Fresh news & review [Dec 2019] : a CERN courrier article on Adapting to exascale computing

ATLAS data flow, from detectors to publication

• Processing LHC data, a video prepared around the Higgs discovery time. Numbers are a bit out of date, but the setup isn't ! 
• From raw data to physics, 1.Record, 2.Reconstruct, 3.Analyse  are (recorded) summer students lectures by A.Sfyrla. Slides 22 and 25 of the lecture 1 summarise events lifetime and rates. 
• Big data meets big science: an overview poster of the ATLAS data processing chain, prepared for the open days. Step by step:
  • Simulation: "defending our lives", a series 3 of blog posts by Zach Marshall .  
  • Data taking: start of run 2 in the ATLAS control room. The rotating event at the end is in CDS .
  • Event selection: the whole ATLAS trigger in one prize winning poster (EPS 2019) and few older blogs
  • Dealing with the data avalanche: ATLAS news
• A few ATLAS news address event displays . A gallery of ATLAS Run 2 events. "Picturing Particles" is a video story about how HEP data vizualisation developed. 

Data processing, from the CERN data center to scientists laptops

At CERN

• A specific web site was prepared for the Open Days 2019. One page summary & key numbers are on a flyer . The drone tour of the data center is available in CDS and on YouTube . 
• Current numbers can be found in the CERN data center Key information (October 2019).  A live dashboard features computing, storage and network resources.
•  Most of the animations shown to data center visitors are in CDS  

World wide

• WLCG site map and, behind the scenes... the LhcOne network map .
• Big data meets big science: an overview poster on how ATLAS processes its data, prepared for the Open days
• Example, the French cloud:  a T2 =  MUST platform @LAPP Annecy / the T1 =  virtual visit of the CC IN2P3, Lyon / interview of the responsable technique (in French)

Numbers ?

• Public: Overview of the ATLAS distributed computing system, Proceedings of the CHEP 2018 conference
• ATLAS insiders only: ATLAS report to the C-RSG, April 2019

Higgs boson

Discovery

• The discovery seminar: slide 12 of Fabiola Gianotti's talk acknowledges the importance of computing. 
• How the grid computing helped CERN to hunt the Higgs: a 2012 science node article
• Higgs celebration and popularity opened the door to two ATLAS citizen science projects

Images

• Animated Higgs discovery plots (2011, 2012) are on CDS
• 2019 H into 4 leptons mass distribution : ATLAS-CONF-2019-025 (fig 4)
• 2019 H in gamma gamma mass distribution : ATLAS-CONF-2019-029 (fig 3)
• The iconic 2012 Higgs event display
• 4 ways the Higgs boson can be produced at the LHC:  Feynman diagrams . The way it decays :  decay pie . 

Progress with Run2

• "The LHC is an everything factory", slides 1-9 of a talk by Andreas Hoecker (EPS 2019).  All together now: spring 2019 state of the art
• CERN news on progress with the Higgs (in particular ttH and Hbb evidence). ATLAS briefings also describe the search for new physics.
• How many Higgs did ATLAS detect in each channel ? :  check  here  table 4 of a recent publication. 

Upgrades

Physics

• Exploring the scientific potential of LHC-HL: the Granada workshop. 
• Summer 2019 overview: CERN courrier article (and links therein).

Technology

• Run 3 & LHC-HL preparation: in ATLAS and at CERN
• HEP in the cloud computing and open science era: a recorded seminar by Lukas Heinrich
• Time to adapt for big data: radical changes needed, a CERN courrier article (march 2018)