Output interpretation
All FISPACT-II calculations possess at least two output files: an output file [fileroot].out and a runlog file [fileroot].log. The output contains a sequence of text outputs which are summarised in the following sections.
Contents
Header and run information
The output file always begins with a header identifying the release version of the code:
==============================================================================
| |
| F I S P A C T - I I |
| ------------------- |
| |
| Transmutation-Activation Inventory Code |
| United Kingdom Atomic Energy Authority |
| |
| Release 3.00 September 2015 |
| Copyright (c) 2009-15, UK Atomic Energy Authority |
| |
==============================================================================
------------------------------------------------------------------------------
Source CVS Tag: $Name: Release-3-00-00 $
------------------------------------------------------------------------------
after which a run identification box is printed with a summary of the nuclear data, user input and simulation data. Note that only the initial nuclear data are identified here, although simulations with multiple nuclear data and/or spectra will have these summarised at the end of the output.
Printed after the header information is the box containing unique identifying information for the run, for example with a simulation of the Fusion Neutron Source (FNS) 5 minute irradiation of Inconel-600 at position #3 (part of the FISPACT-II fusion decay heat validation:
=========================================================================================================
| |
| R U N I D E N T I F I C A T I O N I N F O R M A T I O N |
| |
| INITIAL CROSS SECTION DATA |
| Collapsed library timestamp: 15:56:33 24 August 2015 |
| EAF source library label: |
| FLUX file label: Position #3 Normalization Factor |
| |
| DECAY DATA |
| Condensed library timestamp: 15:36:26 24 August 2015 |
| EAF source library label: Decay input from separate files |
| |
| THIS RUN |
| timestamp: 09:26:29 26 August 2015 |
| fileroot : inventory |
| name of FILES file: files |
| FISPACT title: * FNS 5 Minutes Inconel-600 |
| |
| See the inventory.log file |
| and summary details at the end of this file for further information on files used by this run |
| |
=========================================================================================================
ATOMS output data
Each instance of the ATOMS keyword in the input file cause the output of a set of data in the output file:
- Table keys (first ATOMS only)
- The time line
- Iron information (if IRON is used)
- The inventory, including:
- The heading line
- A line for each nuclide above the MIND threshold
- Nuclide table totals
- Inventory summary
- Inventory by element (if NOCOMP is not used)
- Gamma spectra
- Gamma-dose totals
- Dominant nuclide lists (if NOSORT is not used)
- Bremsstrahlung corrections (if BREMSSTRAHLUNG is used)
Table key
Prior to the first inventory tables output initiated by the ATOMS keyword the following key is printed:
------------------------------------------------------------------------------- | NB: IN FOLLOWING TABLES | | ? MEANS CONVERGENCE NOT REACHED FOR NUCLIDE | | & MEANS GAMMA SPECTRUM IS APPROXIMATELY CALCULATED | | # MEANS NUCLIDE IS STABLE | | > MEANS NUCLIDE WAS PRESENT BEFORE IRRADIATION | ------------------------------------------------------------------------------- | | | | V V
This key lists four single character flags that are printed immediately following each nuclide identifier. (Note that the * that was present in legacy FISPACT versions has been made obsolete, as the equilibrium approximation is not required by the LSODES solver used by FISPACT-II):
- ? is the convergence flag whose presence indicates a nuclide with larger uncertainty in its inventory. It is set if the error for the nuclide is greater that 1.5 times the rms norm error set by the rtol and atol flags (see TOLERANCE). If this flag is set for nuclides that appear in the dominant nuclide table, then results should be treated with great caution until convergence studies have been performed or tighter TOLERANCE settings are used to remove the flag.
- & indicates that no gamma-spectral data were present in the decay data library and that the keyword SPEK was used to calculate a spectrum approximately. If most of the gamma dose-rate is produced from nuclides with this flag then the result should be treated with great caution.
- # indicates that the nuclide is stable.
- > indicates that this nuclide was present in the material input, specified by the MASS or FUEL keyword.
Time line
The time line is printed at the start of the output produced at the end of an integration step initiated by the ATOMS or SPECTRUM keyword. It displays the time interval number, the step length and the total elapsed time. The ZERO keyword causes the elapsed time counter to be reset to zero, and the word COOLING to be added to the time line, for example:
* * * TIME INTERVAL 2 * * * * * * * TIME IS 3.0000E+02 SECS OR 5.0000E+00 MINS * * * ELAPSED TIME IS 5.000 m * * * FLUX A
NUCLIDE ATOMS GRAMS Bq b-Energy a-Energy g-Energy DOSE RATE INGESTION INHALATION HALF LIFE
kW kW kW Sv/hr DOSE(Sv) DOSE(Sv) second
H 1 # 2.04274E+10 3.419E-14 0.000E+00 0.000E+00 0.00E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Stable
H 2 # 3.37468E+08 1.129E-15 0.000E+00 0.000E+00 0.00E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Stable
H 3 6.30806E+05 3.159E-18 1.124E-03 1.028E-21 0.00E+00 0.000E+00 0.000E+00 4.720E-14 2.922E-13 3.891E+08
He 3 # 1.49099E+05 7.467E-19 0.000E+00 0.000E+00 0.00E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Stable
He 4 # 3.00423E+09 1.997E-14 0.000E+00 0.000E+00 0.00E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Stable
Ti 46 # 2.97170E+05 2.268E-17 0.000E+00 0.000E+00 0.00E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Stable
Ti 47 # 2.20319E+07 1.718E-15 0.000E+00 0.000E+00 0.00E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Stable
Ti 48 # 8.25936E+05 6.576E-17 0.000E+00 0.000E+00 0.00E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Stable
