1 / 2

Pixel array

IMR-MIP/ High-Detection-Efficiency and High-Spatial-Resolution Thermal Neutron Imaging System for the Spallation Neutron Source using Pixelated Semiconductor Neutron Detectors Douglas S. McGregor, Kansas State University, DMR 0412208. D.S. McGregor, J.K. Shultis, W. Dunn Kansas State University

petra
Download Presentation

Pixel array

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IMR-MIP/ High-Detection-Efficiency and High-Spatial-Resolution Thermal Neutron Imaging System for the Spallation Neutron Source using Pixelated Semiconductor Neutron Detectors Douglas S. McGregor, Kansas State University, DMR 0412208 D.S. McGregor, J.K. Shultis, W. Dunn Kansas State University B. Blalock, C. Britton University of Tennessee A new compact neutron imaging detector array has been produced with funds provided by NSF. The array consists of diodes fabricated from Si substrates configured into a linear array of 1000 strip detectors, each with dimensions of 100 microns wide x 4 cm long. Each strip has thousands of microscopic holes etched deep into the substrate backfilled with the neutron reactive material 6LiF. As a result, these devices are the most compact high efficiency neutron detectors available, tested at > 12% intrinsic efficiency, with newer designs capable of exceeding 20%. Special ASICS have been designed and built to operate the array, and a prototype board has been assembled. The system will be delivered to the DOE Spallation Neutron Source Facility at OAK Ridge National Laboratory in Fall 2007, thereby enabling researchers to observe neutron scattering effects in materials with a compact high resolution system. KSU undergraduate and graduate students on the project Pixel array Microscopic holes filled with 6LiF

  2. IMR-MIP/ High-Detection-Efficiency and High-Spatial-Resolution Thermal Neutron Imaging System for the Spallation Neutron Source using Pixelated Semiconductor Neutron Detectors Douglas S. McGregor, Kansas State University, DMR 0412208 Broader Impacts UT graduate students on the project • Four MS degrees have been conferred, all directly related to the project. • Four more MS degrees are approaching completion, all expected in 2008. • Two PhD degrees are approaching completion, both expected in 2008. • Six undergraduate research assistants have been supported on the project. • Over 15 refereed and conference publications have resulted from, in part, the project. • The perforated diode technology is being used for other types of neutron detectors, such a portable dosimeters. • A patent has been filed on advanced perforated detector designs and the process to fabricate them. Patara ASIC Detector strip array, Patara chip, and readout board

More Related