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ATLAS+CMS discussion of “Computers in the search for the Higgs Boson” for JCSS

ATLAS+CMS discussion of “Computers in the search for the Higgs Boson” for JCSS. Ian Fisk (FNAL) + Norman McCubbin (RAL) 26 th November 2013. Where have we got to…???. As last time (October): not as far advanced as we hoped for…  We have:

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ATLAS+CMS discussion of “Computers in the search for the Higgs Boson” for JCSS

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  1. ATLAS+CMS discussion of “Computers in the search for the Higgs Boson”for JCSS Ian Fisk (FNAL) + Norman McCubbin (RAL) 26th November 2013

  2. Where have we got to…??? • As last time (October): not as far advanced as we hoped for…  • We have: • Outline, attached to indico page: fewer missing names than last time; • SVN repository: has been “exercised” a bit. Ian has updated (?) the (rather old) latex version used by SVN. • cms-atlas-jcss mailing list. (PLEASE SUBSCRIBE, if you haven’t done so!) • There’s now a twiki page (email 23rd November) for other material that may be interesting or useful: https://twiki.cern.ch/twiki/bin/viewauth/CMSPublic/JointJCSSPaper ATLAS+CMS:JCSS 25 Oct 2013

  3. Introduction: Chapters 1 +2 • There has been some discussion of what’s in Chapters 1+2, and in what order. • Very rough text and ideas are in the SVN repository (under ’overview’ – Ch2). • Chapter 1 will contain: • Introduction to particle physics and “Higgs” at a level suitable for the “numerate (eg computer scientist) lay-person”. • The fact that pp collisions have many possible outcomes, and some (eg Higgs production) are very rare. (Rate= sigma x Lumietc) Also the idea that the mass of a short-lived particle can be inferred from measurement of its decay products. (“E=mc2” etc) • Sufficient introduction and key parameters of LHC machine and the detectors to motivate: • Discussion of the LHC “computing challenge(s)”. ATLAS+CMS:JCSS 26 Nov 2013

  4. Introduction: Chapters 1 +2 • Chapter 2 will contain: • A brief description of the “flow” from either real LHC collisions or simulation through to “publication” and/or physics results. • Hence the following terminology and ideas get introduced in this chapter, but detailed descriptions will come in the later chapters: • Collision rate, pile-up, simulation (Monte Carlo), DAQ and trigger, data rates and volumes, on-line, off-line, reconstruction, calibration, alignment, distributed processing and analysis, physics analysis, internal checking of potential results. ATLAS+CMS:JCSS 25 Oct 2013

  5. Introduction: Chapters 1 +2 • Flavour of (so not final) figures or pictures that will be in Chapters 1 +2 : ATLAS+CMS:JCSS 25 Oct 2013

  6. Introduction: Chapters 1 +2 • NOT FINAL figures or pictures that will be in Chapters 1 +2 : ATLAS+CMS:JCSS 25 Oct 2013

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