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2011 Masterclass Debriefing: ATLAS W-path measurement

2011 Masterclass Debriefing: ATLAS W-path measurement. Content Students’ Results Website statistics Brief analysis of feedback Ideas for development. Interesting points What makes a Masterclass “successful”? How can we improve this measurement?

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2011 Masterclass Debriefing: ATLAS W-path measurement

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  1. 2011 Masterclass Debriefing: ATLAS W-path measurement Content Students’ Results Website statistics Brief analysis of feedback Ideas for development • Interesting points • What makes a Masterclass “successful”? • How can we improve this measurement? • The better preparation the better the Masterclass ... • Videoconference !!!

  2. Students’ Results 1 – brief refreshing • Structure of the proton • Student action? • Identify elementary particles (electron (e-), positron (e+), muon (μ-), antimuon (μ+) neutrinos) • Classify events • What to measure? • Number of possible W events with e-, e+, μ+, μ- • What to calculate? • Why? • Explore/Proof the inner structure of the proton • Search for the Higgs • Student action? • Search for candidates with two W’s • What to measure? • Number of WW events • Why? • Search for interesting new physics

  3. Students‘ Results 2 ________Weighted Average ________raw ratio from ATLAS derived by the numbers of W’s in “Measurement of the W lnu and Z/gamma*ll production cross sections in proton-proton collisions at sqrt(s)=7TeV with the ATLAS detector”

  4. Students‘ Results 3

  5. Students‘ Results 4

  6. Website statistics 1 Why that many? Unique Visitors: 3,594 Number of Visits: 6,015 Number of visited pages: 44,573 (per visit) (7.4) Bandwidth: 113.1 GB • Tutors preparation • Students came back to or new guests reached the website • Besides using DVD’s institutes worked with website as well Data valid for the website www.cern.ch/kjende/*.htm and the period between March 01 and March 31 2011

  7. Website statistics 2

  8. Website statistics 3

  9. Website statistics 4 Browsers Top 5 Connected to site from • Direct address: 54% • Links from external page: 29% • Links from Search Engine: 17% • Google: 95% Firefox 54% Internet Explorer: 26% Google Chrome: 8% Apple Safari: 8% Opera: 3% Downloads Top 3 HYPATIA: 626 MINERVA: 623 Exercise2: 423

  10. Brief analysis of feedback • F1: • technical problems (MINERVA crashed) • exercise introduction is very long with difficult definitions • time problems • F2: • Instructions badly organized onseparate pages; • idea of the measurement is very attractive • it’s nearly impossible in the given time to work out the Higgs finding • students can distinguish between signal and background but they cannot interpret the W+/W- ratio • problem: getting students in pairs to download different event samples; size restrictions; save procedure; • it’s great to have real LHC data • F3: • event display program is not executable from DVD (problems in unzipping procedure) • F4: • tutors needed a few hours to get into the matter; it was exciting

  11. Ideas for development Optimize the procedure: executable MINERVA on the DVD + organizing data samples in a specific event folder (DVD) I will think about shorter instructions. We will offer better step by step interpretations of both ratios. We will prepare better documentation for tutors. Prepare different data samples for each venue in order to more benefit from combining results (thus we will really see the statistic uncertainty shrinking) Replace simulated Higgs events with real WW events Offer possibility to students that work on the path at home to discuss and interpret their results (by creating an interactive platform) I will do a didactic survey on the Masterclasses in 2012: we need to know when we call Masterclasses “successful” (students succeed in measurement, students have good feelings after attending Masterclasses, they achieved their learning objectives, ... )

  12. Ideas for development Room for your feedback – thank you!

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