heavy ion

To recreate conditions similar to those of the very early universe, powerful accelerators make head-on collisions between massive ions, such as gold or lead nuclei. Learn more about CERN's heavy ion collisions here.
47 results

Accelerator Report: Getting lead ions ready for physics

In about a week, lead ions will be sent from the SPS into the LHC to collide in the accelerator’s four big experiments

News
Accelerators
13 September, 2023
Accelerators
News
13 September, 2023

ALICE sees the ridge in simplest collisions yet

The observation brings physicists a step closer to finding the origin of collective phenomena in small collision systems

News
Physics
31 March, 2023

First lead-ion collisions in the LHC at record energy

On Friday, 18 November, a test using collisions of lead ions was carried out in the LHC and provided an opportunity for the experiments to validate the new detectors and new data-processing systems ahead of next year’s lead-lead physics run.

News
Experiments
23 November, 2022
Experiments
News
23 November, 2022

ALICE pins down hypermatter properties

The collaboration’s latest study of a “strange”, unstable nucleus known as the hypertriton offers new insight into the particle interactions that may take place at the hearts of neutron stars

News
Physics
20 September, 2022
Physics
News
20 September, 2022

CMS collaboration releases its first open data from heavy-ion collisions

CMS data recorded in 2010 and 2011 from lead–lead collisions at the Large Hadron Collider have been released into the public domain for the first time

News
Knowledge sharing
13 January, 2021
Knowledge sharing
News
13 January, 2021

Recreating Big Bang matter on Earth

Our fifth story in the LHC Physics at Ten series looks at how the LHC has recreated and greatly advanced our knowledge of the state of matter that is believed to have existed shortly after the Big Bang

Feature
Physics
13 November, 2020
Physics
Feature
13 November, 2020

LS2 Report: Linac3 tests new equipment for higher-intensity beams

Linac3 is already producing lead-ion beams to test some crucial new equipment that could significantly increase beam intensity and quality

News
Accelerators
24 November, 2020
Accelerators
News
24 November, 2020

ATLAS observes light scattering off light

The ATLAS Collaboration has reported the observation of light-by-light scattering with a significance beyond eight standard deviations

News
Physics
19 March, 2019

ESA subjects AI chip to tests at CERN

Intel’s new Myriad 2 chip underwent tests at CERN’s SPS

News
Knowledge sharing
04 December, 2018
Knowledge sharing
News
04 December, 2018

LHC report: make way for the heavy ions

The first collisions of lead nuclei mark the start of a new LHC heavy-ion run

News
Accelerators
13 November, 2018
Accelerators
News
13 November, 2018

LHC report: xenon in action

The LHC had the unique opportunity of colliding xenon nuclei over several hours

News
Accelerators
24 October, 2017
Accelerators
News
24 October, 2017