Simulation in IceCube

1
Simulation in IceCube
Stephan Hundertmark Stockholm University
Simulation in Icecube
2
Project Year 2 - Plans

• Near term
• IceCube Simulations using AMANDA software
• Extending AMANDA software for IceCube
• Parallel / long term
• Development of IceCube simulation software
• Event generators
• Particle propagators
• Photon field / detector simulation
• other ideas

Simulation in Icecube
3
Project Year -2 Deliverables

• IceCube extensions to AMANDA software
• IceCube simulations with AMANDA software setup

Simulation in Icecube
4
Project Year 2-Milestones
06/30/03 Setup of simulation chain with AMANDA
software 12/31/03 Release 1 of IceCube
extensions to AMANDA software
Simulation in Icecube
5
Simulation Overview
1.) Generate events caused by - Atm. air
showers - e-, ?-, ?-neutrinos (SN, AGN, GRB,
atm-n, WIMPS) - exotic particles
(Monopoles,...) 2.) Propagate leptons 3.)
Propagate photons 4.) Simulate detector response
Simulation in Icecube
5
6
Simulation Chain
Corsika corama
photonics
PTD
MMC
amasim
f2k
(propmu)
nusim tauola casim anis
Generators
Detector simulation
Lepton propagation
Simulation in Icecube
6
7
Air Shower Generator

• Corsika
• Simulates extensive air showers
• Can interface to different hadronic interaction
  models
• (QGSJet, Sibyll, Venus, DPMJet,...)
• De facto standard in CR physics
• Actively developed
• Issues
• Coincident events
• Electrons at surface (IceTop)
• Size of output and speed of simulation

Simulation in Icecube
7
8
Neutrino Generator(s)

• Separate generators for the different flavors
• Muon neutrino generator (nusim)
• Tau neutrino generator (tauola)
• Electron neutrino generator (casim)
• Issues
• Missing uniformity / different philosophies
• Very high energy extension currently missing

Simulation in Icecube
8
9
Lepton Propagation

• MMC
• Modern and well tested propagation tool
• Issues
• Energy depositions at high energies (LPM effect)
• Energy scaling of secondary energy losses

Simulation in Icecube
9
10
Photon Propagation

• PTD and Photonics
• Tracking of photons done once massively
• Optical Module response stored in
  multidimensional tables
• PTD assumes uniform ice quality
• Photonics propagates photons through ice of
• different quality
• Issues (Photonics)
• Size of tables and speed of interface to
  detector simulation

Simulation in Icecube
10
11
Detector Simulation

• AMASIM
• Interfaced to PTD and Photonics
• Electronic simulation follows AMANDA setup
• Can be used for basic IceCube simulations (TWR)
• No IceTop simulations
• Missing
• basic steering setup
• DOM, DOMHUB and Trigger implementation

Simulation in Icecube
11
12
Action Items

• At IceCube meeting next week form working groups
  for
• the setup of IceCube simulation chain
• Run the simulation according to needs by
  analysis group
• Start developing IceCube specific software using
  
• IceCube software frame
• New detector simulation program
• Interfaces for generators and propagation
  programs

Simulation in Icecube
12
13
Personel
Non-US Institute FTE Chiba 2.5
DESY 0.25 Stockholm 1.25 Mons
0.4 Uppsalla 0.5 Total
4.9
US Institute FTE CAU
2.4 Penn 1.8 Bartol 1
Maryland 0.8 Madison 4 Total
10
Simulation in Icecube
13
14
Summary

• An initial, but sufficent simulation can be
• performed with smaller extensions to the
• existing simulation tools
• In parallel the existing programs will be
  transfered
• to the IceCube environment
• New development is needed for detector
  simulation,
• including IceTop
• Manpower is availible

Simulation in Icecube
15

Simulation in Icecube