMSES will survey the LHC accelerator, the LHC experimental areas and the environment of the LHC. The TIS (Technical Inspection and Safety) division will exploit this system to assess radiation risks and to control the releases of radioactivity. In addition, it will be integrated into the control rooms of the LHC accelerator and the LHC experiments. Obviously, RAMSES will already take into account CERN wide needs to renew the radiation monitoring system around the other CERN facilities. The requirements of the system are derived from CERN's own safety standards (CERN's Radiation Protection Manual, SAPOCO), from those of the CERN's two host states and from European standards. The mandate of the project team covers the system specification, prototyping, tendering, installation and integration of radiation monitors and industrial control equipment for safety systems. This paper outlines the scope, the organisation, the main system functionality and the commercial strategy.

Published
2002

18. COMPLIS experiments : COllaboration for spectroscopy Measurements using a Pulsed Laser Ion Source

Author

Sauvage, J, Boos, N, Cabaret, L, Crawford, J E, Duong, H T, Genevey, J, Girod, M, Huber, Gerhard, Ibrahim, Fadi, Krieg, M, Le Blanc, F, Lee, J K P, Libert, J, Lunney, D, Obert, J, Oms, J, Péru, S, Pinard, J, Putaux, J C, Roussière, B, Sebastian, V, Verney, D, Zemlyanoi, S, Arianer, J, Barré, N, Ducourtieux, M, Forkel-Wirth, Doris, Le Scornet, Geneviève, Lettry, Jacques, Richard-Serre, Claude, and Véron, C

Subjects
Nuclear Physics - Experiment
Published
2000

20. First PAC studies on the hydrogen diffusion in III-V semiconductors

Author

Burchard, A, Deicher, M, Fedosseev, V, Forkel-Wirth, Doris, Magerle, R, Mishin, V I, Egenter, A, and Spengler, R

Subjects
Condensed Matter
Abstract

We report on first experiments which observe on a microscopic scale the migration of isolated hydrogen in InP, InAs and GaAs. Using the radioactive acceptor 117Cd, Cd-H pairs have been formed in these III-V semiconductors. After the decay of 117Cd to 117In, H is no longer bound to 117In and can diffuse freely. This diffusion has been observed by perturbed gg angular correlation (PAC) spectroscopy. At 10 K, the occupation of two different lattice sites by hydrogen has been observed.

Published
1996

22. Characterization of the WENDI-II REM Counter for its Application at MedAustron

Author

JÄGERHOFER, Lukas, primary, FELDBAUMER, Eduard, additional, FORKEL-WIRTH, Doris, additional, THEIS, Chris, additional, VINCKE, Helmut, additional, IWAMOTO, Yosuke, additional, HAGIWARA, Masayuki, additional, SATOH, Daiki, additional, IWASE, Hiroshi, additional, YASHIMA, Hiroshi, additional, MATSUMOTO, Tetsuo, additional, MASUDA, Akihiko, additional, NISHIYAMA, Jun, additional, NAKAMURA, Takashi, additional, SATO, Tatsuhiko, additional, NAKANE, Yoshihiro, additional, NAKASHIMA, Hiroshi, additional, SAKAMOTO, Yukio, additional, TAMII, Atsushi, additional, and HATANAKA, Kichiji, additional

Published
2011
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23. Interaction of hydrogen with Cd acceptons in GaP and InP

Author

Forkel-Wirth, Doris, Achtziger, N, Burchard, A, Correia, J G, Deicher, M, Licht, T, Magerle, R, Meier, J, Pfeiffer, Wolfgang, Reislöhner, U, Rüb, M, and Witthuhn, W

Subjects
Other Fields of Physics
Published
1994

30. Acceptor-Hydrogen Complexes in InAs

Author

Forkel-Wirth, Doris, primary, Achtziger, N., additional, Burchard, A., additional, Correia, J.C., additional, Deicher, Manfred, additional, Grillenberger, Joachim, additional, Gottschalck, H., additional, Licht, T., additional, Magerle, R., additional, Reislöhner, U., additional, Rüb, M., additional, Toulemonde, M., additional, and Witthuhn, W., additional

Published
1995
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31. Acceptor-Hydrogen Interaction in Ternary III-V Semiconductors

Author

Burchard, A., primary, Deicher, Manfred, additional, Forkel-Wirth, Doris, additional, Freidinger, J., additional, Kerle, T., additional, Magerle, R., additional, Pfeiffer, Wulf, additional, Prost, W., additional, Wellmann, Peter J., additional, and Winnacker, Albrecht, additional

Published
1995
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