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PNCAS
The Elements
A novel single pulse activation design
- a compact, low power, high fluence,
short pulse, fast neutron generator
- a set of large area gamma detector
using filtered plastic scintillator
- photomultiplier with current mode
input
- a time resolved chromatic signal
analysis algorithm
The Neutron Source
A novel compact pulsed plasma neutron
source
- 108 neutrons of >
8 MeV per pulse of < 10 ns
- activate ALL elements - H, C, O,
N, in the explosives
- compact high voltage pulsed power
generator
- low power requirement ( < 150
W average )
- non-radioactive in off position
The Detector
An unique gamma detection concept
- non-counting ultra-fast (< 2ns)
current mode detection
- maximum sensitivity with no pile
up
- broad overlapping spectral channels
defined by filters
- processing methodology for explosive
feature extraction with only a few
detection channels
- detect both gamma and neutron backscatter
- large area at low cost
The Algorithm
Advanced Digital Signal Processing
- advanced data reduction algorithm
- simulation optimized data channels
for feature extraction
- high background rejection
- sensitivity in object detection
- object discrimination
The Progress
Design / construction / optimization
on
- neutron tube based on 7Li(d,n)8Be
reaction
- high voltage pulse generator
- command & control system
- gamma energy filter
- gamma detector / filter array
- data acquisition and processing
- extensive modelling with MCNP
- completion of laboratory unit
The Laboratory Unit more
The Next Step
- laboratory testing
- hardware optimization
- software optimization
- integration and automation
- MINESEYE PNCAS unit architecture
- ruggedize, compact pulsed power
driver
- transient digitizer
- fast PC
- yes / no probability display
(next
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