diff --git a/src/musredit_qt5/musrWiz/instrument_defs/instrument_def_psi.xml b/src/musredit_qt5/musrWiz/instrument_defs/instrument_def_psi.xml
index f9aa287c9..0c8dde482 100644
--- a/src/musredit_qt5/musrWiz/instrument_defs/instrument_def_psi.xml
+++ b/src/musredit_qt5/musrWiz/instrument_defs/instrument_def_psi.xml
@@ -48,7 +48,7 @@
     <run_name_template>YYYY/lemYY_his_NNNN</run_name_template>
     <beamline>MUE4</beamline>
     <data_file_format>MUSR-ROOT</data_file_format>    
-    <tf name="WEW">
+    <tf name="WEW NPP">
       <no_of_detectors>8</no_of_detectors>
       <fgb_offset>0</fgb_offset>
       <lgb>63000</lgb>
@@ -60,7 +60,19 @@
       <logic_asym_detector name="LR" rel_phase="0.0" forward="1 5" backward="3 7" alpha="1.0"/>
       <logic_asym_detector name="TB" rel_phase="90.0" forward="2 6" backward="4 8" alpha="1.0"/>
     </tf>
-    <tf name="Bpar">
+    <tf name="WEW PPC">
+      <no_of_detectors>8</no_of_detectors>
+      <fgb_offset>0</fgb_offset>
+      <lgb>63000</lgb>
+      <asym_bkg_range>200 1500</asym_bkg_range>
+      <logic_detector name="L" rel_phase="0.0" forward="21 25"/>
+      <logic_detector name="T" rel_phase="90.0" forward="22 26"/>
+      <logic_detector name="R" rel_phase="180.0" forward="23 27"/>
+      <logic_detector name="B" rel_phase="270.0" forward="24 28"/>
+      <logic_asym_detector name="LR" rel_phase="0.0" forward="21 25" backward="23 27" alpha="1.0"/>
+      <logic_asym_detector name="TB" rel_phase="90.0" forward="22 26" backward="24 28" alpha="1.0"/>
+    </tf>
+    <tf name="Bpar NPP">
       <no_of_detectors>4</no_of_detectors>
       <fgb_offset>0</fgb_offset>
       <lgb>63000</lgb>
@@ -69,6 +81,15 @@
       <logic_detector name="R" rel_phase="160.0" forward="3 7"/>
       <logic_asym_detector name="LR" rel_phase="0.0" forward="1 5" backward="3 7" alpha="1.0"/>
     </tf>
+    <tf name="Bpar PPC">
+      <no_of_detectors>4</no_of_detectors>
+      <fgb_offset>0</fgb_offset>
+      <lgb>63000</lgb>
+      <asym_bkg_range>200 1500</asym_bkg_range>
+      <logic_detector name="L" rel_phase="0.0" forward="21 25"/>
+      <logic_detector name="R" rel_phase="160.0" forward="23 27"/>
+      <logic_asym_detector name="LR" rel_phase="0.0" forward="21 25" backward="23 27" alpha="1.0"/>
+    </tf>
     <zf name="NPP">
       <no_of_detectors>4</no_of_detectors>
       <fgb_offset>0</fgb_offset>