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Idaho National Laboratory

SIMION 3D Version 7.0 Ion Optics Program
SIMION screen shot

SIMION simulates how ions travel within an Ion Cyclotron Resonance Fourier Transform Mass Spectrometer (ICR FTMS). The color-coded lines trace the virtual ions' paths as they enter the test cell (blue), become excited (red), and then stabilize at their cyclotron frequencies (green).

Envisioning Ions with SIMION

SIMION for the PC is an electrostatic lens analysis and design program of an ongoing 15 year effort at the INL.

INL’s sixth major SIMION release, version 7.0, is a greatly enhanced native Win32 program that retains version 6.0’s Graphics User Interface (GUI) while providing full access to Windows video, printers, clipboards, and metafiles. This C based program can model complex problems using an ion optics workbench that can hold up to 200 2D and/or 3D electrostatic/magnetic potential arrays. Arrays can have up to 50,000,000 points. SIMION 3D’s 32 bit GUI provides a highly interactive advanced user environment. All potential arrays are visualized as 3D objects that the user can cut away to inspect ion trajectories and potential energy surfaces.

New user programs features extend versatility and power. New geometry file options support the definition of highly complex array geometry. Extensive algorithm modifications have improved this version’s computational speed and accuracy. PC SIMION traces its roots to D. C. McGilvery’s original SIMION program developed at Latrobe University, Bundoora Victoria, Australia, 1977.

Hardware Requirements

Note: SIMION may work with less if your application is relatively small and simple.

CPU Minimum: 486 or above
Recommended P6, Pentium I or better
RAM Minimum: 32 MB Windows 95/98 or later
64 MB Windows NT or later
Recommended 125 MB or more
Disk Minimum: 1 GB - 200 MB free
Recommended 5 GB or more - most free
Note: SIMION 7.0 will not work properly with the high performance file system (HPFS). Simion 7.0 will only work properly with FAT, protected mode FAT, and New Technology file systems (NTFS).
VIDEO Minimum: 800 x 600 x 256 color with SVGA color monitor
Recommended 1600 x 1200 x 64k color with 21 inch high quality color monitor
PRINTER Minimum: Any printer that supports: Windows 95, 98, or NT or PostScript, HPGL, HPGL2, or PCL5
Recommended A newer printer with RISC speed, color if available.

Software Requirements

Windows 95 or later or Windows NT 4.0 or later.


A demo of Simion 3D 7.0 is available for download (1.1MB).

Obtaining SIMION

SIMION has been copyrighted by BECHTEL BWXT IDAHO, LLC. and is being licensed for distribution through others. The following methods are available for obtaining a copy of SIMION 7.0.

For low cost U.S. Academic and U.S. Government copies:



Low cost copies are provided without user support. Contact the vendor below if a user support is needed.


All Others

If you do not fit in the above categories, you must obtain your copy of SIMION from a nonexclusive licensee of Idaho National Laboratory

Scientific Instrument Services, Inc.
1027 Old York Rd.
Ringoes, NJ 08551-1039
Tel: (908) 788-5550
Fax: (908) 806-6631

Federal Agencies and their contractors can alternatively obtain copies of SIMION 7.0 from the Energy Science and Technology Software Center (ESTSC)

Eligibility - Federal Agencies and Federal Contractors

Contact - Energy Science and Technology Software Center

P.O. Box 1020
Oak Ridge, TN 37831-1020
Tel: (423) 576-2606
Fax: (423) 576-6436
Request program number: 000238IBMPC02

General Inquiries:
Technology Transfer and Commercialization Office, (208) 526-4299

Michael McIlwain, (208) 526-8130,
David L. Miller, (208) 526-9052,