Simulation v0.1

1
Simulation v0.1

• IceCube Collaboration Meeting
• Uppsala, Sweden

2
Overview

• Goal is to simulate cosmic ray muon events
• Development release not for serious physics
  analysis
• Verify that offline tools work
• Establish a baseline for continuing simulation
  development
• Provide starting point for development of
  reconstruction tools (at a pre-physics level)
• Allow preliminary comparisons to amasim

3
Generator

• Corsika file reader
• No attempt to incorporate corsika itself into
  IceTray at this time
• Cosmic ray spectrum on the atmosphere
• EM air shower particles at ground level
• Muons at ground level
• Output is I3Particles in IceTopParticleMap
• Names in multimap refer to primary particle all
  from same primary have same name
• Particle parentID and primaryID are set
• Primary particle is recorded in PrimaryMap with
  same name as in IceTopParticleMap
• Ready now?

4
IceTop Simulation

• Bartol is responsible for generating IceTop
  response from records in the IceTopParticleMap
• Peters status report
• Trigger records?

5
Propagator

• MMC for muon propagation
• Takes particles from IceTopParticleMap, checks
  for muon particle type
• Propagates muons through active volume, writes
  particles as they exist InIce in InIceParticleMap
• ParentID refers to version of particle in
  IceTopParticleMap
• Names for multimap are identical to those in
  IceTopParticleMap
• Mainly ready now, but possibly bug in Java/C
  interface?

6
Hit Constructor

• Takes muon tracks from InIceParticleMap as input
• Uses geometry records read in by I3DB
• Writes photons reaching surface of PMT based on
  results provided by PSI service
• Glass/gel effects included in table efficiency
  files, but not quantum/collection efficiencies
• Written to I3MCPhotonVect in I3OMResponse
• ParentID is taken from muon particleID
• Provides time series (possibly extra info such as
  wavelength?)
• Ready now but may need some physics-level
  tweaks (IR cutoff, etc.)

7
ROMEO

• Uses photon time series from I3OMResponse for
  input
• Will write a photoelectron series to
  I3MCHitSeries as an intermediate result
• Writes a PMT waveform to an as-yet-nonexistent
  field in I3MCOMResponse as output
• Interface is a whole function? a value given a
  time?
• Will not include effects like saturation at this
  stage of development
• Relative geometry of track, OM available, but not
  actual flight path or actual emission point of
  photon
• Released, needs integration into IceTray

8
DOMSimulator

• Will use voltage series from ROMEO as input
• Output is a DataReadout consisting of one or more
  Launches
• IsRaw will return true
• Responsible for controlling execution of ROMEO?
• End of October

9
(Simple) InIce Trigger

• Will look at the OMResponses and form a trigger
• Output will be written to TriggerDict
• Will be written regardless, with a DidPass field
• Algorithm still TBD?

10
Feature Extraction

• Will provide a DataReadout representing
  synthesized DOM output
• Based on raw DOM DataReadout
• IsRaw will be false