UHE Simulation Efforts @ Chiba UHE Simulation Efforts @ Chiba U. U. Motivation Motivation Java class structure Java class structure Provided Methods Provided Methods Future Plan Future Plan Shigeru Yoshida Shigeru Yoshida Dept. of Physics Dept. of Physics CHIBA Univ. CHIBA Univ. Laguna Beach 2003 Please integrate it To YOUR library!!
17
Embed
UHE Simulation Efforts @ Chiba U. Motivation Motivation Java class structure Java class structure Provided Methods Provided Methods Future Plan Future.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
InteractionsMatrix.javaGenerate matrix of (logE), d/dy(logE)
Laguna Beach 2003
Laguna Beach 2003
decay/Decay.java
Calculate weak decay matrixWl
MuDecayMatrix.java TauDecayMatrix.java
Laguna Beach 2003
propagation/
PropagationMatrix.javaResolves the transport equation numerically
Build the transfer matrix for propagation overInfinitesimal distance dX[g/cm2], first
e
e
e/
e/
Weak
Weak
Weak
Inco
min
gProducts
Weak
Weak
Weak
Cascades
Cascades
Decay DecayWeak
Pair/decayBremss Pair Pair PhotoNucl.
PhotoNucl.DecayPair Pair
PairBremssDecay
DecayWeak
Laguna Beach 2003
Application Example of the PropagationMatrix
Laguna Beach 2003
Laguna Beach 2003
propagation/
PropagationMatrix.javaHas a function of switching on/off any interaction channel
bit6 bit5 bit4 bit3 bit2 bit1 bit0bit7
CCNCe+e-+-+-
Knock-onBremssPhoto-Nucl ->
Laguna Beach 2003
A factor of 2 enhancementDue to the heavier lepton production
Laguna Beach 2003
numRecipes/
Integration.javaNumerical Integration Methods
• Extended Trapezoidal rule• Romberg Integration
Interpolation.javaPolynomial Interpolation
SpecialFunctions.javaGaussian, Poisson, Gamma Function etc..
RandomDouble.java
Uniform DeviatesBased on “Mersenne Twister”Period 2^19937-1 623 dimensional equi-distribution
Future plan… Integration with YOUR Future plan… Integration with YOUR code!!code!!
Detector MC on the same base infrastructure.Detector MC on the same base infrastructure. Photon Propagator. Photonics? It needs to be faster and capable of LAEGER target volume for UHE as many events Photon Propagator. Photonics? It needs to be faster and capable of LAEGER target volume for UHE as many events OUTSIDEOUTSIDE the instrumental the instrumental
volume are likely to be triggered.volume are likely to be triggered. Events are horizontal/downward-going. Needs realistic mapping of the polar ice configuration in the simulation.Events are horizontal/downward-going. Needs realistic mapping of the polar ice configuration in the simulation. Reconstruction. UHE events are associated with many cascades which would cause sizable fluctuation.Reconstruction. UHE events are associated with many cascades which would cause sizable fluctuation. May need to run Geant4 for full simulation of UHE cascades and to be implemented in this library.May need to run Geant4 for full simulation of UHE cascades and to be implemented in this library. LET ‘S WORK TOGETHER!!LET ‘S WORK TOGETHER!!