4 research outputs found
Detector Simulation Challenges for Future Accelerator Experiments
Detector simulation is a key component for studies on prospective future high-energy colliders, the design, optimization, testing and operation of particle physics experiments, and the analysis of the data collected to perform physics measurements. This review starts from the current state of the art technology applied to detector simulation in high-energy physics and elaborates on the evolution of software tools developed to address the challenges posed by future accelerator programs beyond the HL-LHC era, into the 2030â2050 period. New accelerator, detector, and computing technologies set the stage for an exercise in how detector simulation will serve the needs of the high-energy physics programs of the mid 21st century, and its potential impact on other research domains
Detector simulation challenges for future accelerator experiments
Detector simulation is a key component for studies on prospective future high-energy colliders, the design, optimization, testing and operation of particle physics experiments, and the analysis of the data collected to perform physics measurements. This review starts from the current state of the art technology applied to detector simulation in high-energy physics and elaborates on the evolution of software tools developed to address the challenges posed by future accelerator programs beyond the HL-LHC era, into the 2030â2050 period. New accelerator, detector, and computing technologies set the stage for an exercise in how detector simulation will serve the needs of the high-energy physics programs of the mid 21st century, and its potential impact on other research domains
The Future of High Energy Physics Software and Computing
Software and Computing (S&C) are essential to all High Energy Physics (HEP)
experiments and many theoretical studies. The size and complexity of S&C are
now commensurate with that of experimental instruments, playing a critical role
in experimental design, data acquisition/instrumental control, reconstruction,
and analysis. Furthermore, S&C often plays a leading role in driving the
precision of theoretical calculations and simulations. Within this central role
in HEP, S&C has been immensely successful over the last decade. This report
looks forward to the next decade and beyond, in the context of the 2021
Particle Physics Community Planning Exercise ("Snowmass") organized by the
Division of Particles and Fields (DPF) of the American Physical Society.Comment: Computational Frontier Report Contribution to Snowmass 2021; 41
pages, 1 figure. v2: missing ref and added missing topical group conveners.
v3: fixed typo
Design and Evaluation of a Novel Lens-Based SPECT System Based on Laue Lens Gamma Diffraction: GEANT4/GAMOS Monte Carlo Study
Abstract While improvements in SPECT imaging techniques constitute a significant advance in biomedical science
and cancer diagnosis, their limited spatial resolution has hindered their application to small animal research and early tumour
detection. Using recent breakthroughs established by the high-energy astrophysics community, focusing X-ray optics provides a
method to overcome the paradigm of low resolution and presents the possibility of imaging small objects with sub-millimetre
resolution. This thesis aims to tackle the constraints associated with the current SPECT imaging designs by exploiting the notion of
focusing high energy photons through Laue lens diffraction and developing a means of performing gamma rays imaging that would
not rely on parallel or pinhole collimators. The gradual development of the novel system is discussed, starting from the single,
modular, and multi-Laue lens-based SPECT. A customized 3D reconstruction algorithm was developed to reconstruct an accurate
3D radioactivity distribution from focused projections. A plug-in implementing the Laue diffraction concept was developed and
used to model gamma rays focusing in the GEANT4 toolkit. The plug-in will be incorporated into GEANT4 upon final approval
from its developers. The single lens-based, modular lens-based and multi lens-based SPECT models detected one hit per 42 source
photons (sensitivity of 790 â), three hits per 42 source photons (sensitivity of 2,373 â), and one hit per 20 source
photons (sensitivity of 1,670 â), respectively. Based on the generated 3D reconstructed images, the achievable spatial
resolution was found to be 0.1 full width at half maximum (FWHM). The proposed designâs performance parameters were
compared against the existing SIEMENS parallel LEHR and multi-pinhole (5-MWB-1.0) Inveon SPECT. The achievable spatial
resolution is decoupled from the sensitivity of the system, which is in stark contrast with the existing collimators that suffer from
the resolution-sensitivity trade-off and are limited to a resolution of 2 . The proposed system allows discrimination between
adjacent volumes as small as 0.113 , which is substantially smaller than what can be imaged by any existing SPECT or PET
system. The proposed design could lay the foundation for a new SPECT imaging technology akin to a combination of tomosynthesis
and lightfield imaging