diff --git a/src/pg_rad/data/detectors.csv b/src/pg_rad/data/detectors.csv
index f5ae726..081a17d 100644
--- a/src/pg_rad/data/detectors.csv
+++ b/src/pg_rad/data/detectors.csv
@@ -1,4 +1,5 @@
 name,type,is_isotropic
 dummy,NaI,true
 LU_NaI_3inch,NaI,true
-LU_HPGe_90,HPGe,false
\ No newline at end of file
+LU_HPGe_90,HPGe,false
+LU_NaIR,NaI,true
\ No newline at end of file
diff --git a/src/pg_rad/data/field_efficiencies/LU_NaIR.csv b/src/pg_rad/data/field_efficiencies/LU_NaIR.csv
new file mode 100644
index 0000000..f5bbea2
--- /dev/null
+++ b/src/pg_rad/data/field_efficiencies/LU_NaIR.csv
@@ -0,0 +1,3 @@
+energy_keV,field_efficiency_m2
+0,0
+662,0.0216
\ No newline at end of file