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Update on RAL Masterclass

Update on RAL Masterclass. Reminder: RAL Masterclass based on particle identification in ATLAS Each group of students has to classify 20 events in the categories W e/ , Zee/, jet background events using Atlantis

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Update on RAL Masterclass

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  1. Update on RAL Masterclass • Reminder: RAL Masterclass based on particle identification in ATLAS • Each group of students has to classify 20 events in the categories We/ , Zee/, jet background events using Atlantis • One event contains a H22e event. There’s a prize for the group who finds it • RAL Masterclass now being renamed to Minerva • Masterclass INvolving Event Recognition Visualised with Atlantis • Roman name of Greek goddess Athena • We thought we need proper name as there is quite some interest in the exercise • Now it’s more of a joint venture with Birmingham (Mark Stockton, Pete Watkins) • They are taking care of the Atlantis part • Here’s our new website: • https://twiki.cern.ch/twiki/bin/view/Atlas/MinervaMasterclass • From here you can download the new version and find all the needed information and accompanying papers (all updated)

  2. What’s new to the exercise • Overhaul of Masterclass based on the feedback we received so far • Main changes • New event selection done • Each group starts with one signal event • First events are more easy and then they become successively more complicated • More signal events per group, last year we used ~50% background events, now it’s reduced to ~65% • Events now put in individual zip files a 20 events plus partly reduced size by storing less information in atlantis xml files • ~110 MB for atlantis version containing 15 groups • ~150 MB for atlantis version containing 20 groups • ~180 MB for atlantis version containing 25 groups • To be compared to ~470 MB in previous version • All 3 version available from the web site

  3. New features • Missing ET vector in x-y view now visualises the magnitude Large ETmiss Little ETmiss

  4. New features • Muon tracks now visualised as combined tracks (easier to spot) Muon tracks For comparison, old version showed only muon segments

  5. Conclusions • Everything is ready for use of this years Masterclass • https://twiki.cern.ch/twiki/bin/view/Atlas/MinervaMasterclass • Default is to display run numbers which indicate event type. Cheat sheet for tutors with correspondence and number of location of Higgs events available on request (some groups are worried students would find it. • If you prefer to hide the run number we can tell you how (switch available in configuration file) • Possibility to download and open Atlantis directly from web page • online demo: http://atlas-minerva.web.cern.ch/atlas-minerva/ • Please send us your feedback if you are using this Masterclass • We are already aware of several universities who will use the exercise this year

  6. Outlook • If you run from server provide result sheet to be typed in on the computer and then display of correct results for comparison and automatic analysis of results from all groups • Some more work in progress to add more functionality e.g. for undergrads or if you have more time for masterclass • Use invariant mass from two tracks to confirm you found a Z

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