Adaptive acceleration structures in perspective space

Opticks is an open source project that integrates the NVIDIA OptiX GPU ray tracing engine with Geant4 toolkit based simulations. Massive parallelism brings drastic performance improvements with optical photon simulation speedup expected to exceed 1000 times Geant4 with workstation GPUs. Optical physics processes of scattering, absorption, scintillator reemission and boundary processes are implemented as CUDA OptiX programs based on the Geant4 implementations. Wavelength-dependent material and surface properties as well as inverse cumulative distribution functions for reemission are interleaved into GPU textures providing fast interpolated property lookup or wavelength generation. OptiX handles the creation and application of a choice of acceleration structures such as boundary volume hierarchies and the transparent use of multiple GPUs. A major recent advance is the implementation of GPU ray tracing of complex constructive solid geometry shapes, enabling automated translation of Geant4 geometries to the GPU without approximation. Using common initial photons and random number sequences allows the Opticks and Geant4 simulations to be run point-by-point aligned. Aligned running has reached near perfect equivalence with test geometries.

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Guided-mode resonance, resonant grating thickness, and finite-size effects in dielectric laser acceleration structures

Applied Optics ◽

10.1364/ao.55.002634 ◽

2016 ◽

Vol 55 (10) ◽

pp. 2634 ◽

Cited By ~ 7

Author(s):

Andrzej Szczepkowicz

Keyword(s):

Size Effects ◽

Finite Size ◽

Finite Size Effects ◽

Guided Mode ◽

Resonant Grating ◽

Laser Acceleration ◽

Guided Mode Resonance ◽

Acceleration Structures ◽

Grating Thickness

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Memory efficient acceleration structures and techniques for CPU-based volume raycasting of large data

2004 IEEE Symposium on Volume Visualization and Graphics ◽

10.1109/svvg.2004.8 ◽

2005 ◽

Cited By ~ 9

Author(s):

S. Grimm ◽

S. Bruckner ◽

A. Kanitsar ◽

E. Groller

Keyword(s):

Large Data ◽

Acceleration Structures ◽

Memory Efficient

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CLUSTER observations of electrostatic acceleration structures above the polar cap and implications for their origin in the magnetopause boundary layer

2011 XXXth URSI General Assembly and Scientific Symposium ◽

10.1109/ursigass.2011.6051059 ◽

2011 ◽

Author(s):

Dominique Fontaine ◽

Alexandra Teste

Keyword(s):

Boundary Layer ◽

Polar Cap ◽

Acceleration Structures

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Electromagnetic Simulations of Helical-Based Ion Acceleration Structures

Proceedings of the 2005 Particle Accelerator Conference ◽

10.1109/pac.2005.1591153 ◽

2006 ◽

Cited By ~ 2

Author(s):

S.D. Nelson ◽

G. Caporaso ◽

A. Friedman ◽

B.R. Poole ◽

R. Briggs ◽

...

Keyword(s):

Ion Acceleration ◽

Electromagnetic Simulations ◽

Acceleration Structures

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Dynamic Acceleration Structures for Interactive Ray Tracing

Eurographics - Rendering Techniques 2000 ◽

10.1007/978-3-7091-6303-0_27 ◽

2000 ◽

pp. 299-306 ◽

Cited By ~ 11

Author(s):

Erik Reinhard ◽

Brian Smits ◽

Charles Hansen

Keyword(s):

Ray Tracing ◽

Acceleration Structures

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THE TESLA LINEAR COLLIDER PROJECT

International Journal of Modern Physics A ◽

10.1142/s0217751x98001220 ◽

1998 ◽

Vol 13 (14) ◽

pp. 2431-2441

Author(s):

S. SCHREIBER

Keyword(s):

Linear Collider ◽

Center Of Mass ◽

Mass Energy ◽

Next Generation ◽

Center Of Mass Energy ◽

Acceleration Structures

TESLA is one of the projects for a next generation TeV linear collider. Emphasis is on e+e--Physics at an initial center of mass energy of 500 GeV and a luminosity above 5·1033 cm -2 s -1. Different to other approaches, TESLA has chosen superconducting acceleration structures operated at 1.3 GHz. In this report, the TESLA project is briefly described and some aspects of a possible e-e--mode are discussed.

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