Laboratory for Fluorescence Dynamics

A NIH research center for biomedical fluorescence spectroscopy at the University of California, Irvine

Globals for Images

SimFCS Features

  • Developed by Enrico Gratton
  • Fluorescence data analysis, simulation, and acquisition
  • Fluorescence Correlation Spectroscopy (FCS)
  • Fluorescence Lifetime Imaging (FLIM) and Phasor plots
  • Förster Resonance Energy Transfer (FRET)
  • Generalized Polarization (GP) and Spectral Phasors
  • Number and Brightness (N&B)
  • Photon Counting Histogram (PCH)
  • Raster and Spatio-temporal Image Correlation Spectroscopy (RICS and STICS)
  • Single Particle and Modulation Tracking (SPT, MT)
  • Image Mean Square Displacement (iMSD)
  • Tutorials

Globals Software for Spectroscopy and Images

Globals, originally developed in the 1980s at the Laboratory for Fluorescence Dynamics (LFD) for the analysis of multiple files from spectroscopy, is now available for the Windows operating system (Globals for Spectroscopy aka GlobalsWE) and for image analysis using the RICS and phasor approaches (Globals for Images aka SimFCS).

SimFCS 4 · 64-bit support

Version 4 of Globals for Images · SimFCS was released on April 29, 2015. It supports 64-bit. This is a free upgrade for licensed users of version 3.

To use SimFCS 4 64-bit on Windows 10, install simfcs4-setup.exe from August 04, 2015 or later and run the "SimFCS Registration" desktop app.

SimFCS 3 · New licenses

Version 3 of Globals for Images · SimFCS was released on May 10, 2013. It uses a new licensing scheme and requires activation with a new serial number.

To upgrade from earlier versions, download and run the latest installer. Backup existing installations before upgrading.

Existing customers who purchased Globals for Images directly from the Laboratory for Fluorescence Dynamics can request a new serial number from Sales and Support at Proof of purchase is required. The new serial number can be used to activate up to 8 computers.

To activate a computer, run 'SimfcsReg.exe' from the SimFCS folder in the Windows start menu. Enter your name and the license serial number provided by the LFD, and then press the 'Register' button. An Internet connection is required during activation.

Download Installers

These are the official installation files of Globals software for the Microsoft Windows 7 and 8 operating systems. The installer include tutorials and help files. Please read the requirements and compatibility notes. Each version may be used free of charge for 30 days. After the 30 days they cannot be used again without purchasing a license.

Download Updates

These files are updated frequently and contain the newest developments. They require an existing full installation created by the latest installers. To update, copy the downloaded executable files to the installation directory, usually "C:\Program Files\SimFCS", "C:\Program Files\SimFCS4", or "C:\Program Files\Globals".

Download Documentation

These files contain documentation for Globals for Images in HTML Help (CHM) format. The latest Tutorials for Globals Software are also available for download.


Minimum Requirements for Globals for Images · SimFCS

  • Operating system: Microsoft Windows 7 Professional
  • CPU: Intel Core 2 Duo
  • Memory: 4 GB (32 bit), 8 GB (64 bit)
  • Display resolution: 1280x1024 pixels
  • OpenGL 2.0 compatible graphics card and display driver
  • Administrator rights for installation and registration
  • Internet connection during license registration

Recommended for image analysis with Globals for Images · SimFCS

  • Operating system: Microsoft Windows 7 or 8.1 Professional 64-bit
  • CPU: Intel Core i5 or better
  • RAM: 8 GB or more
  • Display resolution: 1920x1200 pixels

Minimum Requirements for Globals for Spectroscopy

  • Operating system: Windows XP Pro SP3
  • CPU: Intel Pentium IV
  • Memory: 1 GB
  • Display resolution: 1024x768 pixels
  • Administrator rights for installation

Installation and Compatibility Notes

Globals software does not yet fully support non-English language systems or working with non-administrator privileges:

  • To use SimFCS 4 64-bit on Windows 10, install simfcs4-setup.exe from August 04, 2015 or later and run the "SimFCS Registration" desktop app.
  • The installer programs, globals-setup.exe, simfcs-setup.exe, and simfcs4-setup.exe, must be run with administrator privileges. Either log on as a local administrator before installation or right click the downloaded installer executable and select "Run as" providing administrator credentials. Under Windows 7\8 the installers will automatically prompt for administrator credentials.
  • If Globals software is to be used by non-administrator users, those users must be granted "modify" permissions to the program directories (usually "C:\Program Files\Globals" and "C:\Program Files\SimFCS"). In Windows Explorer, right click on the installation directory and select "Properties" and then the "Security" tab. Select the "Users" group and check the "Allow Modify" permission. This requires administrator privileges. The simfcs installers will automatically try to change those permissions on the installation directory.
  • On non-English Windows 7\8 systems, simfcs.exe might fail with access denied messages. This issue is currently under investigation. As a workaround, copy the C:\Program Files\SimFCS folder from another computer to the user's desktop.
  • Windows Home and Tablet editions are not recommended.
  • The operating system must use US decimal symbol (".") and digit grouping (","). These can be set in the "Regional and Language Options" control panel.
  • It is recommended to use the "Windows Classic" theme with default scale font size (96 dpi). These can be set in the "Display" respectively "Personalization" control panels.
  • In order to use SimFCS 3 in data acquisition mode, devcon.exe must be executed once with administrator privileges. Installation of additional drivers for data acquisition hardware such as Traditional NI-DAQ (Legacy), Becker Hickl TCSPC, ISS cards, and PixeLink might be required. Depending on the type of acquisition hardware, one or more of the following dummy DLL files need to be deleted from the installation directory: nidaq32.dll, PimMegaApi.dll, and spcm32.dll.
  • In case Windows' Data Execution Prevention (DEP) is turned on for all programs and services, the simfcs.exe file must be explicitly excluded from DEP.

Globals software has been reported to run in analysis and simulation mode under the Wine compatibility layer under Linux, as well as Windows 7 running under VirtualPC, VMware Workstation, and the Parallels Desktop for MacOS X. These configurations are not officially supported and cannot be used for data acquisition.