EXPACS is just an EXCEL file. If you have already installed Microsoft ExcelTM in your computer, you can open this file without any installation processes. You must read and agree with the "Conditions for Use" as written below before opening EXPACS.
(3.3MB)You can also download former version below
Version 2.30. (1.4MB, the results are different from the latest version)
Version 3.03. (1.5MB, the results are the same as the latest version, but the function to calculate the angular differential fluxes is not included)
FORTRAN version of EXPACS
For calculating cosmic-ray fluxes for various conditions at once, the FORTRAN version of EXPACS (PARMA model) is also available from the following link. A cosmic ray generator, which determines energy and direction of each terrestrial cosmic ray at a certain condition using random number, is also included in the package. You must read and agree with the "Conditions for Use" before downloading the file.
parma.zip (4.1MB)
C++ version of EXPACS
C++ version of EXPACS translated from the FORTRAN version. You must read and agree with the "Conditions for Use" before downloading the file.
parma_cpp.zip (1.4MB)
If you want to use EXPACS-V, you must read and agree with the "Conditions for Use" as written below, and E-mail to nsed-expacs
jaea.go.jp with your information such as name, institution, and the purpose
of the use of EXPACS-V. Then, we will provide you with the user name and
password to enter the download site of EXPACS-V. We are very sorry for
your inconvenience, but this is the rule of our institute. EXPACS-V cannot be installed in a computer with 64-bit Microsoft Office.If you have already registered, download EXPACS-V here.
2. These program are free softwares; you can redistribute them and/or modify them for any purposes except for commercial use.
3. Japan Atomic Energy Agency is not responsible or liable for any loss or damage of any sort incurred as the result of the use of these softwares.
4. For publishing results obtained by using these softwares, the use of these softwares must be acknowledged explicitly by quoting the following reference and URL:
T. Sato, Analytical Model for Estimating the Zenith Angle Dependence of Terrestrial Cosmic Ray Fluxes, PLOS ONE, 11(8): e0160390 (2016)You must send a copy of any publications using these data to nsed-expacs
T. Sato, Analytical model for estimating terrestrial cosmic ray fluxes nearly anytime and anywhere in the world: Extension of PARMA/EXPACS, PLOS ONE, 10(12): e0144679. (2015)
http://phits.jaea.go.jp/expacs/
jaea.go.jp