GammaVision Gamma Spectroscopy Analysis Software

compatibility

• Can run in visible PC environments -64 bit Windows 10, 8.1, and 7 Pro
• Multiple languages: English, German, Chinese, French, and Russian
• Extensive analysis and detection limit functions to adapt to various applications
• Optional report generator, MS Access data storage, and crystal reports for enriching custom reports

process efficiency

• Integrated hardware control
• Automated scripts for consistent measurement processes
• Simplify calibration using wizards and interactive editors
• Customizable spectrum display that can be updated in real-time during collection and detailed peak evaluation

result

• Compliant with industry standards such as ANSI N42.14, ANSI N13.30, and ISO/DIS 11929
• Quality control report, trend analysis, and optional instrument violation locking
• Security measures used to restrict access to specified functions
• Comprehensive V&V test results available for selection

spectral analysis
The core purpose of GammaVision is to accurately identify and quantify radioactive materials using high-resolution gamma spectroscopy measurement systems. This process requires accurate system calibration and analysis settings, powerful peak search and fitting algorithms, as well as various corrections for background, peak interference, attenuation, reporting units, and other factors. Equally important is to comply with regulations and standards for reporting measurement uncertainty and detection limits.

GammaVision ensures accuracy, efficiency, and compliance with standards.

Main analysis functions:

• Compliant with standards: ISO/DIS 11929, ANSI N42.14, ASTM E181
• Total uncertainty propagation for all analysis parameters and up to 9 user-defined parameters
• Analysis parameters: peak search sensitivity, peak uncertainty, peak matching width, score limit and key line testing, fixed channel background determination or peak width score, multi peak deconvolution range, detection limit peak range, automatic energy recalibration standard, etc!
• User defined nuclide library, including key lines, peak activities, and MDA standards
• 19 MDA methods: ORTEC MDA, ORTEC critical level, inhibition of MDA, KTA rule, Japanese 2-Sigma limit, Japanese 3-sigma limit, Curie detection limit RISO MDA、ORTEC LLD、 Peak area, air monitoring - GIMRAD, regulatory guideline 4.16, American counting laboratory, DIN 25 482.5 detection limit, DIN 25 482.5 detection limit, French EDF, NUREG-0472, ISO-11929 decision threshold (critical level), ISO-11929 detection limit (MDA)
• Optional calculation of nuclide activity without qualified peak values (directional fitting)
• Graph peak fitting and residual display
• Customizable report
• Application specific analysis engine
  • WAN32: Simple spectrum with a small number of possible nuclides
  • GAM32: Simple spectrum with a large number of possible nuclides
  • ROI32： WAN32， Added user-defined regions of interest
  • ENV32: Complex spectra with a large number of possible nuclides
  • NPP32: Complex spectra of nuclide mixtures with small or sufficient characterization
  • NAI32: Low resolution (scintillation) spectral analysis
• Peak Search Method
  • Library driven peak seeking analysis
  • Dichotomy ("Mariscotti")
  • User defined areas of interest
• Analysis and correction
  • Background/blank subtraction related or unrelated to nuclides
  • Partial or peak fitting (deconvolution/peak stripping)
  • From the collection time, during the collection period, and the decay of nuclides during the collection period
  • Random and cascaded compliance
  • Gain/energy calibration offset
  • Internal and external absorption
  • Relative geometric extrapolation
  • Peak weighted average nuclide activity

calibration
Accurate calibration is crucial for accurate peak identification and quantification, especially for complex spectra with closely packed heavy peaks. For some systems, this may be a tedious and time-consuming process, but using GammaVision's calibration wizard can make the process exceptionally simple. Simply obtain the spectrum, load the calibration library and source certificate, and calibration is complete!

Calibration can also be automated as part of routine counting or QA processes.

Main calibration functions:

• Calibration Type
  • Channels and Energy - Quadratic Fitting
  • Energy and Peak Shape (FWHM) - Quadratic Fitting
  • Energy and Efficiency - Natural Logarithmic Polynomial Fitting over the Entire Energy Range; Or linear, quadratic, and point-to-point interpolation fitting for individual high-energy and low-energy regions
  • Peak to Total (Cascade Sum)
• calibration process
  • Automatic Energy Calibration (US No. 6006162)
  • Calibration Wizard
  • Semi automatic and manual/interactive
  • Use homework functions for automation
  • Automatic energy calibration adjustment during analysis
• Calibration report and graphical display

quality assurance
It is necessary to regularly check the performance of the instrument to ensure the normal operation of the system during sample analysis. Other regulatory agencies may require these inspections based on regulations, standards, or audit results. Performance indicators should include validation of system calibration parameters, definition of acceptance limits, and warnings when these limits are exceeded. Trend control charts are also applicable and formally required for some applications.

Main quality assurance functions:

• Compliant with ANSI N13.30 and ANSI N42.14 standards
• parameter monitoring
  • Background count rate
  • Total source activity
  • The total peak energy difference between spectrum and library
  • Average actual to calibrated FWHM ratio
  • Average actual to calibrated FWTM ratio
  • Detailed information on individual peaks available in the database
• Low/high warning and minimum/violation limit with optional detector locking function
• Quality Assurance Report and Trend Chart

User interface and reliability
GammaVision provides an intuitive user experience, with the MCA emulator's "spectral window" being the focus of operation. It simplifies routine processes such as hardware control and count rate/peak evaluation, but also provides more advanced operations such as calibration, QA, and spectral analysis, which can be quickly accessed through "hotkeys" or toolbar buttons.

The spectral view provides all the tools required for basic MCA simulation, including hardware control, peak navigation and scaling functions, region of interest evaluation, interactive peak search, spectral overlay for comparison, isotope labeling for identifying common peak values of nuclides, summation/subtraction of other spectra, and spectral smoothing. It also allows users to set preferences for color schemes and spectral data views.

For easy access to spectra, GammaVision's Multi Detector Interface (MDI) mode can display up to 16 interactive windows (8 real-time detectors and 8 spectra from spectral files), which can be operated independently. In addition, by synchronizing the start, stop, and clear operations from a single command, multiple detectors can be enabled for efficient operation.

The spectrum is usually collected using pulse height analysis (PHA) mode, and the resulting data will be stored in channels related to pulse height. GammaVision can also store data or time related events in "list mode" and filter events according to user-defined time ranges after collection. This process allows for scanning long time acquisitions at shorter intervals to accurately identify when activity is detected or to view specific periods of interest.

If the standard 'ask at the beginning' option is used, basic sample measurement is a simple process. Just check the user input required for each measurement, and the system will prompt the user to select the appropriate file or input sample data at the beginning of the collection. Other options can also be set to automatically save and analyze spectra and print analysis reports.

Main user interface functions:

• View spectrum
  • Up to 8 real-time detectors and 8 saved spectra can be viewed simultaneously
  • Real time updates and displays during the collection period.
  • Zoom in/out, independent of the full spectrum window
  • User defined spectral attributes: color, data points
• Interactive ROI/Peak Calculation
  • Activity of peak center channel, shape, total/net area, and uncertainty
  • Variable quantity of background channels
  • Improved FWHM accuracy when the peak center channel falls between two channels
• Advanced features
  • Quick Mariscotti peak search, immediately mark the area of interest
  • Region of Interest (ROI) report displayed in column or paragraph format
  • Isotope labeling with peak amplitude estimation to confirm peak sources
  • Interactive "jump to peak" through ROI, library energy, or peak search options
  • Spectral superposition allows for direct visual comparison with reference
  • Combining spectra through channel summation or stripping
  • Spectral smoothing to improve statistical poor peak shapes
  • List mode spectrum filtered by time range
  • The basic measurement process of "asking at the beginning"
• safety
  • Menu level password protection
  • The detector can be locked by the owner

automation
Although the toolbar and menu options are simple and intuitive, this method of operation does not guarantee the consistency processing typically required when measuring frequently or by different personnel. In this case, a simple text script called "homework" can be used to implement a more structured approach. This feature allows you to define every detail of the process in advance, or dynamically create every detail of the process through a custom user interface. Almost all hardware commands, analysis parameters, and required measurement processes can be programmed to obtain consistent and reliable results every time.

Main automation functions:

• Simple text scripts do not require the operator to have programming experience
• Define and set any analysis parameters or prompt user input
• All hardware control functions are available
• Assignments can be dynamically generated through custom data input interfaces
• Custom variables can be used for advanced programming
• Run external applications to set parameters and automate data integration

hardware control
The interface between hardware and software is provided through the ORTEC Connections architecture, which can support up to 250 detectors on the local network. This application layer contains all the hardware drivers and communication protocols required for software applications to control MCB (Multi Channel Buffer) instruments. Hardware controls can be accessed through the MCB property page integrated with GammaVision and other standard ORTEC applications. Windows 10、 8.1 and 7 64 bit hardware compatibility apply to all ORTEC instruments that use USB and TCP/IP connection protocols. Instruments that rely on the host (such as card insertion or USB devices) can choose to be shared on the network through a local MCB server, allowing for remote control of the instruments from a location.

Key hardware control functions:

• List mode data collection 1
• high-pressure control
• Curve and fine-tuning gain adjustment
• Zero point and gain stabilizer
• SMART-1 detector function
• ZDT non-destructive counting correction
• Analog and digital amplifier filters
• Automatic and manual optimization
• Sample changer control
• Insight ® scope mode
• Battery voltage monitoring for portable instruments
• Condition Monitoring
• Collect presets, including real-time and live time, ROI peak, ROI integral, peak uncertainty or MDA