NEA-1638 ANITA-IEAF.

ANITA-IEAF.

ANITA-IEAF is a code package for the activation characterization of materials exposed to neutrons in fusion machines.

The main component of the package is the activation code ANITA-IEAF that computes the radioactive inventory of a material exposed to neutron irradiation, continuous or stepwise. It provides activity, atomic density, decay heat, biological hazard, clearance index and decay gamma-ray spectra at shutdown and for different cooling times.

The main improvements with respect to the previous ANITA-2000 code package are:

1. extension of the neutron energy range up to 55 MeV;

2. the default neutron group structure is the VITAMIN-J+(211 neutron groups);

3. the activation cross section and the decay data libraries were updated on the basis of more recent evaluated data libraries;

4. the decay gamma sources are calculated by ANITA-IEAF in the VITAMIN-J photon structure (42 gamma-ray groups). The decay gamma sources are written both on the standard output and on a distinct file.

The mathematical solution of the problem is given in analytical form using recurrence relations. Double precision arithmetic is used.

Seconds to minutes.

The test cases were executed in about 15 minutes.

In the package is also included the interactive utility module, MODBIN, that builds a direct access binary library from a card image activation cross section file.

Linux

Tested at the NEA Data Bank on:

• PC equipped with Intel(R) Core (TM) at 2.80 GHz, total memory 16.0 GB

• LINUX: UBUNTU 14.04.5LTS 64-bit operating system; GNU FORTRAN 4.8.4

Almost any compiler on any computer.

Tested by the authors with PGI compiler (pgf77 version 11.10) on CentOS 6.4.

Dr. Manuela Frisoni

ENEA - C.R.'E. Clementel'

FSN-SICNUC-PSSN

Via Martiri di Monte Sole, 4

I-40129 BOLOGNA

ITALY