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InterSpec is a native or web application to assist in analyzing spectral nuclear radiation data, using a peak-based methodology.Common uses include identifying nuclides present, determining source activity, shielding amounts, source age, or other nuclear reactions present.InterSpec also provides a number of other tools useful for analyzing radiation data including spectral file format converting,dose rate calculations, interactive nuclide decay and reference information, gamma cross section calculations, and more.InterSpec can open data files from most common spectral radiation detectors (e.g., most NaI, HPGe, LaBr,CLYC, CsI, etc. based systems) and assist in their analysis.InterSpec can also be built as a stand-alone (e.g., no Internet connection necessary) native app (using either OS provided WebView, orElectron for display) for Windows, Linux, macOS, iOS, or Android.

For executable installation:

• Windows, Linux, macOS: download from thereleases tab
• iPhone/iPad:iOS App Store
• Android phones and tablets:Android Google Play Store
• From source: see theBuilding From Source.

A brief getting started guide can be found inbrief_ana_overview_InterSpec_Oct2018.pdf; a more comprehensive tutorial is planned for the future.

Release notes, tutorials, and example problems can be found athttps://sandialabs.github.io/InterSpec/releases/.

Interactions with the chart are fast and natural. Peak fitting is as easy as double clicking whereyou want a peak fit, or there is an automated option that is especially useful for HPGe detectors.

Can fit for activities and shielding for multiple nuclides at once, taking into account interferences, ages, self-attenuation, etc. A large shielding database is included, or generic shielding can be used.

Easily fit overlapping peaks. Photopeak sources are assigned to peaks for easy activity/shielding fitting or energy calibration.

Includes an extensive database of nuclides. Nuclide aging is performed on-the-fly throughout the app to allow adjusting or fitting for ages.

Lots of useful tools.

Searching for nuclides by energy, by default, takes into acount peak amplitudes and other peaks in the spectrum (even if you havent fit for them)to order results in an intelligent way.

You can go from source activity to dose, or from measured dose to source activity, or shielding amount.

If you would like to build the app, some instructions are below.

If you are developer of radiation analysis software, there is, in particular some code thatmay be useful for you:

1. sandia_decay: This small library reads insandia.decay.xml and allows you to retrieve the half-lives, xrays, gammas, alpha, betas, etc given off by any certain nuclide, or you can easily decay nuclides and find activities of the decay chain nuclides, the particles that will be given off at any time, and more. An emphasis is placed on easy to use, but computationally efficient code.
2. SpecUtils: If you have to read in spectral files, includingN42,PCF, SPC, DAT, CHN, etc., this library may do what you want. It decodes many file format variants, and saves to about a dozen different formats. This library can be called from c++, Python, or Java, or if you want a very simple gui to do this, or a command line application, check outcambio (which is powered by this library).

At a minimum, you will need a C++14 compiler, andcmake.

Then to build, you can choose one of two methods to build the code:

1. Usecmake to fetch and build the prerequisites for you, by specifying theInterSpec_FETCH_DEPENDENCIES CMake option toON. This option requires havinggit installed, but is generally the easier of the two options.
2. Build the prerequisites yourself. This option is faster if you plan to rebuild the code many times, as CMake will have less libraries to deal with internally,. You will need to build the following libraries from source (see the instructions in thepatches directory):
   • Wt version 3.7.1. Some patches are included in thepatches directory.
   • boost version 1.78 is
   • The macOS app also requireslibharu, andlibpng.

Included in this repository are some additional C++ libraries that will be built as part of building InterSpecs code.
These libraries includeCuba,Minuit2,muparserx,QR Code generator library,pugixmlandrapidxml, which are in theexternal_libs directory, whilethejs directory contains some ECMAScript libraries, includingjQuery,qTip2, andD3.

Additionally for the Windows or Electron application build, you will neednpm installed to create the application package (see theelectron directory for build instructions).

After compiling boost and Wt from source, clone the InterSpec repository, and from the terminal, run cmake:

git clone --recursive https://github.com/sandialabs/interspec/cd interspecmkdir buildcd buildcmake ..

If you are on Windows, or prefer a GUI, running the CMake for building InterSpec should be likemost other CMake project; you will probably have to fill in paths to boost and Wt manually. Or ifyou have boost or Wt in a non-standard location, you can use a command like:

cmake -DCMAKE_PREFIX_PATH=/path/to/prefix ..

or if boost and Wt are in different directories:

cmake -generator "Visual Studio 15 2017 Win64" \      -DBOOST_ROOT=/path/to/boost \      -DWt_INCLUDE_DIR=/path/to/wt/include \      -DCMAKE_MSVC_RUNTIME_LIBRARY="MultiThreaded$<$<CONFIG:Debug>:Debug>" \      -DBoost_USE_STATIC_LIBS=OFF \      -DBoost_USE_STATIC_RUNTIME=ON \      ..

And then make:

make -j8# orcmake --build . --config Release

If all goes well, InterSpec default to building an executable that when ran from the command line, starts a local web server, you can access then access from your browser. To run InterSpec, use a command like:

./bin/InterSpec.exe --docroot . --http-address 127.0.0.1 --http-port 8080 -c ./data/config/wt_config_localweb.xml

and then point your browser tohttp://localhost:8080.

If you would like build as a native-ish app, see theBUILD_AS_OSX_APP, orBUILD_AS_ELECTRON_APP CMake options, as well as theelectron directory for the latter.For building as a WebApp behind something like nginx or apache, seeBUILD_FOR_WEB_DEPLOYMENT, but please note that InterSpec isnot developed for general internet deployments, so there is likely many issues you would need to consider or address before exposing to untrusted users.There are also a number of CMake options available to control which features get included in InterSpec.

Building for iOS and Android are both possible (see thetarget directory), and these instructions will be updated in the future.

Ethan Chan,William Johnson, David Ka-Ming Lee, Christian Morte, withextensive additional support provided by Noel Nachtigal and Edward Walsh.

This project is licensed under the LGPL v2.1 License - see theLICENSE.md file for details

Copyright 2018 National Technology & Engineering Solutions of Sandia, LLC (NTESS).Under the terms of Contract DE-NA0003525 with NTESS, the U.S. Government retains certain rights in this software.

DISCLAIMER OF LIABILITY NOTICE:The United States Government shall not be liable or responsible for any maintenance,updating or for correction of any errors in the SOFTWARE or subsequent approved versionreleases.THE INTERSPEC (SOFTWARE) AND ANY OF ITS SUBSEQUENT VERSIONRELEASES, SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OFANY KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUTNOT LIMITED TO, ANY WARRANTY THAT THE SOFTWARE WILL CONFORM TOSPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESSFOR A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANYWARRANTY THAT THE SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTYTHAT THE DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THESOFTWARE. IN NO EVENT SHALL THE UNITED STATES GOVERNMENT OR ITSCONTRACTORS OR SUBCONTRACTORS BE LIABLE FOR ANY DAMAGES,INCLUDING, BUT NOT LIMITED TO, DIRECT, INDIRECT, SPECIAL ORCONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM, OR IN ANYWAY CONNECTED WITH THE SOFTWARE OR ANY OTHER PROVIDEDDOCUMENTATION, WHETHER OR NOT BASED UPON WARRANTY, CONTRACT,TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BYPERSONS OR PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WASSUSTAINED FROM, OR AROSE OUT OF THE RESULT OF, OR USE OF, THESOFTWARE OR ANY PROVIDED DOCUMENTATION. THE UNITED STATESGOVERNMENT DISCLAIMS ALL WARRANTIES AND LIABILITIES REGARDINGTHIRD PARTY SOFTWARE, IF PRESENT IN THE SOFTWARE, AND DISTRIBUTESIT "AS IS."

This InterSpec Software was developed with funds from the Science and Technology Directorate of the Department of Homeland Security.

InterSpec apps built by Sandia National Laboratories, do not collect any personal information.

InterSpec locally stores preferences you may change in the app as well as spectra you load, explicitly saved states, and the app state when it is exited. This information does not leave your device, and can be deleted by removing the application data folder in the operating system's standard location for the app.

The only time external network communications is used by InterSpec is when the Map Tool is used, in which case it is only used to request map tiles fromhttps://arcgisonline.com. Users will be warned before doing this, and there is an option to use your own arcgisonline.com account to request the the map tiles under (see the in-app Map Tools help for more information).