Research

It is within international collaborations, bringing together hundreds or even thousands of scientists, that the teams at LAPP pursue experimental programs with major instruments dedicated to the study of elementary particle physics and the observation and detection of cosmic signals and particles.

These very complex experiments can have a lifespan of several decades and involve cutting-edge technologies in the fields of electronics, computer science, and mechanics. They also generate significant data flows that LAPP, thanks to its digital and IT expertise, helps to store and analyze.

Scientific Research Activities

Particle Physics

Created in 1976 under the impetus of Parisian physicists eager to get closer to CERN, LAPP has participated in experiments that have marked the history of particle physics. The researchers at LAPP first got involved in CERN experiments, such as UA1, which led to the discovery of the Z and W bosons in 1983 (Nobel Prize in Physics in 1984), and then in several experiments (ALEPH, L3) with the large LEP collider, which allowed for very precise verification of the predictions of the standard model of particle physics. With the BaBar experiment, they contributed to the discovery of CP symmetry violation between matter and antimatter. Finally, through Atlas, they contributed to the discovery of the Higgs boson in 2012. Even today, LAPP researchers and engineers are still searching for new particles and deviations from the standard model with the Atlas and LHCb experiments.

ATLAS

ATLAS

Higgs Boson
LHCb

LHCb

Matter / Antimatter
R & D

R & D

FCC Accelerator

Astroparticle physics et Cosmology

The activities of LAPP also involve astroparticle physics, with experiments searching for dark matter such as AMS (launched into orbit on the International Space Station in 2011) or the HESS telescopes and soon CTA. LAPP is also working on understanding dark energy with LSST. With Virgo, a giant interferometer installed in Italy, researchers have also undertaken the confirmation of the existence of gravitational waves: a major breakthrough occurred in 2015 with the first detection of these waves. Once again, the scientists at LAPP were at the forefront.

VIRGO

VIRGO

Gravitational Waves
CTA

CTA

Gamma Astronomy
Vera C. Rubin (LSST)

Vera C. Rubin (LSST)

Cosmology
Einstein Telescope

Einstein Telescope

Gravitational Waves
H.E.S.S.

H.E.S.S.

Gamma Astronomy

Neutrino Physics

Furthermore, the laboratory teams have been working for several decades to understand neutrinos, these elementary particles of very low mass that easily pass through matter and exhibit remarkable transformation properties. They have participated in the design and implementation of several experiments: Bugey, Nomad, Chooz, OPERA, and more recently STEREO, SuperNemo, and Dune (in preparation). In 2015, the OPERA collaboration announced the discovery of the oscillation of muon neutrinos into tau neutrinos!

DUNE

DUNE

CP symmetry violation
STEREO

STEREO

Sterile Neutrino
SuperNEMO

SuperNEMO

Double Beta Decay

Laboratory services

The engineers, technicians, and administrative staff, who represent the majority of the laboratory members, are grouped into four departments.

ELECTRONICS

ELECTRONICS

COMPUTER SCIENCE

COMPUTER SCIENCE

MECANICS

MECANICS

ADMINISTRATION

ADMINISTRATION

Exploratory projects, collaborative initiatives, innovation, training, and valorization activities.