Analog signal multiplexing for PSAPD-based PET detectors: simulation and experimental validation

Analog signal multiplexing for PSAPD-based PET detectors: simulation and experimental validation.

A 1 mm(3) resolution clinical positron emission tomography (PET) system employing 4608 position-sensitive avalanche photodiodes (PSAPDs) is under development. This paper describes a detector multiplexing technique that simplifies the readout electronics and reduces the density of the circuit board design. The multiplexing scheme was validated using a simulation framework that models the PSAPDs ...

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Parallel Simulation Algorithms for Grid - Based Analog Signal

In this paper, specialized algorithms for circuit-level simulation of grid-based analog signal processing arrays on a massively parallel processor are described and implementation results presented. In our approach, the trapezoidal rule is used to discretize the diierential equations that describe the analog array behavior, Newton's method is used to solve the nonlinear equations generated at e...

Parallel Simulation Algorithms for Grid-Based Analog Signal Processors

Massively parallel simulation algorithms for grid-based analog signal processors

This paper presents the algorithms for cmvsim, a program for performing the transient simulation of grid based analog signal processors on a massively parallel computer. A grid-based equation formulation approach and a block-diagonal preconditioned CGS algorithm are described, and it is shown how they are used to eeciently perform transient simulation using the massively parallel Connection Mac...