Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Darrel L. Lager"'
Publikováno v:
International Journal of Pattern Recognition and Artificial Intelligence. :357-369
An expert system that acts as an intelligent assistant to operators tuning a particle beam accelerator was developed. The system incorporates three approaches to tuning: (1) Duplicating within a software program the reasoning and the procedures used
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 293:480-485
We have developed MAESTRO, a m odel a nd e xpert s ystem t uning r esource for o perators. It provides a unified software environment for optimizing the performance of large, complex machines, in particular the Advanced Test Accelerator and Experimen
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
A flexible linear induction accelerator model (LIAM) was developed to predict both beam centroid position and the beam envelope. LIAM requires on-axis magnetic profiles and is designed to easily handle overlapping fields from multiple elements. Curre
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
An expert system has been developed that acts as an intelligent assistant for tuning particle beam accelerators. This system is called MAESTRO-Model and Expert System Tuning Resource for Operators. MAESTRO maintains a knowledge base of the accelerato
Autor:
Hal R. Brand, Darrel L. Lager, W.C. Turner, F.E. Coffield, W.E. Nexsen, S.L. Allen, W.J. Mauer, Y.-J. Chen, L. V. Griffith, F.J. Deadrick, F.W. Chambers, A.C. Paul, S.E. Sampayan
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
The ETA-II linear induction accelerator is used to drive a microwave free-electron laser (FEL). Corkscrew motion, which previously limited performance, has been reduced by: (1) an improved pulse distribution system which reduces energy sweep, (2) imp
Publikováno v:
Geophysical Prospecting. 29:627-638
High-frequency electromagnetic probing is used to monitor the rate and direction of flow of fluids injected into the ground. This method shows the potential for providing more detailed information than procedures presently used. The experimental tech
Publikováno v:
Radio Science. 11:285-293
Experiments were conducted to determine the in situ relative dielectric constant ϵr and skin depth δ of hard rock in a permafrost region. In the Brooks Range in northern Alaska, measurements of transmission attenuation and transmission phase shift
Autor:
Edmund K. Miller, Darrel L. Lager
Publikováno v:
Radio Science. 17:211-217
A one-dimensional configuration is the simplest geometry to invert, yet it has practical application to such problems as scattering from inhomogeneous half spaces and propagation on nonuniform transmission lines. Whether the medium parameters vary co
Publikováno v:
Radio Science. 11:875-883
Although the real part of the complex Poynting vector, P→ cannot be strictly interpreted to indicate power flow, its previous use for this purpose has produced no logical inconsistencies. Results of Re(P→) for sources in lossy media, for plane wa
Publikováno v:
GEOPHYSICS. 44:1667-1676
Electromagnetic (EM) probing between boreholes is useful for locating high‐contrast geophysical anomalies such as a tunnel. Theoretical and experimental studies of EM field interaction with a tunnel show that minima in the received signal can be us