The Korean Physical Society 06130 22, Teheran-ro 7-gil, Gangnam-gu, Seoul, Republic of Korea 610 Representation : Tae Won NOH TEL: 02-556-4737 FAX: 02-554-1643 E-mail : Copyright(C) KPS, All rights reserved.
30 May 2022 to 4 June 2022
Virtual Seoul
Asia/Seoul timezone

Accurate measurement of the 235U antineutrino spectrum by the STEREO experiment

Not scheduled
Virtual Seoul

Virtual Seoul

Poster Reactor neutrinos Poster


Rudolph Rogly (CEA)


Located at the ILL research facility (Grenoble, France), STEREO detects antineutrinos produced by fissions within the ILL’s reactor core. Because the reactor fuel is highly enriched in 235U, the antineutrino flux almost entirely originates from this one isotope, allowing a complete study of the 235U-induced antineutrino spectrum.
In the poster we will present an accurate measurement of the 235U antineutrino spectrum with the final data set from STEREO. Unfolding methods have been developed in order to infer a spectrum expressed in antineutrino energy with negligible bias. We will then discuss the anomalies of reactor antineutrino spectrum, namely the deficit with respect to the Huber reference model and the 5-MeV bump. A global fit including data from other experiments will also be presented to give further insight on these anomalies.

Collaboration STEREO

Primary authors

Rudolph Rogly (CEA) Dr Matthieu Licciardi (LPSC - Grenoble, France)

Presentation Materials