LHC - Long Shutdown 2019-22

Taking a closer look at LHC

Initially scheduled as Long Shutdown 2 (2019 - 2020) it had to be extended until late 2021-early 2022, due to the Covid-19 pandemic. The programme originally followed the following schedule:

The LS2 upgrades to CERN accelerator chain

After more than three years of maintenance, consolidation and upgrades, the LHC The LHC is in its third major experimental phase (Run 3) which runs until the end of 2025.

Information on the most important work carried out in this extended Long Shutdown 2 can be found at the following link :

Long Shutdown 2019-22

(Taken from CERN Website) 


 In addition, in the LHC Run 3 Section and in the Detectors Section, some of the most important improvements made during LS2 are discussed.





Xabier Cid Vidal, PhD in experimental Particle Physics for Santiago University (USC). Research Fellow in experimental Particle Physics at CERN from January 2013 to Decembre 2015. He was until 2022 linked to the Department of Particle Physics of the USC as a "Juan de La Cierva", "Ramon y Cajal" fellow (Spanish Postdoctoral Senior Grants), and Associate Professor. Since 2023 is Senior Lecturer in that Department.(ORCID).

Ramon Cid Manzano, until his retirement in 2020 was secondary school Physics Teacher at IES de SAR (Santiago - Spain), and part-time Lecturer (Profesor Asociado) in Faculty of Education at the University of Santiago (Spain). He has a Degree in Physics and a Degree in Chemistry, and he is PhD for Santiago University (USC) (ORCID).



CERN Directory

CERN Experimental Program

Theoretical physics (TH)

CERN Experimental Physics Department

CERN Scientific Committees

CERN Structure

CERN and the Environment



Detector CMS

Detector ATLAS

Detector ALICE

Detector LHCb

Detector TOTEM

Detector LHCf

Detector MoEDAL

Detector FASER

Detector SND@LHC



 For the bibliography used when writing this Section please go to the References Section

© Xabier Cid Vidal & Ramon Cid - rcid@lhc-closer.es  | SANTIAGO (SPAIN) |