학술논문

Proton radiography
Document Type
Conference
Source
Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Particle accelerator conference Particle Accelerator Conference, 1999. Proceedings of the 1999. 1:579-583 vol.1 1999
Subject
Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Nuclear Engineering
Robotics and Control Systems
Protons
Diagnostic radiography
Laboratories
Testing
Object detection
Nuclear weapons
X-ray imaging
Detectors
Apertures
Motion pictures
Language
Abstract
With the nuclear weapons program moving to Science Based Stockpile Stewardship (SBSS), new diagnostic techniques are needed to replace weapons testing. Proton Radiography is being developed within the SBSS program as one such tool. It is analogous to transmission X-ray radiography, but uses protons instead of photons. Proton Radiography has high penetrating power, high detection efficiency, small-scattered background, inherent multi-pulse capability, and large standoff distances between test objects and detectors. Multiple images on a single axis through progressively smaller angle-cutting apertures can provide material identification. Proton Radiography can make multi-axis, multi-frame radiographs: i.e., 3D radiographic movies. This approach to SBSS is being developed at the Los Alamos National Laboratory (LANL) and the Lawrence Livermore National Laboratory (LLNL). This new method of radiography, as well as radiography experiments performed at the LANSCE accelerator at LANL and at the Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory, are discussed.