Welcome to the home of the MCNPX supporting documents!

Most documents are made available as PDF files. If your browser does not currently support PDF files, a copy of Adobe Acrobat Reader can be downloaded by using this link. Some documents are also available in MS Word format (.doc files). Some documents are controlled and require an MCNPX beta password for access. These controlled documents are marked with "*".

MCNPX Features Summary

The MCNPX Features Summary is a 1-page listing of MCNPX features beyond MCNP4C and MCNPX2.3.0: FeaturesList.doc and FeaturesList.pdf .

MCNPX Cash Awards

We are so confident in the quality of MCNPX that John Hendricks offers cash awards to the first person who finds any bug in the code. He will pay $20 to the first person finding anything that does not meet or exceed the capabilities of MCNPX 2.3.0 and MCNP4C3. European users will be awarded 20 euros. He also will pay a brand new $2 bill for any error in MCNPX that has been inherited from its constituent codes. The list of award winners and the award policy is in Awards.doc and Awards.pdf .

MCNPX 2.6.0 (April 2008)

MCNPX 2.6.0 is the latest general-distribution MCNPX version available from RSICC and OECD/NEA. RSICC is the Radiation Safety Information Computational Center ( http://rsicc.ornl.gov ) in Oak Ridge, Tennessee (pdc@ornl.gov). OECD/NEA is the Organization for Economic Cooperation and Development / Nuclear Energy Agency ( http://www.nea.fr ) in Paris, France (sartori@nea.fr). All major MCNPX features and their user interface added since MCNPX 2.5.0 (April 2005) up to MCNPX 2.6.0 (April 2008) are summarized in "MCNPX 2.6.0 Extensions," LA-UR-08-2216.pdf, LA-UR-08-2216.doc. The document is 73 pages (1 MB) and is a supplement to the MCNP/X manual.

MCNPX 2.5.0 (April 2005)

All major MCNPX features and their user interface added since MCNPX 2.3.0 (April 27, 2002), MCNPX4C2 (LA-UR-01-0858, January 30,2001), and MCNP4C3 (LA-UR-01-2244, March 22, 2001) up to MCNPX 2.5.0 are summarized in "MCNPX Extensions, Version 2.5.0," LA-UR-05-2675.doc and LA-UR-05-2675.pdf. The document is 80 pages (1 MB) and is a supplement to the MCNP/X manual.

User's Manuals

MCNPX 2.6.0 Manual * (LA-CP-07-1473, April, 2008)(3.0 MB)

MCNPX Version 2.5.0 User's Manual * (LA-CP-05-0369, April 2005) (2.5 MB)

For a fuller physics discussion and more information you may also want to get the unrestricted distribution MCNPX 2.3.0 User's Guide (LA-UR-02-2607, April 2002) (1.5 MB).

MCNPX Version 2.3.0 (April 2002)

The MCNPX 2.3.0 User's Guide (LA-UR-02-2607, April 2002) (1.5 MB) describes MCNPX 2.3.0 (April 27, 2002) and MCNPX physics in general. MCNPX 2.3.0 is written in FORTRAN 77 and is based upon MCNPX 2.1.5 (March 16, 2000) and MCNP4B (January 21, 1997).

Documents Cited in the User's Guide

A number of reference papers cited in the MCNPX User's Guide are available as pdf files. These may be access from User Guide References *

Reports and Papers

Gregg W. McKinney et al., "MCNPX 2.6.X Features (2006-2007)", LA-UR-07-2053 (272 KB), M&C/SNA 2007 Conference Workshop, Monterey, CA, April 15-19, 2007.

Gregg W. McKinney et al., "MCNPX Features for 2006", LA-UR-06-8079 (180 KB), Proceedings of the 2006 ANS Winter Meeting, Albuquerque, NM, November 12-16, 2006.

Gregg W. McKinney et al., "MCNPX Overview", LA-UR-06-6206 (278 KB), Proceedings of the 2006 HSSW, FNAL, IL, September 6-8, 2006.

Gregg W. McKinney et al., "MCNPX 2.5.0 - New Features Demonstrated", LA-UR-04-8695 (278 KB), Proceedings of the MC2005 Conference, Chattanooga, Tennessee, April 17-21, 2005.

John S. Hendricks, "MCNPX Model/Table Comparison," LA-14030 (March 2003) (3.3 MB), is a 50-page report demonstrating the MCNPX mix-and-match capability and assessing the ability to use neutron physics models below 20-MeV.

The following papers describe the CEM03 physics model: X-3-RN(U)-07-03 Stepan G. Mashnik, "Implementation of CEM03.01 into MCNP6 and its Verification and Validation Running Through MCNP6. CEM03.02 Upgrade," X-3-RN(U)-07-03 (October 27, 2006) (1.4 MB), LA-UR-06-1764 cover page (.05 MB), LA-UR-06-1764 (.8 MB),

The following papers describe the INCL4 physics model (IntraNuclear Cascade Liege - Cugnon) and ABLA physics model (Deexcitation - Schmidt(GSI)): NuclPhys620_475 (1.5 MB), NuclPhys625_729 (1.2 MB), NuclPhys628_458 (1.0 MB), NuclPhys629_635 (1.0 MB), PhysRevC33_2039 (3.1 MB), PhysRevC66_44615 (.5 MB).

The following describe the MCNP5 photon Doppler broadening capability which is now available in MCNPX: LA-UR-04-0487.pdf and LA-UR-04-0488.pdf . These are LANL memoranda by Avneet Sood, "Doppler Energy Broadening for Incoherent Scattering in MCNP," Part 1 (X-5:AS-02-16, July 31, 2002, 11 pages, .164 MB) and Part 2 (X-5:AS-02-17, July 31, 2002, 23 pages, .158 MB).

Installation Notes:

installation notes for building MCNPX with MPI.

installation notes for building MCNPX with 64-bit integers on Unix systems.

installation notes for the autoconfigure-based installation for MCNPX.

installation notes for installing and executing MCNPX under Windows, MCNPX26B and earlier.

installation notes for installing and executing MCNPX under Windows, MCNPX26C (August 2006) and later.

installation notes for installing and executing MCNPX under UNIX or Linux.

installation notes for installing under the MAC G5 NAG compiler.

installation notes for installing under the MAC G5 IBM compiler.

installation notes for installing on a Mac OSX with the GNU Fortran 95 compiler.

installation notes for installing on Linux with Intel 9.1 or GNU GCC 4.1.1 (gfortran) compiler.

White paper on Component Architectures and MCNPX

A white paper discussing our thoughts and plans on future directions for the software engineering aspects of MCNPX and similar physics codes is available. This discussion covers the potential future for component architectures and modular decomposition of these codes. Any comments and discussion on this topic are welcome. Feel free to send any feedback to the development team, the author, or the the whole community as you feel is appropriate.

Last modified: May 18, 2007 by Gregg McKinney
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