mirror of
https://github.com/openmc-dev/openmc.git
synced 2026-07-24 03:55:38 -04:00
76 lines
2.3 KiB
Python
Executable file
76 lines
2.3 KiB
Python
Executable file
#!/usr/bin/env python
|
|
|
|
"""
|
|
Download ENDF/B-VII.1 ENDF data from NNDC for photo-atomic and atomic
|
|
relaxation data and convert it to an HDF5 library for use with OpenMC.
|
|
This data is used for photon transport in OpenMC.
|
|
"""
|
|
|
|
from __future__ import print_function
|
|
import os
|
|
import sys
|
|
import shutil
|
|
import zipfile
|
|
import argparse
|
|
from io import BytesIO
|
|
|
|
import requests
|
|
|
|
import openmc.data
|
|
|
|
|
|
class CustomFormatter(argparse.ArgumentDefaultsHelpFormatter,
|
|
argparse.RawDescriptionHelpFormatter):
|
|
pass
|
|
|
|
parser = argparse.ArgumentParser(
|
|
description=__doc__,
|
|
formatter_class=CustomFormatter
|
|
)
|
|
parser.add_argument('-c', '--cross-sections',
|
|
help='cross_sections.xml file to append libraries to')
|
|
args = parser.parse_args()
|
|
|
|
base_url = 'http://www.nndc.bnl.gov/endf/b7.1/zips/'
|
|
files = ['ENDF-B-VII.1-photoat.zip', 'ENDF-B-VII.1-atomic_relax.zip']
|
|
|
|
# ==============================================================================
|
|
# DOWNLOAD FILES FROM NNDC SITE
|
|
|
|
if not os.path.exists('photon_hdf5'):
|
|
os.mkdir('photon_hdf5')
|
|
|
|
|
|
for f in files:
|
|
# Establish connection to URL
|
|
print('Downloading {}...'.format(f))
|
|
url = base_url + f
|
|
r = requests.get(url, stream=True)
|
|
zipfile.ZipFile(BytesIO(r.content)).extractall()
|
|
|
|
# ==============================================================================
|
|
# GENERATE HDF5 DATA LIBRARY
|
|
|
|
# If previous cross_sections.xml was specified, load it in
|
|
if args.cross_sections is not None:
|
|
lib_path = args.cross_sections
|
|
library = openmc.data.DataLibrary.from_xml(lib_path)
|
|
else:
|
|
lib_path = os.path.join('photon_hdf5', 'cross_sections.xml')
|
|
library = openmc.data.DataLibrary()
|
|
|
|
for z in range(1, 101):
|
|
element = openmc.data.ATOMIC_SYMBOL[z]
|
|
print('Generating HDF5 file for Z={} ({})...'.format(z, element))
|
|
|
|
# Generate instance of IncidentPhoton
|
|
photo_file = os.path.join('photoat', 'photoat-{:03}_{}_000.endf'.format(z, element))
|
|
atom_file = os.path.join('atomic_relax', 'atom-{:03}_{}_000.endf'.format(z, element))
|
|
f = openmc.data.IncidentPhoton.from_endf(photo_file, atom_file)
|
|
|
|
# Write HDF5 file and register it
|
|
hdf5_file = os.path.join('photon_hdf5', element + '.h5')
|
|
f.export_to_hdf5(hdf5_file, 'w')
|
|
library.register_file(hdf5_file)
|
|
|
|
library.export_to_xml(lib_path)
|