Particle tracking with scintillating fibers

WE-G-BRB-06: Real-Time Radiation Field Tracking Using Long Scintillating Fibers.

PURPOSE To ensure the quality assurance of small field, dynamic radiotherapy, we present and validate a radiation tracking system based on long scintillating fibers that allows for the real-time measurement of the position and energetic fluence of a small incident radiation field. METHOD We aligned 60 parallel scintillating fibers on a thin grooved acrylic slab with a 100-cm source-to-fibers ...

A New Modified Particle Filter With Application in Target Tracking

The particle filter (PF) is a novel technique that has sufficiently good estimation results for the nonlinear/non-Gaussian systems. However, PF is inconsistent that caused mainly by loss of particle diversity in resampling step and unknown a priori knowledge of the noise statistics. This paper introduces a new modified particle filter called adaptive unscented particle filter (AUPF) to overcome th...

Predicted Performance of Neutron Spectrometers Using Scintillating Fibers

A prototype avalanche photodiode array for scintillating-fiber tracking detectors

We have evaluated the performance of a prototype 16-channel avalanche photodiode (APD) array developed primarily for scintillating-fiber (SCIFI) tracking detectors. The APD array was coupled to a 2.5 m long SCIFI array, and the detection efficiency was measured for minimum ionizing particles passing through the SCIFI array. The APD array was cooled to −50◦C to improve the S/N ratio. We have fou...

Isomap Tracking with Particle Filter

The problem of tracking an object in an image sequence involves challenges like translation, in-plane and out-of-plane rotations, scaling, variations in ambient light and occlusions. A model of an object to be tracked is built off-line by making a training set with images of the object with different poses. A dimensionality reduction technique is used to capture the variations in the training i...