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Measures Neutrons and Gammas
Records
LET Spectrum Every Minute
Self Contained
Optional
GPS
Airline
Monitoring
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The HAWK measures mixed-field radiation environments, such as those
found in space, commercial airlines, and many nuclear reactors.
This Tissue Equivalent Proportional Counter (TEPC) instrument is
specially constructed to allow accurate measurement of dose, including
both neutrons and gammas. It includes a detector, an electronic
amplifier, a spectrometer, and software for analyzing the data.
A standard Compact Flash card is used for data storage and transfer
via a PCMCIA slot in a PC.
The HAWK TEPC accurately measures radiation environments where the
radiation spectrum and sources are constantly changing. For example,
the instrument can be used inside an aircraft to measure varying
radiation levels during a flight. The HAWK is superior to its predecessors,
which only record the cumulative dose at a particular time. The
instrument measures absorbed dose, dose equivalent, and LET spectra
minute by minute. It is very sensitive, with the ability to measure
the amount of energy deposited in one micrometer of tissue.
The instrument’s design was developed under contract to the
U.S. National Aeronautics and Space Administration and has been
in use for more than ten years. It has been used on the Mir space
station, the Discovery space shuttle, other National Aeronautics
and Space Administration spacecraft, and airplanes.
Specifications
Mechanical
 Size:
16 cm dia, 34 cm long; carrying case: 35 x 65 x 20 cm
Weight: 5
kg with batteries; 10 kg with carrying case
Construction:
aluminum housing. Controls and connections on front panel.
External
Controls: 6 pushbuttons: 2 for power on/off and 4 softbuttons
External
Connectors: RS232, external power, GPS antenna
External
Displays and indicators: 2 lines x 16 character backlit LCD; 4 LEDs
for low batt, error, battery power, and external power; piezo buzzer
Internal
Controls: digitally set: HV and test pulser
Battery Access:
2 coin opened battery holders for 4 “D” cells
Detector
Detector
Type: sealed spherical tissue equivalent proportional counter, Benjamin
type
Detector
Size : 12.5 cm dia spherical
Wall Material:
A150 Conducting tissue equivalent plastic
Wall Thickness:
0.21 cm, 144 mg/cm
Filling Gas:
propane, 2 micron site size, 7 torr
Operational
System
Measurement Noise: <0.2 keV/mm FWHM
Microphonic
Reduction Circuitry: rise time dependent
MCA: 2 channels,
1024 channels 0 to 1024 keV/mm, 256 channels 0 to 25.6 keV/mm
MCA Deadtime:
64 mSec
Warm Up Time:
2 minutes
Battery Life:
100 hours with alkaline heavy duty cells; 50 hours with optional
GPS.
RS232 Link:
upload and download data and configuration settings
Software
Operating
System: ROM DOS
Memory: compact
flash memory, 1.2 Mbytes/day
Data: complete
spectrum of both channels including status information is recorded
every second
Optional
GPS: records GMT time/date, longitude latitude and altitude
PC Software:
Included
Ordering Information
FW-AD1:
environmental Monitoring System
FW-AD1-GPS:
GPS unit including antenna
FW-AD1-UPS:
Universal Power Supply
See price
list for additional items
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