Category: Newsletter
-
FASER Detector Installation
FASER Detector Installation During March the FASER detector was successfully installed into the LHC complex. FASER, a new small LHC experiment, designed to search for light, weakly interacting new particles in the LHC collisions was proposed in 2017, and after review by the LHCC, approved by CERN in March 2019. Since then, the FASER team
-
The commissioning and installation of the new ALICE ITS
The commissioning and installation of the new ALICE ITS The Inner Tracking System (ITS) is the innermost detector of the ALICE central barrel. It consists of seven cylindrical layers all equipped with Monolithic Active Pixel Sensors (MAPS) named ALPIDE (ALice PIxel DEtector). The ITS allows track ing charged particles of very low transverse momentum at
-
Pinning down the muon (g-2) anomaly at the CERN SPS
Pinning down the muon (g-2) anomaly at the CERN SPS The Dirac equation predicts the muon gyromagnetic ratio g=2. Loop effects from quantum field theory lead to a small deviation from this value, parameterized by the so called anomalous magnetic moment which is defined as aμ=(g-2)/2. The difference between the theoretical prediction and the experimental
-
Aligning the ATLAS muon spectrometer
Aligning the ATLAS muon spectrometer If you visit the ATLAS experimental cavern, the first thing you’ll see is the muon spectrometer: several thousand chambers that make up the outermost layer of the experiment (see image above). As muons fly out of the collision point, their tracks curve due to a surrounding toroidal magnetic field. By
-
DT group publishes 2020 annual report
DT group publishes 2020 annual report Last week, CERN's EP-DT group published their annual report for 2020; a detailed accound of the group activities at CERN conducted over the year in collaboration with the LHC and non-LHC experimental groups along with their academic and industrial partners worldwide. These activities are part of the group's mandate
-
ISOLDE determines precise nuclear moments by devising novel experimental technique
ISOLDE determines precise nuclear moments by devising novel experimental technique Nuclear quadrupole moments (Q), a measure of charge asymmetry in nuclei, are experimentally accessible via the quadrupole interaction frequency νQ=eQVzz/h. To extract Q from this information one needs to know Vzz, the electric-field gradient at the nuclear site. This must come from theory, to date
-
LHC takes on the SMEFT challenge
LHC takes on the SMEFT challenge The quest for new physics at the LHC is entering a new phase: the experiments are designing new strategies to target potential deviations from the Standard Model (SM) predictions in a systematic way, to complement the traditional “bump hunts” and, potentially, extend their sensitivity to mass regions beyond the
-
Colliding Particles meet Gravitational Waves
Colliding Particles meet Gravitational Waves Gravitational waves contain crucial information on the structure and on the history of the Universe. They can give us access to unique insights on particle physics at very high energies and astrophysics in extreme regimes. The detection of gravitational waves and the measurement of their properties is arguably one of
-
ATLAS faces the challenge of Run 3
ATLAS faces the challenge of Run 3 The ATLAS experiment is a general-purpose particle detector operating at the LHC. It consists of several concentric layers of particle detectors occupying a cylindrical volume 46m long and 25m in diameter. The innermost detectors reconstruct the trajectories of charged particles produced in the beam collisions with high precision.
-
A word from the EP Deputy Department Head – March 2021
A word from the EP Deputy Department Head – March 2021 Dear Colleagues in EP, We are in the second year of a global pandemic. Safety measures and travel restrictions are impacting our work, communication and social life. Despite all the difficulties, the new issue of the EP Newsletter demonstrates that scientific life at CERN