Maria Grazia Pia, INFN Genova

Low Energy Electromagnetic PhysicsLow Energy Electromagnetic Physics

Maria Grazia PiaINFN Genova

S. Chauvie, A. De Angelis, G. Depaola, R. Giannitrapani, A. S. Howard, V. Ivanchenko, F. Longo, F. Marchetto, R. Nartallo, P. Nieminen, M.G. Pia,

G. Santin, A. Solanoon behalf of the Geant4 LowE Electromagnetic Working Group

Budker Inst. of PhysicsIHEP ProtvinoMEPHI Moscow Pittsburg University

ESTECESTEC, 13-15 June 2001

http://www.ge.infn/geant4/lowE

Maria Grazia Pia, INFN Genova

ESA Space Environment & Effects Analysis Section

X-Ray Surveys of Asteroids and Moons

Induced X-ray line emission:indicator of target composition(~100 m surface layer)

Cosmic rays,jovian electrons

Geant3.21

ITS3.0, EGS4

Geant4

Solar X-rays, e, p

Courtesy SOHO EIT

C, N, O line emissions included

How the project started

BepiColombo mission to Mercury

Maria Grazia Pia, INFN Genova

How it evolved

Low energy models (250 eV to 100 GeV) for electrons and photons, based on the LLNL database

Extensions to lower energies foreseen Alternative models foreseen Models for positrons foreseen

Low energy models for positive charged hadrons Ziegler and ICRU databases and parametrisations

Low energy models for negative charged hadrons Unique to Geant4 Based on experimental data (where available) + theoretical model

Low energy models for positive charged ions Negative ions foreseen

Polarised models Compton already implemented, other in progress

Maria Grazia Pia, INFN Genova

Low energy e.m. extensions

Fundamental for space and medical applications, neutrino experiments, antimatter spectroscopy etc.

Low energy hadrons and ions models based on Ziegler and ICRU data and parameterisations

Barkas effect:models for antiprotons

e, down to 250 eV (positrons in progress)

Maria Grazia Pia, INFN Genova

Top level class diagram

Maria Grazia Pia, INFN Genova

Design: electrons

Maria Grazia Pia, INFN Genova

Design: photons

Maria Grazia Pia, INFN Genova

Hadrons and ions