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The ATLAS detector

Together with scientists from around the world, physicists at the MPP have developed and constructed the particle detector ATLAS. ATLAS is an experiment at the Large Hadron Collider (LHC), a particle accelerator at the CERN research center in Geneva. The LHC began operating in 2008. In March 2010, the research program got under way at this proton-proton accelerator, working with the highest energies achieved to date at any accelerator facility. With the help of the LHC, researchers from all over the world want to coax out the secrets of the structure of matter and the fundamental forces.

ATLAS records the results of proton-proton collisions produced by the LHC. In the process, conditions similar to those in the extremely early, hot and dense universe shortly after the Big Bang are created. From that, the researchers gain insights about the fundamental building blocks of matter as well as their interactions. They are looking for new phenomena, such as the existence of higher dimensions of space and time and the origin of the dark matter that holds our universe together.

The MPP was and is involved with the development of instruments essential to the ATLAS detector – the inner detector, the calorimeters, and the muon chambers – as well as the setup of the computing system. Technical upgrades are scheduled to be completed by 2025. The goal is to increase the number of proton collisions in order to obtain more data. MPP scientists and technicians are working to make ATLAS fit for the coming surge of new data.

25 years of ATLAS

The 25th anniversary of the ATLAS experiment

In 2017, ATLAS celebrates its 25th birthday. The history of the truly big experiment began on October 1, 1992, when close to 90 research instituitions signed a common letter of intent to build a detector for proton-proton collisions. The Max Planck Institute for Physics was one these, its scientists contributed to the devolopment of major ATLAS components.

The greatest success of the ATLAS experiment so far was the discovery of the Higgs boson in 2012. As early as the 1960s, the theoretical phycisitst Peter Higgs, François Englert and Robert Brouthad proposed the existence of this particle: As a building block of the Standard Model, it gives other elementary particles their mass. For this, Higgs and Englert received the 2013 Nobel Prize.

Since June 2015, the LHC accelerator has been running with a record energy of 13 teraelectronvolts – nearly twice as much as in the years before. With that, the researchers hope to discover "new physics" – that is, particles and effects that do not occur in the Standard Model but which could help to solve the puzzles of the dark matter, the dark energy, and the missing antimatter in the universe.

Further information on the ATLAS experiment

News releases

06/04/2018

New Results from the ATLAS Experiment

Scientists observe coupling of the Higgs boson to top quarks

Almost exactly six years ago, CERN discovered the Higgs boson, which is responsible for the mass of other elementary particles. Since then, the Higgs particle has been the focus of extensive research. For the first time, scientists from the ATLAS experiment at CERN's Large Hadron Collider, with the...

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07/10/2017

Exactly five years after the Higgs boson discovery at the Large Hadron Collider (LHC) at CERN, new studies of this particle, involving significant MPP contributions, are presented at the EPS-HEP conference in Venice. The results are based on Run-2 proton-proton collision data collected by the ATLAS...

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06/29/2017

The Large Hadron Collider (LHC) at CERN will be upgraded to ten times higher beam intensity by the year 2025, the high-luminosity Phase-II of the LHC, called HL-LHC.  It which will lead to a further increase of the discovery potential for new particles and much higher accuracy in the measurement of...

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02/16/2017

The MPP has spent the last few weeks equipping the ATLAS detector, the largest physics experiment in the world, with twelve new muon chambers. These instruments operate with much higher precision and read-out speed than their predecessors. They were developed and constructed at the MPP, including...

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11/29/2016

The ATLAS detector is currently undergoing a substantial upgrade: The Max Planck Institute for Physics (MPP) has developed novel drift-tube chambers to measure muon tracks. The Institute will supply 12 of these muon chambers to CERN, where they are due to be installed in the ATLAS detector early in...

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04/21/2016

After the discovery of the Higgs boson at the Large Hadron Collider (LHC) in 2012 the particle physicists have been working even harder on the study of the properties of the Higgs boson and on the search for new particles. Particle physicist from all over the world will meet at the Max-Planck...

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01/13/2016

Jagd auf neue Elementarteilchen – was einen jungen Physiker an seiner Forschung fasziniert

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10/01/2015

The search for rare particles continues unabated at the Large Hadron Collider (LHC). In fact, the LHC will not achieve its peak performance before 2025; by then the upgraded High Luminosity (HL) LHC will accelerate and collide considerably more proton bunches than before. Scientists will need to...

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09/23/2015

It’s all about high-energy and astroparticle physics at Wildbad Kreuth from Oct. 4 to 9, 2015, when the Max Planck Institute for Physics hosts this year’s International Symposium on Multiparticle Dynamics (ISMD). Held annually since 1970, the ISMD conference rotates from year to year among different...

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06/09/2015

Group members

name function extension www

Barillari, Teresa, Dr.

Scientist 369

Baron Perez, Nicolas

Student 462

Beyer, Julien-Christopher

PhD Student 462

Britzger, Daniel

Scientist 453

Bruce, Catriona

Student 591

Chatterjee, Meghranjana

Student 462

Chikkaballi Ramalingegowda, Abishek

Student 416

Cieri, Davide, Dr.

Scientist 358

Delle Fratte, Cesare

Scientist 089 3299 1157

Duda, Dominik, Dr.

Scientist 256

Ecker, Katharina

PhD Student 220

Gadow, Philipp

PhD Student 220

Hönle, Andreas

PhD Student 376

Junggeburth, Johannes

PhD Student 226

Kiryunin, Andrey, Ph.D.

Scientist 286

Klaar, Rabea

Student 454

Klimpel, Fabian

Student CERN

Kluth, Stefan, PD Dr.

Scientist 468

Kortner, Oliver, PD Dr.

Scientist 240

Kortner, Sandra, Dr.

Scientist 288

Krauss, Dominik

PhD Student 559

Kroha, Hubert, Prof. Dr.

Scientist 435

Köhler, Nicolas

PhD Student 226

Leis, Ulrich

Engineering 550

Macchiolo, Anna, Dr.

Scientist 265

Maschek, Stefan

PhD Student 358

McCarthy, Thomas George, Ph.D.

Scientist 540

Menke, Sven, Dr.

Scientist 410

www.mpp.mpg.de/~menke/

Nisius, Richard, PD Dr.

Scientist 474

www.mpp.mpg.de/~nisius/

Pearson, Ben L., Ph.D.

Scientist 265

Popov, Ivan

Student

Rendel, Marian

Student 559

Richter, Robert, Dr.

Scientist 358

Rieck, Patrick, Dr.

Scientist 256

Röhrig, Rainer

PhD Student 226

Schacht, Peter, Dr.

Scientist 228

Schermer, Nicole

454

Schmidt-Sommerfeld, Korbinian

PhD Student 376

Scyboz, Ludovic

PhD Student 453

Selle, Patrick

Student 560

Sinner, Maxim

Student 561

Soyk, Daniel

Engineering 374

Spalla, Margherita

Scientist 286

Stonjek, Stefan, Dr.

Scientist 296

www.mpp.mpg.de/~stonjek/

Tafula, Sergio

Scientist 089 3299 1542

Teshima, Makoto

Student 560

Verbytskyi, Andrii, Dr.

Scientist 453

Walbrecht, Verena

PhD Student 220

Zinonos, Zinonas, Ph.D.

Scientist 559

Key publications

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
ATLAS Collaboration (Georges Aad (Freiburg U.) et al.). Jul 2012. 29 pp.
Published in Phys.Lett. B716 (2012) 1-29
arXiv:1207.7214
DOI: 10.1016/j.physletb.2012.08.020
   
The ATLAS Experiment at the CERN Large Hadron Collider
ATLAS Collaboration (G. Aad (Marseille, CPPM) et al.). 2008. 437 pp.
JINST 3 (2008) S08003
DOI: 10.1088/1748-0221/3/08/S08003
   
Measurements of the Higgs boson production and decay rates and coupling
strengths using pp collision data at √s=7 and 8 TeV in the ATLAS experiment
ATLAS Collaboration (Georges Aad (Marseille, CPPM) et al.). Jul 16, 2015. 64 pp.
Eur.Phys.J. C76 (2016) no.1
arXiv:1507.04548 [hep-ex]
DOI: 10.1140/epjc/s10052-015-3769-y

Measurement of the top quark mass in the tt¯→ lepton+jets
and tt¯→ dilepton  channels using √s=7 TeV ATLAS data
ATLAS Collaboration (Georges Aad (Marseille, CPPM) et al.). Mar 18, 2015. 35 pp.
Published in Eur.Phys.J. C75 (2015) no.7, 330
arXiv:1503.05427
DOI: 10.1140/epjc/s10052-015-3544-0
   
Search for the electroweak production of supersymmetric particles in √s=8 TeV pp
collisions with the ATLAS detector
ATLAS Collaboration (Georges Aad (Marseille, CPPM) et al.). Sep 23, 2015. 61 pp.
Published in Phys.Rev. D93 (2016) no.5, 052002
arXiv:1509.07152 [hep-ex]
DOI: 10.1103/PhysRevD.93.052002