Applications of Geant4 Geant4 Mini-Tutorial Hebden Bridge 15 September 2007 Joseph Perl, SLAC (mostly stolen from a talk by Makoto Asai)
Kernel I - M.Asai (SLAC)2BaBar BaBar at SLAC is the pioneer experiment in HEP in use of Geant4 Started in 2000 Simulated 5*10 9 events so far Produced at 20 sites in North America and Europe Current average production rate 6.1 x 10 7 events/week Now simulating PEP beam line as well (-9m < z IP < 9m) Courtesy of D.Wright (SLAC)
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8 Boulby Mine dark matter search Prototype Simulation Courtesy of H. Araujo, A. Howard, IC London LXe GXe PMT mirror source One High Energy event
Kernel I - M.Asai (SLAC)9 Geant4 for beam transportation Courtesy of V.D.Elvira (FNAL)
Kernel I - M.Asai (SLAC)10 Courtesy of G.Blair (CERN)
Kernel I - M.Asai (SLAC)11 Courtesy of S.Incerti (IN2P3/CNRS)
Kernel I - M.Asai (SLAC)12 Chandra X-ray observatory, with similar orbit, experienced unexpected degradation of CCDs Possible effects on XMM? Baffles X-ray detectors (CCDs) Mirrors Telescope tube X-ray Multi-Mirror mission (XMM) Launch December 1999 Perigee 7000 km apogee km Flight through the radiation belts
Kernel I - M.Asai (SLAC)13 astrophysics - ray bursts AGILE GLAST Typical telescope: Tracker Calorimeter Anticoincidence conversion electron interactions multiple scattering -ray production charged particle tracking GLAST
Kernel I - M.Asai (SLAC)14 MAXI ISS Columbus AMS EUSO Bepi Colombo SWIFT LISA Smart-2 ACE INTEGRAL Astro-E2 JWSTGAIA Herschel Cassini GLAST XMM-Newton
Kernel I - M.Asai (SLAC)15 Courtesy T. Ersmark, KTH Stockholm
Kernel I - M.Asai (SLAC)16 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 G4 “standard” Geant4 low-E Solar X-rays, e, p Courtesy SOHO EIT C, N, O line emissions included ESA Space Environment & Effects Analysis Section Geant4 in space science
Kernel I - M.Asai (SLAC)17 Bepi Colombo: X-Ray Mineralogical Survey of Mercury Alfonso Mantero, Thesis, Univ. Genova, 2002 Space Environments and Effects Section BepiColombo ESA cornerstone mission to Mercury Courtesy of ESA Astrophysics
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Kernel I - M.Asai (SLAC)22 Harald Paganetti GEANT4 based proton dose calculation in a clinical environment: technical aspects, strategies and challenges
Kernel I - M.Asai (SLAC)23 Screen shots of gMocren
Kernel I - M.Asai (SLAC)24 CT-simulation with a Rando phantom Experimental data obtained with TLD LiF dosimeter CT images used to define the geometry: a thorax slice from a Rando anthropomorphic phantom Comparison with commercial treatment planning systems M. C. Lopes 1, L. Peralta 2, P. Rodrigues 2, A. Trindade 2 1 IPOFG-CROC Coimbra Oncological Regional Center - 2 LIP - Lisbon Agreement better than 2% between GEANT4 and TLD dosimeters
Comparison of Geant4 Results to EGSnrc and Measured Data in Large Field Electron Dose Distributions Central axis depth dose curves and dose profiles of 6-21 MeV Primus electron beams were measured for a 40x40 cm field and simulated in EGS4 in work presented at the First McGill International Workshop in Those Monte Carlo treatment head and water phantom simulations have now been replicated with EGSnrc and the Geant4 Simulation Toolkit (version 8.2.p01). In each case, as with the original EGS4 simulation, source and geometry have been adjusted to best match simulation results to measurement. Geant4 simulations were also shown for case of using the exact same source and geometry parameters used in the EGSnrc simulations. Bruce Faddegon (UCSF), Joseph Perl (SLAC) Jane Tinslay (SLAC), Makoto Asai (SLAC) Work supported in part by the U.S. Department of Energy under contract number DE-AC02-76SF00515 and NIH R01 CA A2. Monte Carlo Techniques in Radiotherapy delivery and verification: Third McGill International Workshop Montreal, May 29 - June 1, 2007
Kernel I - M.Asai (SLAC)26 Med Phys Apps at ESTRO this Week