1 sujet IRFU

Dernière mise à jour : 21-01-2021


««

• Neutronique

 

Imagerie neutronique et beta avec des détecteurs Micromegas à lecture optique

SL-DRF-21-0319

Domaine de recherche : Neutronique
Laboratoire d'accueil :

Département d’Electronique, des Détecteurs et d’Informatique pour la physique (DEDIP)

DÉtecteurs: PHYsique et Simulation (DEPHYS)

Saclay

Contact :

Thomas PAPAEVANGELOU

Esther FERRER RIBAS

Date souhaitée pour le début de la thèse : 01-10-2021

Contact :

Thomas PAPAEVANGELOU
CEA - DRF/IRFU/DEDIP/DEPHYS

01 69 08 2648

Directeur de thèse :

Esther FERRER RIBAS
CEA - DRF/IRFU/DEDIP/DEPHYS

0169083852

Page perso : http://irfu.cea.fr/Pisp/esther.ferrer-ribas/

Labo : http://irfu.cea.fr/dedip/index.php

Recent developments have shown that coupling a Micromegas gaseous detector on a glass substrate with a transparent anode and a CCD camera enable the optical readout of Micromegas detectors with an impressive spatial resolution showing that the glass Micromegas detector is well-suited for imaging. This feasibility test has been effectuated with low-X-ray photons permitting energy resolved imaging. This test opens the way to different applications. Here we will focus, on one hand, on neutron imaging for non-destructive examination of highly gamma-ray emitting objects, such as fresh irradiated nuclear fuel or radioactive waste and on the other hand, we would like to develop a beta imager at the cell level in the field of anticancerous drug studies.

Both applications require gas simulations to optimize light yields, optimization of the camera operation mode and design of the detectors in view of the specific constraints of reactor dismantling and medical applications: spatial resolution and strong gamma suppression for neutron imaging and precise rate and energy spectrum measurements for the beta. The image acquisition will be optimized for each case and dedicated processing algorithms will be developed.

 

Retour en haut