论文信息 - Neutron Imaging Camera

Neutron Imaging Camera

We describe the Neutron Imaging Camera (NIC) being developed for the detection of special nuclear materials by NASA/GSFC and NSWC/Carderock. The NIC is a self-contained, robust, omni-directional and 3He-independent neutron detector based on the Three-Dimensional Track Imager (3-DTI) technology developed at GSFC for gamma-ray astrophysics applications. The 3-DTI is a large volume time-projection chamber that provides ∼ 0.4 mm resolution for the 3-D tracking of a charged particle. The incident direction of fast neutrons, 0.1 MeV < En < 10 MeV, are reconstructed from the momenta and energies of protons resulting from single and double scatters on methane (CH4). We present angular and energy resolution of the NIC derived from laboratory and accelerator testing.

[1] Hans A. Bethe,et al. Moliere's theory of multiple scattering , 1953 .

[2] J. Krizmanic,et al. Simulated Performance of 3-DTI Gamma-Ray Telescope Concepts , 2006, 2006 IEEE Nuclear Science Symposium Conference Record.

[3] R. Brugnera. OPERA: AN APPEARANCE EXPERIMENT TO SEARCH FOR νμ ↔ ντ OSCILLATIONS IN THE CNGS BEAM , 2004 .

[4] S. Hunter,et al. Neutron Imaging Camera , 2009, IEEE Nuclear Science Symposuim & Medical Imaging Conference.

[5] F. Sauli,et al. Drift and diffusion of electrons in gases: a compilation , 1984 .

[6] P. F. Bloser,et al. Gas Micro-Well Track Imaging Detectors for Gamma-ray Astronomy , 2005 .

[7] W. Blum,et al. Particle detection with drift chambers , 1993 .

[8] Edward A. Mason,et al. The mobility and diffusion of ions in gases , 1973 .

[9] F. Piuz. MEASUREMENT OF THE LONGITUDINAL DIFFUSION OF A SINGLE ELECTRON IN GAS MIXTURES USED IN PROPORTIONAL COUNTERS , 1983 .

[10] Stanley D. Hunter,et al. Imaging micro-well proportional counters fabricated with masked UV laser ablation , 2002 .

[11] S. Planke,et al. The DRIFT-II dark matter detector : Design and commissioning , 2005 .

[12] M. Lehner,et al. Suppressing drift chamber diffusion without magnetic field , 2000 .

[13] Keith Jahoda,et al. Large-area imaging micro-well detectors for high-energy astrophysics , 2002 .

[14] Richard O. Duda,et al. Use of the Hough transformation to detect lines and curves in pictures , 1972, CACM.