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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. A major technical upgrade is scheduled to start from 2026. 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.

Three decades of ATLAS

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.

ATLAS at the MPP

News releases

ATLAS candidate event for the Higgs boson production in association with two top quarks. The Higgs boson is detected through its decay into two photons (light blue lines), while the top quark decays are reconstructed from six hadronic showers (yellow and blue cones).

Scientists observe coupling of the Higgs boson to top quarks

New Results from the ATLAS Experiment

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…

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A candidate for a Higgs boson decay into two electrons (blue) and two muons (red), recorded in September 2015 with the ATLAS detector at the LHC.

Exploring the unknown with the Higgs boson - new ATLAS results released

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…

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The newly developed chip for the new readout system of the muon chambers used in HL-LHC. (Photo: M. Fras/MPP)

ATLAS Muon Detector Readout Electronics Workshop, 03-04 July 2017 at MPP

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…

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Installation of a muon chamber in the ATLAS detector

New muon chambers successfully installed in the ATLAS detector

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…

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ATLAS detector: New muon chambers with higher precision

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…

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Higgs boson under a new scrutiny - heading for more discoveries

ATLAS Higgs ZZ Workshop at MPP

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…

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Bayern 2 Radio: Interview mit Andreas Maier

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

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It’s muons that matter - new detectors for the ATLAS experiment

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…

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MPI for Physics hosts high-energy physics conference

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…

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ATLAS Begins Recording Physics Data at 13 TeV

Today ATLAS and other particle physics experiments at CERN's Large Hadron Collider (LHC) began recording physics data from 13 TeV proton collisions, which allow for precision studies of the Higgs boson and other Standard Model particles, as well as…

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Group members

E-mail address: e-mail@mpp.mpg.de
Phone number: +49 89 32354-extension
name function e-mail extension office
Alvarez Bernal, Guillem Student guillem.alvarez 453 A.2.28
Barillari, Teresa, Dr. Senior Scientist teresa.barillari 369 A.1.41
Bethke, Siegfried, Prof. Dr. Emeritus siegfried.bethke 381 A.2.05
Bharthuar, Shudhashil, Dr. Postdoc shudhashil.bharthuar 462 A.1.39
Bollmann, Gero Student gero.bollmann 503 A.2.15
Britzger, Daniel, Dr. Postdoc daniel.britzger 453 A.2.28
Buchin, Daniel PhD Student daniel.buchin 376 A.2.21
Cieri, Davide, Dr. Senior Scientist davide.cieri 226 A.2.10
Costa, Davide Student davide.costa 503 A.2.15
Cuppini, Elena PhD Student elena.cuppini 376 A.2.21
D'Andrea, Michele Student michele.dandrea 511 A.3.03
Delle Fratte, Cesare Senior Scientist cesare.delle.fratte 518 A.1.77
Düerkop, Paul Student paul.dueerkop 462 A.1.39
Eder, Stefan Student stefan.eder 503 A.2.15
Ercher, Christian Student christian.ercher 416 A.2.26
Funk, Wolfgang wolfgang.funk 503 A.2.15
Greco, Matteo, Dr. Postdoc matteo.greco 511 A.3.03
Grewe, Simon PhD Student simon.grewe 358 A.2.19
Griese, Maximilian Student maximilian.griese 503 A.2.15
Hessler, Johannes PhD Student johannes.hessler 453 A.2.28
Jia, Xuewei, Dr. Postdoc xuewei.jia 552 A.2.17
Kado, Marumi, Prof. Dr. Director marumi.kado 382 A.2.45
Kiryunin, Andrey, Ph.D. Senior Scientist andrey.kiryunin 286 A.0.91
Kluth, Stefan, PD Dr. Senior Scientist stefan.kluth 468 A.2.37
Kortner, Oliver, PD Dr. Senior Scientist oliver.kortner 240 A.2.12
Kortner, Sandra, Dr. Senior Scientist sandra.kortner 288 A.2.14
Kroha, Hubert, Prof. Dr. Senior Scientist hubert.kroha 435 A.2.29
Kube, Nick Student nick.kube 503 A.2.15
Lautier, Remi Student remi.lautier 559 A.3.01
Leis, Ulrich Engineering ulrich.leis 550 A.1.67
Li, Changqiao, Ph.D. Postdoc changqiao.li 265 A.2.30
Locatelli, Beatrice Student beatrice.locatelli 503 A.2.15
Lohrmann, Max Emanuel Student max.lohrmann 559 A.2.23
Maly, Pavel, Ph.D. Engineering pavel.maly 385 B.2.FL2
Marques Boonen, Marcel Student marcel.boonen 376 A.2.21
Meier, Nick PhD Student nick.meier 618 A.2.31
Menke, Sven, Dr. Senior Scientist sven.menke 410 A.1.37
Morscheck, Patrick Student patrick.morscheck 503 A.2.15
Murnauer, Josef PhD Student josef.murnauer 453 A.2.28
Nisius, Richard, PD Dr. Senior Scientist richard.nisius 474 A.1.43
Okfen, Julia PhD Student julia.okfen 503 A.2.31
Park, Tae Hyoun, Ph.D. Postdoc tae.hyoun.park 559 A.2.23
Proto, Giorgia, Dr. Postdoc giorgia.proto 559 A.3.01
Rafanoharana, Dimbiniaina Soanasolo PhD Student dimbiniaina.soanasolo 265 A.2.30
Reiter, Justus Student justus.reiter 299 A.2.15
Resende, Francisco Student francisco.resende 559 A.2.23
Richter, Robert, Dr. Senior Scientist robert.richter 258 A.1.15
Rückwarth, Dario Student dario.ruckwarth 559 A.2.23
Saborido Patino, Alberto Student alberto.saborido 453 A.2.28
Schacht, Peter, Dr. Emeritus peter.schacht 228 A.1.15
Schielke, Anja Secretary anja.schielke 299 A.2.47
Schmidt, Elia PhD Student elia.schmidt 552 A.2.17
Schultheiß, David Student david.schultheiss 559 A.2.23
Schäfer, Tim Student tim.schafer 376 A.2.21
Soyk, Daniel Engineering daniel.soyk 374 B.2.FL2
Spitzauer, Luca Matthias PhD Student luca.spitzauer 220 A.2.19
Stonjek, Stefan, Dr. Senior Scientist stefan.stonjek 296 A.2.39
Tabriz, Meisam, Dr. IT meisam.tabriz 603 A.1.77
Tavizon Raigoza, Jairo Daniel Student jairo.tavizon A.2.28
Verbytskyi, Andrii, Dr. Senior Scientist andrii.verbytskyi 454 A.2.33
Verzeroli, Mattia, Ph.D. Postdoc mattia.verzeroli@mpp.mpg.de 559 A.3.01
Voevodina, Elena, Dr. Postdoc elena.voevodina 559 A.2.23
Weber, David Student david.weber 299 A.2.15
Wenke, Nina PhD Student nina.wenke 767 A.2.19
Wesely, Bastian Student bastian.wesely 503 A.2.15
Wurm, Lukas Student lukas.wurm 503 A.2.15
Zhou, Fan Student fan.zhou 503 A.2.15
Zimmermann, Jörg Engineering joerg.zimmermann 446 B.2.35

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