fns chain is tendl not endf

Author: shimwell

README.md

@@ -114,7 +114,7 @@ A few categories of scripts are available:
 
 | Script name | Library | Release | Branching options|
 |-|-|-|-|
-|download_endf_chain | ENDF/B | VII.1<br>VIII.0 | None<br>SFR<br>PWR
+|download_chain | ENDF/B<br><br><br>TENDL | VII.1<br>VIII.0<br><br>2019 | None<br>SFR<br>PWR<br><br>FNS |
 
 <!-- | Sctipt name | Library | Release | Download available | Download ENDF files and generates XML chain files |
 |-|-|-|-|-|

pyproject.toml

@@ -77,4 +77,4 @@ reduce_chain = "openmc_data.depletion.reduce_chain:main"
 
 download_endf = "openmc_data.download.download_endf:main"
 download_tendl = "openmc_data.download.download_tendl:main"
-download_endf_chain = "openmc_data.download.download_endf_chain:main"
+download_chain = "openmc_data.download.download_chain:main"

…nmc_data/download/download_endf_chain.py …c/openmc_data/download/download_chain.pysrc/openmc_data/download/download_endf_chain.py renamed to src/openmc_data/download/download_chain.py src/openmc_data/download/download_endf_chain.py renamed to src/openmc_data/download/download_chain.py

@@ -37,20 +37,30 @@ class CustomFormatter(
 parser.add_argument(
     "-r",
     "--release",
-    choices=["b7.1", "b8.0"],
-    default="b8.0",
+    choices=["b7.1", "b8.0", "2019"],
+    default="2019",
     help="The nuclear data library release version. The currently supported "
          "options are b7.1 and b8.0.",
 )
+parser.add_argument(
+    "-l",
+    "--library",
+    choices=["endf", "tendl"],
+    default="tendl",
+    help="The nuclear data library. The currently supported options are endf and tendl",
+)
 parser.add_argument(
     "-b",
     "--branching_ratios",
     choices=["None", "SFR", "PWR", "FNS"],
     default="FNS",
     help="The nuclear data library release version. The currently supported "
-         "options are b7.1 and b8.0 with branching ratio options of None, SFR "
-         "(sodium fast reactor), PWR (pressurized water reactor) or FNS "
-         "(fusion neutron source)",
+         "options are endf b7.1 and b8.0 with branching ratio options of None, "
+         "SFR (sodium fast reactor), PWR (pressurized water reactor) or tendl "
+         "2019 with FNS (fusion neutron source) branching ratio. The tendl "
+         "chains are processed with neutron induced fission yields from"
+         "ENDF/B-VIII.0. There is an option to use JEFF 3.3 if you generate"
+         "your own chain file with the generate_tendl_chain command line tool.",
 )
 
 parser.set_defaults()
@@ -59,11 +69,10 @@ class CustomFormatter(
 
 def main():
 
-    library_name = 'endf'
-    details = all_chain_release_details[library_name][args.release][args.branching_ratios]["chain"]
+    details = all_chain_release_details[args.library][args.release][args.branching_ratios]["chain"]
 
     if args.filename is None:
-        args.filename = Path("-".join(["chain", library_name, args.release])+".xml")
+        args.filename = Path("-".join(["chain", args.library, args.release])+".xml")
         print(f'Using default filename {args.filename}')
 
     download(

src/openmc_data/urls_xml.py

@@ -33,6 +33,10 @@
                     "url": "https://github.com/openmc-data-storage/openmc_data/raw/main/src/openmc_data/depletion/chain_endf_b8.0_pwr.xml"
                 }
             },
+        }
+    },
+    "tendl": {
+        "2019": {
             "FNS": {
                 "chain": {
                     "url": "https://github.com/jbae11/openmc_activator/raw/refs/heads/main/fns_spectrum.chain.xml"