Transcript Document

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 Meeting
Paris SW Week, 8 Dec 05
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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[email protected]
http://cern.ch/atlantis
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Basics (1): Running JiveXML
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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.shtml
esp. for 10.0.x, it is recommended to check-out JiveXML-00-04-00
before running RecExCommon. Not needed in 11.0.x
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For general help, and suggestions, please contact:
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[email protected]
[email protected]
http://cern.ch/atlantis
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Basics (2): Atlantis (Java)
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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/AtlantisJava
cd AtlantisJava-*/cmt
cmt config
source setup.sh
gmake
atlantis
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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.
[email protected]
http://cern.ch/atlantis
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Basics (3): Atlantis GUI
Menu bar
Window Control
Interaction Control
Parameter Groups
Parameter
Output Window
[email protected]
http://cern.ch/atlantis
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Displays for Jets (1): XY projection
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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.
[email protected]
http://cern.ch/atlantis
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Displays for Jets (2): Color by Jet
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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.
[email protected]
http://cern.ch/atlantis
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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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[email protected]
http://cern.ch/atlantis
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Displays for Jets (4): fh projection
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Jets displayed in fh
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
[email protected]
http://cern.ch/atlantis
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Displays for Jets (5): fh projection
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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
ET
E
η =
Φ =
= 11
= 162.177 GeV
= 162.239 GeV
.028
292.469°
[email protected]
http://cern.ch/atlantis
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Displays for Jets (6): rZ projection
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As in XY, ‘Color
by Index of Jet’
indicated jet in
this projection
[email protected]
http://cern.ch/atlantis
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Displays for Jets (7): Legoplot
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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
[email protected]
http://cern.ch/atlantis
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Displays for Jets (8): Legoplot
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Again, option
‘Color by Index of
Jet’ is useful for
visual matching
[email protected]
http://cern.ch/atlantis
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Displays for Missing-ET (1): fh Proj.
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Missing-ET is displayed
in fh 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°
[email protected]
http://cern.ch/atlantis
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Displays for Missing-ET (2): XY Proj.
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Missing-ET is
displayed in XY
projection as
dashed line,
continuing outside
of the detector
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ETMis:
Sum-ET = 398.299 GeV
ET-Mis = 33.627 GeV
ETx-Mis = -29.062 GeV
ETy-Mis = -16.915 GeV
Φ = 210.201°
[email protected]
http://cern.ch/atlantis
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Displays for Missing-ET (3): Legoplot
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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
[email protected]
http://cern.ch/atlantis
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Future developments: AOD data
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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 fh 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 !
[email protected]
http://cern.ch/atlantis
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Taus
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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: BJets - Will likely be
modified ! E.g. shapes)
[email protected]
Not available currently.
For illustration only.
Likely to be modified.
http://cern.ch/atlantis
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Summary
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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)
[email protected]
http://cern.ch/atlantis
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