TSCVDC CFD Team CERN presentation CFD at CERN

TS/CV/DC CFD Team CERN presentation & CFD at CERN TS/CV/Detector Cooling - CFD Team CERN June 24 th 2005 Michele Battistin JCOP meeting 17 September 2004 1

TS/CV/DC CFD Team AGENDA 09. 30 CERN presentation 09. 45 CFD activity presentation 11. 15 visit to the computer center 513 12. 00 visit to ATLAS cavern (Andreas Hirstius tel: 74503) (Geoffrey Tappern tel: 164566) 13. 00 lunch 14. 00 -16. 00 discussions JCOP meeting 17 September 2004 2

TS/CV/DC CFD Team CERN European Organization for Nuclear Research • Founded in 1954 by 12 countries • Today: 20 member states • More than 7000 users from all over the world • ~1000 MCHF / Year budget 1954: Convention establishing the Organization - original signatures M. Battistin 2004: The 20 member states June 2005 – CERN & CFD Presentation 3

TS/CV/DC CFD Team Why accelerators? To investigate Particle Physics Particle physics looks at matter in its smallest dimensions Accelerators M. Battistin Microscopes Binoculars June 2005 – CERN & CFD Presentation Optical and radio telescopes 4

TS/CV/DC CFD Team What happened an instant after the Big Bang? M. Battistin June 2005 – CERN & CFD Presentation 5

TS/CV/DC CFD Team How can we go back the time? 15 Billions of years ACCELERATOR ENERGY 1 Billion of years 330. 000 years 100 seconds 0. 1 Nanoseconds (10 -10) 10 -34 seconds PS (’ 59) LEP (’ 89) LHC (’ 07) 10 -43 seconds M. Battistin June 2005 – CERN & CFD Presentation 6

TS/CV/DC CFD Team The “bricks” of the matter M. Battistin June 2005 – CERN & CFD Presentation 7

TS/CV/DC CFD Team We don't know everything! Why three generations? Supersymmetry? The LHC will help solving all these unsolved mysteries Higgs boson? M. Battistin June 2005 – CERN & CFD Presentation 8

TS/CV/DC CFD Team Methods of particle physics 1) Concentrate energy on particles (accelerator) 2) Collide particles (recreate conditions after Big Bang) 3) Identify created particles in Detector (search for new clues) M. Battistin June 2005 – CERN & CFD Presentation 9

TS/CV/DC CFD Team CERN accelerators structure acceleratore LHC CERN secondo sito acceleratore SPS CERN sito principale M. Battistin June 2005 – CERN & CFD Presentation 10

TS/CV/DC CFD Team LHC Large Hadron Collider 1230 magnets will be installed in the 27 km long tunnel - They will run at -271˚C M. Battistin June 2005 – CERN & CFD Presentation 11

TS/CV/DC CFD Team At 4 points the particles are forced to collide CMS ATLAS LHCb Alice M. Battistin ATLAS June 2005 – CERN & CFD Presentation LHCb 12

TS/CV/DC CFD Team Detectors are used to “take a picture” to the particles M. Battistin June 2005 – CERN & CFD Presentation 13

TS/CV/DC CFD Team Higgs signature at the LHC The two proton beams at the LHC will collide head-on 800 million times per second We expect only 1 Higgs in 1, 000, 000 events M. Battistin June 2005 – CERN & CFD Presentation 14

TS/CV/DC CFD Team Evolution of CERN computing needs CPU capacity 1998 -2010 Other experiments Moore’s law Jan 2000: 3. 5 K SI 95 M. Battistin LHC experiments June 2005 – CERN & CFD Presentation 15

TS/CV/DC CFD Team The GRID: a possible solution to CERN computing needs The LHC computing GRID is a project funded by the European Union. The objective is to build the next generation computing infrastructure providing intensive computation and analysis M. Battistin June 2005 – CERN & CFD Presentation 16

TS/CV/DC CFD Team Computational Fluid Dynamic Team at CERN JCOP meeting 17 September 2004 17

TS/CV/DC CFD Team M. Battistin June 2005 – CERN & CFD Presentation 18

TS/CV/DC CFD Team CFD team mission The mandate of this team is to provide assistance to the LHC experiments in the design and prototype phase and support all other CERN units too. CERN mandate is also to give training opportunity to students and young professionals (especially i the physics, engineering and computer science fields) coming form the member states to spread then, this knowledge in the origin states. The Team has formed tens of engineers to CFD in since last 12 years. M. Battistin June 2005 – CERN & CFD Presentation 19

TS/CV/DC CFD Team CFD team resources ü 6 young engineers coming form the member states for short medium periods (6 months – 3 years) ü Engineering PC Pentium 4 - 2 GRam - 2, 8 GHz for development ü A cluster of 20 Itanium 64 bit, double CPU machine for calculation ü Limited access to a larger Itanium cluster (Open. Lab) ü ADAPCO® Star. CD software licenses • 12 development licenses • 104 calculation licenses M. Battistin June 2005 – CERN & CFD Presentation 20

TS/CV/DC CFD Team CFD project in 2004 -2005 Ø Model dimension is a compromise between accuracy and time to result Ø Most of the projects take about 1 month of calculation time per case Ø A project has an average of 6 cases M. Battistin June 2005 – CERN & CFD Presentation 21