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Requirements, Development Plans, and Requests

Requirements, Development Plans, and Requests . Geant4 Technical Forum Nov. 8, 2011. Georg Weidenspointner, Robert Andritschke , Stefanie Granato , and Dieter Schlosser MPE Garching & MPI HLL, Munich. Detector Developments and Simulation Requirements .

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Requirements, Development Plans, and Requests

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  1. Requirements, Development Plans,and Requests • Geant4 Technical Forum • Nov. 8, 2011 Georg Weidenspointner, Robert Andritschke, Stefanie Granato, and Dieter Schlosser MPE Garching & MPI HLL, Munich

  2. Detector Developmentsand Simulation Requirements • MPE and MPI are developing detectors for: • X-ray astronomy (e.g. XMM, eROSITA, ATHENA) • High-energy particle physics (e.g. ATLAS, Belle II) • Planetary science (e.g. ROSETTA, BepiColombo, Mars Rovers) • Photon science (e.g. SLAC LCLS, European XFEL) • Optical astronomy (e.g. European VLT) • Detectors for X-ray spectrometers and transmission electron microscopes • ⇒ Main simulation requirements for low-energy physics in Geant4: • Photon interactions • Electron energy loss and multiple scattering • Atomic de-excitation • PIXE • Radioactive decay • Complex geometries with thin (< μm) layers close to detectors • Physics and software quality is critical

  3. Development Plans • We have joined a diverse, international group of dedicated colleagues • with similar physics requirements for Geant4 • This working group is actively improving all Geant4 physics relevant • for our needs • physics, software design, efficiency • documented in numerous publications and conference contributions • (see http://www.ge.infn.it/geant4/papers/) • EPDL/EEDL-based processes used in production until new, • state-of-the-art developments are mature to replace them • Our PIXE model has been released in the “pii package” • More improvements are pending or in progress, including • Proton ionization (Batic et al., IEEE TNS, in press) • PIXE (Batic et al., Comp. Phys. Comm., in press) • Electron ionization (Seo et al., IEEE TNS, in press) • (Best Student Award, Monte Carlo 2011) • Atomic parameters (Pia et al., IEEE TNS, in press) • Photon interactions with matter • Performance accessing data tabulations

  4. Requests • Geant4 electromagnetic working group wants to remove the original • low-energy extension, which they consider “obsolete”, from future • Geant4 releases. • Our requests: • Keep original low-energy processes in future Geant4 releases. • If Geant4 electromagnetic working group does not want to maintain them, move EPDL/EEDL based physics processes to “pii package”. • Together with our collaborators, we will maintain – and improve – • these processes along with PIXE.

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