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-DRF-25-0228
Direction
DRF
Thesis topic details
Category
Corpuscular physics and outer space
Thesis topics
Time reversal invariance test in nuclear beta decay: Analysis of the data of MORA at JYFL
Contract
Thèse
Job description
The Matter’s Origin from RadioActivity (MORA) experiment searches for a sign of CP violation in nuclear beta decay, via the precise measurement of the so-called D correlation. An innovative technique of in-trap ion polarization for such a measurement enables attaining unprecedented sensitivity to New Physics, which could explain the matter-antimatter asymmetry observed in the universe. With a goal in sensitivity on a non-zero D of a few 10-4, the measurement that MORA is undertaking at Jyväskylä will be competitive with the best limit obtained so far on a non-zero D correlation in neutron decay [5]. To attain such precision regime several weeks of data taking are required along the coming years (2025-2027) at Jyväskylä, both for 23Mg+ and 39Ca+. The data analysis has to be undertaken in parallel. Crosschecks and adaptation of existing simulations of individual detectors of MORA, performed with GEANT4 and PENELOPE Monte Carlo codes, are required to pursue the investigation of systematics effects potentially affecting the final sensitivity on D. Dissemination of the results of the data analysis at national and international conferences will be asked to the PhD student.
University / doctoral school
Physique, Sciences de l’Ingénieur, Matériaux, Énergie (PSIME)
Caen
Thesis topic location
Site
Saclay
Requester
Position start date
01/10/2025
Person to be contacted by the applicant
DELAHAYE Pierre
delahaye@ganil.fr
CNRS
GANIL/Grand Accélérateur National d’Ions Lourds
Bld Henri Becquerel
BP 55027
14076 Caecedex 5
02 31 45 4539
Tutor / Responsible thesis director
DELAHAYE Pierre
delahaye@ganil.fr
CNRS
GANIL/Grand Accélérateur National d’Ions Lourds
Bld Henri Becquerel
BP 55027
14076 Caecedex 5
02 31 45 4539
En savoir plus
https://www.ganil-spiral2.eu/wp-content/uploads/2024/10/AniMOJy-thesis2025.pdf