Jets and Missing-ET in the Atlantis Event Display

Jets and Missing-ET in the Atlantis Event Display

Qiang Lu, Juergen Thomas, Peter Watkins (Birmingham)Hans Drevermann (CERN)Andrew Haas (Columbia)Eric Jansen, Pieter Klok, Charles Timmermans (Nijmegen)Simon Dean, Nikos Konstantinidis, Zdenek Maxa (UCL)

Jet/Tau/ETMiss Group MeetingParis SW Week, 8 Dec 05

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Outline

Producing JiveXML output from Athena and starting up Atlantis

Display of Jets in various projections. Matching with Calo data

Display of Missing-ET Upcoming developments

- AOD objects including taus

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Basics (1): Running JiveXML

In default mode, Athena package JiveXML will dump xml format output file, to be read back into Atlantis (a Java standalone application)

Also possible to run over a large number of events and only display (produce xml files for) a few of them (JiveXML is now an AlgTool)

Default mode: Switch flag “doJiveXML=True” in RecExCommon/myTopOptions.py

Details on: http://www.hep.ucl.ac.uk/atlas/JiveXML.shtmlesp. for 10.0.x, it is recommended to check-out JiveXML-00-04-00 before running RecExCommon. Not needed in 11.0.x

For general help, and suggestions, please contact: atlantis.support@cern.ch

http://cern.ch/atlantis 4 Atlantis.Support@cern.ch

Basics (2): Atlantis (Java) Website has plenty of documentation & tutorials:

http://cern.ch/atlantis The latest Atlantis version is now available from the Offline releases

(package graphics/AtlantisJava):cmt co graphics/AtlantisJavacd AtlantisJava-*/cmt cmt config source setup.sh gmakeatlantis

Alias ‘atlantis’ available after setting up your athena environment (Alternative: reduced options and functionality: ‘atlantis_beginner’)

Running under Windows / Mac as a java application works (may require installing Java 1.5 SDK) Copy directory ‘AtlantisJava-*’ from release, start atlantis.jar

Note: Although Atlantis is inside the release, it has no dependency on other packages. It is a Java standalone application. Inclusion into release only to simplify distribution and code management.

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Basics (3): Atlantis GUI

Menu bar

Window Control

Interaction Control

Parameter Groups

Parameter

Output Window

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Displays for Jets (1): XY projection

XY projection. (Here: WW into 4jets from DC2 production)

Fisheye zoom used By default, calorimeter

cell energies are displayed as yellow areas

Fraction of cell outline filled is proportional to energy, normalised to sum of energy in detector (em / had). Option: normalise to overall energy.

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Displays for Jets (2): Color by Jet

Option for Calorimeter cell entries in XY projection to ‘Color by Index of Jet’: one colour for each jet index.

Note: All colours in Atlantis are freely adjustable ! Here, defaults are shown.

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Displays of Jets (3): Cuts

For cuts on Jet ET, go to Parameter Group ‘Cuts’ -> ‘Calo’. For filtering low-ET jets For selection of data type: ‘Data’

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Displays for Jets (4): projection

Jets displayed in projection as circles

Circle radius is proportional to ET (default)

Optional switch for circle size by Energy

Note: Here, electromagnetic calo cells are green, hadronic are red. Option: both yellow

http://cern.ch/atlantis 10 Atlantis.Support@cern.ch

Displays for Jets (5): projection

Now: ‘Color by index of Jet’ option selected. Matching of calo cells to jets can be clearly seen.

‘Pick’ on jet circles, jet data is written out:

Jet = 11 ET = 162.177 GeV E = 162.239 GeV η = .028 Φ = 292.469°

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Displays for Jets (6): Z projection

As in XY, ‘Color by Index of Jet’ indicated jet in this projection

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Displays for Jets (7): Legoplot

In Legoplot projection, Jets are displayed as shaded circles (grey by default) at the base plane. Default size 0.4 (adjustable)

Calorimeter data represented by yellow towers (optionally: different colour for had and em)

Allows for visual matching of calorimeter data with reconstructed jets

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Displays for Jets (8): Legoplot

Again, option ‘Color by Index of Jet’ is useful for visual matching

http://cern.ch/atlantis 14 Atlantis.Support@cern.ch

Displays for Missing-ET (1): Proj.

Missing-ET is displayed in projection as one dashed (grey) circle

By default, it’s MET_Final

Switchable to CaloETMis and MuonETMis

‘Pick’ on dashed circle, Missing-ET value is written out:

ETMis: Sum-ET = 635.664 GeV ET-Mis = 45.480 GeV ETx-Mis = 44.488 GeV ETy-Mis = -9.446 GeV Φ = 348.012°

http://cern.ch/atlantis 15 Atlantis.Support@cern.ch

Displays for Missing-ET (2): XY Proj.

Missing-ET is displayed in XY projection as dashed line, continuing outside of the detector

ETMis: Sum-ET = 398.299 GeV ET-Mis = 33.627 GeV ETx-Mis = -29.062 GeV ETy-Mis = -16.915 GeV Φ = 210.201°

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Displays for Missing-ET (3): Legoplot

In Legoplot, Missing-ET is a (yellow) line at the back of the plot, with height proportional to Missing-ET value

Value always written out with energy axis scale

http://cern.ch/atlantis 17 Atlantis.Support@cern.ch

Future developments: AOD data

Taus are currently not displayed in Atlantis (only if they are inside the Jet container, but then just as jets).

Currently work ongoing for displaying all AOD data (already in: missing-ET, jets, to follow: electron, muons, photons, taus, b-jets, etc.)

First step: include data in xml file – already done Next step: Display in projection as circles (other

shapes/ colours) with same ‘Pick’ functionality. Add cut options and extended data dumps (e.g. tau

likelihoods). Add to Legoplot, and other projections Ready soon. A first impression is shown on the next

slide. Your ideas about this are very much welcome !

http://cern.ch/atlantis 18 Atlantis.Support@cern.ch

Taus

Tau is a light blue circle

Note: All Tau’s in TauJetCollection are shown. Grey circles are KtTowerParticleJets. AOD Overlap still very visible. Reasonable cut needed.

TauJet = 2 ET = 163.370 GeV E = 267.832 GeV charge = 0.0 num Tracks = 3 η = -1.078 Φ = 148.016°

(Red: Electrons, yellow: Muons, dark blue: B-Jets - Will likely be modified ! E.g. shapes)

Not available currently.For illustration only. Likely to be modified.

http://cern.ch/atlantis 19 Atlantis.Support@cern.ch

Summary

Jets can be inspected in the Atlantis Event Display in many projections, shown as circles or by colouring calorimeter cells, cuts can be applied

Missing-ET is also displayed in many projections. Switchable to Muon/Calo-only values

Development for displaying more AOD contents, including taus, is on the way

Up-to-date Atlantis is now inside releases Also new: Use of interactive Athena to re-run

secondary vertexing (see Atlantis talk in PAT meeting yesterday)