Session 2

19 Nov 2008

Question 1: You are planning to start analysis, where would you go to look for information

  1. starts in http://cms.cern.ch/iCMS/
  2. says would go to analysis groups and try to find some links
  3. goes to physics - takes times to find group pages as not visible in the screen
  4. is adviced to scroll down
  5. goes https://twiki.cern.ch/twiki/bin/view/CMS/B-Physics
    1. sees an example of active analyses where could get some inspiration
    2. clarifies that should really learn how to write code, thinks this is not the page
  6. back to icms, goes to workbook https://twiki.cern.ch/twiki/bin/view/CMS/WorkBook
    1. reads the contents down to "how to make an analysis"
  7. goes to https://twiki.cern.ch/twiki/bin/view/CMS/WorkBookMakeAnalysis
    1. reads the page and thinks this would be a good starting point

Question 2: You will have muons in your analysis. What the muon data object contains, find the information.

  1. says it is detector based object and related to POG
  2. stays in the WorkBOok to see if there is something related to muons
    1. sees particle candidates and say might have a look
  3. goes to https://twiki.cern.ch/twiki/bin/view/CMS/WorkBookParticleCandidates
    1. follows https://twiki.cern.ch/twiki/bin/view/CMS/WorkBookParticleCandidates#RecoCands
    2. finds the figure
    3. thinks that there is a class reco::cndidate from which all the object inherit
    4. understands that needs to find the class documentation
    5. scrolls through the page, goes with mouse over reco::Candidate but this is not a link
    6. click on RECO
  4. https://twiki.cern.ch/twiki/bin/view/CMS/RECO
  5. follows https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideRecoDataTable
    1. scrolls through the page
    2. thinks this does not contain the docs on the class itself
    3. gets a hint that it does
    4. reads the comlumn titles: InputTag Containers Description
    5. looks with ctlr-F for muons
    6. clicks on reco::TrackCollection, is warned that the link is slow
  6. comes to http://cms-service-sdtweb.web.cern.ch/cms-service-sdtweb/doxygen/CMSSW_2_1_12/doc/html/dd/d5b/classreco_1_1Track.html
    1. says that there are some methods, and is not yet familiar with all the names, but think that with this information can get the information needed

Question 3: Find a useful example code to access the muon data.

  1. thinks that there is tutorial
  2. goes to https://twiki.cern.ch/twiki/bin/view/CMS/WorkBook
    1. scrolls down to lowert part of the page
    2. does not see muon analysis page (even if on the screen)
  3. goes to tutorials https://twiki.cern.ch/twiki/bin/view/CMS/Tutorials
    1. thinks that these are generic tutorials which might contain useful example but is not a collection of examples
  4. back to workbook https://twiki.cern.ch/twiki/bin/view/CMS/WorkBook
    1. looks in the left bar
  5. goes to https://twiki.cern.ch/twiki/bin/view/CMS/WorkBookUsage
    1. scrolls down, goes back
  6. again in https://twiki.cern.ch/twiki/bin/view/CMS/WorkBook
    1. looks for exampl (with ctrl-F)
    2. finds Example analysis of CRAFT data, not interested
    3. tells that the keyword she looks for Example
    4. says that "Introductory framework tutorial" could contain a link
    5. keywords example + tutorials but the tutorial page gave generic tutorials and example give a very specific example
    6. is adviced to read again the contents - starts in detail
    7. sees Analysis Tool Starterkit
  7. goes to https://twiki.cern.ch/twiki/bin/view/CMS/WorkBookPAT
    1. reads through - says that this is important to know (of setting up env)
    2. does not see examples of muons or jets of what ever
    3. scrolls down
    4. scrolls up to the page, reads the intro which says that brings to physics level plot in 60 mins and thinks this should be the page
    5. see producing pat layer-1 objects, sees link to startedkit tutorial
  8. goes to https://twiki.cern.ch/twiki/bin/view/CMS/WorkBookAnalysisStarterKit
    1. sees "physics histograms" and even muon in the figure
    2. says she would try this page

Question 3: You would like to know if other have done similar analysis in physics working group. Where would you go to look for information?

  1. would go to b-physics and look for links to previous analysis but thinks this is not the correct place to look for software oriented stuff
  2. looks in the WorkBook, thinks there is nothing on a specific analysis
  3. looks under "analysis tools", scrolls up and down
  4. asks if people already having done analysis really provide the information and is explained that some of the analysis code is common to a group and resides somewhere in cvs
  5. thinks that starts with b-physics but having seen the page thinks there is not many much
  6. goes to https://twiki.cern.ch/twiki/bin/view/CMS/B-Physics (still in a tab)
  7. goes to https://twiki.cern.ch/twiki/bin/view/CMS/BphysicsAnalysisTopics
    1. thinks of getting an overview who did what
    2. finds a list of analyses
  8. goes to https://twiki.cern.ch/twiki/bin/view/CMS/UpsilonProduction
    1. thinks tha cadi is a document system
  9. back to https://twiki.cern.ch/twiki/bin/view/CMS/BphysicsAnalysisTopics
    1. thinks that this page give docs in generic terms but gives info on physics terms but not how the analysis was done software-wise
  10. back to https://twiki.cern.ch/twiki/bin/view/CMS/B-Physics
    1. thinks PAG page is not the best place to look
    2. scrolls down and finds tools and thinks that maybe one of those could be help
  11. goes to https://twiki.cern.ch/twiki/bin/view/CMS/BphysicsSoftware
  12. follows the link to cvs CMSSW/HeavyFlavourAnalysis
  13. thinks that finally PAG was the place to go

-- KatiLassilaPerini - 26 Feb 2009

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