Hand-Held Isotope Identifier for accurate in-field analysis...

 

 

 
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rad-ID Handheld Isotope Identification

 

Hand-Held Isotope Identifier for accurate in-field analysis...

Rad-ID Specification Sensor Fusion Technology Overview

The rad-ID™ is a complex radiation laboratory in a small box that has been carefully designed to be easy to use. It contains four different types of sensors, each designed to allow an operator to detect, locate, and identify radioactive isotopes. It offers public safety and federal agencies a highly accurate and reliable in-field tool to detect, identify and quickly classify radiological hazards as to exact isotope, dose rate and location of greatest concentration. Over 110 Medical, Industrial and SNM isotopes of significance are included in the extensive radiation library. Designed to be rugged and easy to operate, the rad-ID can rapidly provide critical isotope identification for non-technical users and extensive analysis for highly trained personnel within minutes. When used with gamma detectors such as D-tect Systems rad-D™and mini rad-D™, huge areas can be inspected and protected from radiological hazards at a low cost. An IrDA and a BlueTooth® wireless interface allows uploading of data via email / internet as well as downloading additional identification criteria to the search library if required.

 The rad-ID has only two modes, Detection or Identification. When the rad-ID is first turned on it will measure the background radiation for 30 seconds, and then start with the Detection Mode Summary screen. When the Handle Button is pressed, the rad-ID will go into Identification mode. If the Handle Button is pressed in Identification mode, it will return to Detection Mode. The rad-ID controls consist of:

  • An on/off switch, located on the top panel under the handle;

  • Three lit buttons under the LCD display;

  • A button on the tip of the handle.

   These three buttons change functions in different menus and are always labeled above the buttons, at the bottom of the display. The button in the handle is referred to as the Handle Button. The primary purpose of the Handle Button is to shift the rad-ID between Detection and Identification modes. A secondary purpose is that the Handle Button will always take the operator to the top of the menu tree, no matter how deep in submenus the operator is. This shortcut can be very convenient.

The display is a 65,000 color, 320x240 pixel liquid crystal display, backlit for easy reading in bright sunlight or dark rooms. Brightness can be adjusted to the preference of the operator. The backlight can be set to turn off after a selected period of time to save power. This can considerably lengthen battery life. The backlight will only turn off in Detection mode, and only after the rad-ID has not been touched for the selected go-to-sleep duration. To turn the backlight on again, just press any button. A button pressed while the backlight is off will not activate any function other than to turn the backlight back on. The backlight will automatically turn on if an alarm level (operator selectable) is reached.

FEATURES

  • Positive Isotope ID following detection of gamma radiation
  • Quickly identifies medical isotopes to rule out unauthorized possession of a radiological agent
  • Quickly identifies presence of neutrons emitted by SNM's
  • Allows first responder team or inspection personnel to develop plan of action following ID
  • Identification results can be uploaded via email to qualified personnel for further analysis
  • Minimal training required to maximize instrument effectiveness

   Sensor Fusion Technology

 The rad-ID uses four different sensors to detect and analyze radiation and utilizes Sensor Fusion Technology:

  1. A single large crystal of Sodium Iodide (NaI) doped with Thallium (1.125” diameter x 1.5” long)

  2. Eight Cadmium Zinc Telluride (CZT) crystals, (5 mm x 5mm x 5mm each)

  3. A Geiger-Mueller (GM) sensor

  4. Helium-3 (He3) sensor

   The CZT array is located in the front of the rad-ID. The NaI sensor is located on the right side, under the right-most button. The GM sensor is located in the center. The He3 tube is located on the left side.

The four sensors are used in the Detection and Identification modes in the following ways:

Detection Mode

  • The NaI sensor is extremely efficient and sensitive at detecting gamma radiation and high-energy X-rays. In the Detection mode, the NaI provides the highest sensitivity of radiation detection

  • The GM is not very sensitive, and is therefore good at measuring high radiation environments where the NaI is too sensitive. Basically, it takes over measuring radiation when the NaI sensor starts getting saturated and losing accuracy.

  • The He3 sensor detects low energy neutrons. It is surrounded by a polyethylene moderator to increase the amount of neutrons detected.

Identification Mode

  • The NaI sensor is very sensitive and efficiently measures a wide range of gamma photon energies, but does not have extremely high energy accuracy. The NaI sensor is used to measure the spectrum of energies from 3000 keV down to several hundred keV. It uses a dedicated 4096-channel analyzer to measure the spectrum of a radiation source.

  • The CZT sensor measures low energy gamma photons extremely accurately (much more than the NaI), and is critical to quickly and accurately identify medical isotopes and nuclear weapon materials. The CZT array uses its own dedicated 4096-channel analyzer to measure the spectrum of a radiation source.

SPECIFICATIONS

Versions:

Rad-ID G

·   Four large CZT (4 cm2) array allows fast photon collection and accuracy

·   Large 24.4 cm3 NaI(Tl) crystal to allow sensitive detection and rapid collection of photons

·   GM tube to detects gammas and betas - handles high flux environments

Rad-ID G-Plus

·   Eight large CZT (4 cm2) array allows fast photon collection and higher accuracy

·   Large 24.4 cm3 NaI(Tl) crystal to allow sensitive detection and rapid collection of photons

·   GM tube to detects gammas and betas - handles high flux environments

Rad-ID GN

·   Large 4 cm2 CZT (4) array allows fast photon collection with high accuracy

·   Large 24.4 cm3 NaI(Tl) crystal to allow sensitive detection and rapid collection of photons

·   He3 detector for high-probability neutron detection

·   GM tube to detects gammas and betas - handles high flux environments

Rad-ID GN-Plus

·   Large 4 cm2 CZT (8) array allows fast photon collection with high accuracy

·   Large 24.4 cm3 NaI(Tl) crystal to allow sensitive detection and rapid collection of photons

·   He3 detector for high-probability neutron detection

·   GM tube to detects gammas and betas - handles high flux environments 

4096 channel MCA

Dose measurement range:  2 uR/Hr to 15 R/Hr (.02 uSv/Hr to 150 mSv/Hr)

Energy Ranges:

CzT - 20 keV – 400 keV

NaI - 300 keV – 3000 keV

He3 - Thermal -14 MeV

GM Tube - 50 keV – 2000keV

Constant radiation level readout for user safety

User expandable identification database

Wireless (Bluetooth) and IrDA communication allowing measured data to be downloaded and emailed instantly.

High resolution, 65,000 color, 3.6 inch display (320 x 240), backlit for easy reading in all light conditions

Comfortable shoulder-strap for extended use

Adjustable alarm levels

IP 65 Compliant as described in IEC529

Operational outside temperature range: 5° F to 130° F (-15° C to 55° C)

Thermally corrected sensors

Auto-scaling Display

PC communication software

User selected measurement units

Dimensions: 4” x 5.4” x 11.1” (102mm x 137mm x 282mm)

Weight: 5.7 lbs (2.6 kg), including batteries

Operates on 3 “D” cell batteries with an operational life of 12 hours or longer

Carrying Case – Storm iM2500

·   Inside Dimensions - 20.5” x 11.5” x 7.2” (521mm x 292mm x 183mm)

·   Outside Dimensions - 21.7” x 14.1” x 8.9” (550mm x 358mm x 226mm)

Conforms with the requirements of the following directive: 89/336/EEC Electromagnetics Compatibility – EMC Through compliance of the following Standards: EN 61000-4-8; EN 61000-4-3; EN 61000-4-2;  

  *NOTE: Many of the documents are in PDF format - if you do not have Adobe Acrobat Reader, click here to get it.

 

     

Last Page Update: - Copyright 2009, Laurus Systems Inc.