Make sure from_ace classmethods get correct type of ACE table

openmc/data/neutron.py

@@ -588,6 +588,9 @@ class IncidentNeutron(EqualityMixin):
 
         # If mass number hasn't been specified, make an educated guess
         zaid, xs = ace.name.split('.')
+        if not xs.endswith('c'):
+            raise TypeError(
+                "{} is not a continuous-energy neutron ACE table.".format(ace))
         name, element, Z, mass_number, metastable = \
             get_metadata(int(zaid), metastable_scheme)
 

openmc/data/photon.py

@@ -549,7 +549,9 @@ class IncidentPhoton(EqualityMixin):
             ace = get_table(ace_or_filename)
 
         # Get atomic number based on name of ACE table
-        zaid = ace.name.split('.')[0]
+        zaid, xs = ace.name.split('.')
+        if not xs.endswith('p'):
+            raise TypeError("{} is not a photoatomic transport ACE table.".format(ace))
         Z = get_metadata(int(zaid))[2]
 
         # Read each reaction

openmc/data/thermal.py

@@ -600,6 +600,8 @@ class ThermalScattering(EqualityMixin):
 
         # Get new name that is GND-consistent
         ace_name, xs = ace.name.split('.')
+        if not xs.endswith('t'):
+            raise TypeError("{} is not a thermal scattering ACE table.".format(ace))
         name = get_thermal_name(ace_name)
 
         # Assign temperature to the running list