REGIONAL ACCESS
USA ---------------- Benelux Canada France Germany Japan Northern Europe Russia United Kingdom

EXTRANET ACCESS
select a site ---------------- CINET Extranet HIS-20 Extranet HP SW Updates

Features

• Eliminates the cost of purchasing, tracking, and disposing of radioactive standards
• No radioactive sources needed for accurate efficiency calibrations
• New: Calibrations valid from 10 to 7000 keV
• New: 3D visualization speeds geometry creation and error identification
• New: Uncertainty Estimator and Assay Planning tool
• New: Advanced Collimator designs include liners and back shielding
• Calibrations valid from detector face out to 500 meters
• Operates with Germanium, NaI and LaBr₃ detectors characterized by CANBERRA
• Includes 21 geometry templates for common container shapes and sample distributions
• Calibrations accurate at any angle from detector, not just on center line
• Ideal for In Situ applications, where large and various sample types are often encountered
• Sample size can be point-like, or up to 500 meters in size
• Includes library of common absorber materials and tools to create new material types
• Custom templates can be provided to meet special application needs
• Multi-Efficiency program allows creation of compound efficiencies for multiple detectors, multiple locations or multiple sources
• Geometry Composer Report summarizing all information defined for a given geometry can be displayed and printed
• Compliant with 2009 NRC Regulatory Guide 1.21

Description

The ISOCS (In Situ Object Counting System) Calibration Software brings a new level of capabilities to gamma sample assay by eliminating the need for traditional calibration sources during the efficiency calibration process. By combining the detector characterization produced by the MCNP modeling code, mathematical geometry templates, and a few physical sample parameters, the ISOCS Calibration Software gives you the ability to produce accurate qualitative and quantitative gamma assays of most any sample type and size (Figure 1).

Figure 1
ISOCS Calibration Software with template diagram, used for data entry to generate the Genie™ 2000 Efficiency Curve

In addition to saving money by eliminating the need to purchase, track, and dispose of many calibration sources, ISOCS calibration also saves time in the field. Instead of hours spent in traditional source preparation and long calibration counts, an ISOCS calibration for a new geometry requires only a few seconds of computer calculations. With the ISOCS software you have the flexibility to design your setup, define your geometries, and analyze data in the office; reducing actual time in the field to the system setup and sampling time, no matter how many different geometries you're measuring. And now this capability is available for LaBr₃ and NaI scintillators too.

The secret to this capability is twofold:

1. The energy/efficiency/spatial response profile of the detector has been characterized by CANBERRA with the well-known MCNP Monte Carlo modeling code.
2. Mathematical templates have been created for most of the sample geometries that will be encountered - planar surfaces, rectangular boxes, barrels, pipes, beakers, etc.

To a basic geometry template, add the specifics for a given sample - its size, density, distance from the detector, etc. - and at the click of a button the ISOCS Calibration Software generates a custom efficiency calibration specifically tailored for that detector, sample, and geometry. The remainder of this document will describe how this is done and how the various standard geometry templates are used.

*US Patent 6228664 B1