General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DES-24-0082
Thesis topic details
Category
Corpuscular physics and outer space
Thesis topics
Experimental study of physical phenomena in a fission chamber
Contract
Thèse
Job description
For more than a decade, the Instrumentation, Sensors and Dosimetry laboratory (LDCI) at CEA/IRESNE Cadarache has been working on the optimisation and reliability of fission chambers. Such neutron detectors are essential for the safety and operation of nuclear power plants and to perform experiments in research reactors such as the Jules Horowitz Reactor. Conversely, those applications have needs for innovative, reliable and well-understood sensors. A special focus is placed on correcting for sensor failures and on calibration procedures to increase the dependability of the measurements.
In order to meet these needs, a PhD thesis is proposed at LDCI, on the experimental study of fission chambers of the Corex type: this versatile test chamber, designed during a previous PhD to study columnar recombination, can be operated without a reactor, for a simpler access and handling. The PhD student will make use of this test device to explore the physical phenomena at stake in the signal build-up, in order to revise and qualify the corresponding models and computational tools. These tools will then be used to perform theoretical studies on the chamber failure scenarios and its calibration in fluctuation and current modes as well.
The doctoral student will develop competence in modelling and implementing nuclear instrumentation.
University / doctoral school
Thesis topic location
Site
Cadarache
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
DE IZARRA Grégoire gregoire.DEIZARRA@cea.fr
CEA
DES/DER//LDCI
Dr Grégoire DE IZARRA
IRESNE, DES, DER/SPESI/LDCI Bât. 238
CEA, Centre de Cadarache
13108 Saint Paul-lès-Durance Cedex
+33 (0)4 4225 2992
Tutor / Responsible thesis director
FILLIATRE Phillipe philippe.filliatre@cea.fr
CEA
DEN/DER/SPESI/LDCI
CEA – Centre de Cadarache
13108 Saint Paul-lès-Durance
04 42 25 78 08
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