From 526fbebb9aea669221145b30dafc62a020bf05d4 Mon Sep 17 00:00:00 2001
From: michaelmackenzie <michaelmackenzie@u.northwestern.edu>
Date: Fri, 24 Jul 2026 10:01:00 -0500
Subject: [PATCH 1/2] Fix neutron spectrum bin alignment

---
 JobConfig/pileup/prolog.fcl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/JobConfig/pileup/prolog.fcl b/JobConfig/pileup/prolog.fcl
index 29b0076a..c5d014d5 100644
--- a/JobConfig/pileup/prolog.fcl
+++ b/JobConfig/pileup/prolog.fcl
@@ -297,6 +297,7 @@ Pileup: {
     spectrum: {
       spectrumShape: tabulated
       spectrumFileName: "Offline/EventGenerator/data/neutronSpectrum.txt"
+      BinCenter : true
     }
   }
 

From b97581beb3d191ae97294e40e1ff2018451abec8 Mon Sep 17 00:00:00 2001
From: michaelmackenzie <michaelmackenzie@u.northwestern.edu>
Date: Fri, 24 Jul 2026 10:08:45 -0500
Subject: [PATCH 2/2] Add high KE proton fcl, fix neutron calo fcl output name

---
 JobConfig/primary/MuCapNeutronTailCalo.fcl |  2 +-
 JobConfig/primary/MuCapProtonTail.fcl      | 26 ++++++++++++++++++++++
 JobConfig/primary/MuCapProtonTailCalo.fcl  | 10 +++++++++
 Tests/MuCapProtonTail.fcl                  |  4 ++++
 4 files changed, 41 insertions(+), 1 deletion(-)
 create mode 100644 JobConfig/primary/MuCapProtonTail.fcl
 create mode 100644 JobConfig/primary/MuCapProtonTailCalo.fcl
 create mode 100644 Tests/MuCapProtonTail.fcl

diff --git a/JobConfig/primary/MuCapNeutronTailCalo.fcl b/JobConfig/primary/MuCapNeutronTailCalo.fcl
index 2aeb1843..00e17294 100644
--- a/JobConfig/primary/MuCapNeutronTailCalo.fcl
+++ b/JobConfig/primary/MuCapNeutronTailCalo.fcl
@@ -7,4 +7,4 @@
 
 physics.producers.generate.decayProducts.czmin : 0.99
 physics.producers.generate.decayProducts.czmax : 1.
-outputs.PrimaryOutput.fileName: "dts.owner.MuCapNeutronCalo.version.sequencer.art"
+outputs.PrimaryOutput.fileName: "dts.owner.MuCapNeutronTailCalo.version.sequencer.art"
diff --git a/JobConfig/primary/MuCapProtonTail.fcl b/JobConfig/primary/MuCapProtonTail.fcl
new file mode 100644
index 00000000..2cedee4b
--- /dev/null
+++ b/JobConfig/primary/MuCapProtonTail.fcl
@@ -0,0 +1,26 @@
+#
+# Generate high KE muon capture protons
+#
+# Original author: Michael MacKenzie, 2026
+#
+#include "Production/JobConfig/primary/TargetStopParticle.fcl"
+
+physics.producers.generate : {
+  module_type : SingleProcessGenerator
+  inputSimParticles: TargetStopResampler
+  stoppingTargetMaterial : "Al"
+  decayProducts :
+  {
+    tool_type : MuCapProtonGenerator
+    spectrumVariable : kineticEnergy
+    spectrum : {
+      spectrumShape : ejectedProtons
+      elow : 60. # Only simulate the high energy tail
+      nbins: 1000
+    }
+  }
+  verbosity : 0
+}
+
+physics.producers.FindMCPrimary.PrimaryProcess : "mu2eMuonCaptureAtRest"
+outputs.PrimaryOutput.fileName: "dts.owner.MuCapProtonTail.version.sequencer.art"
diff --git a/JobConfig/primary/MuCapProtonTailCalo.fcl b/JobConfig/primary/MuCapProtonTailCalo.fcl
new file mode 100644
index 00000000..434ab3db
--- /dev/null
+++ b/JobConfig/primary/MuCapProtonTailCalo.fcl
@@ -0,0 +1,10 @@
+#
+# Generate high energy muon capture protons, aimed at the calorimeter
+#
+# Original author: Michael MacKenzie, 2026
+#
+#include "Production/JobConfig/primary/MuCapProtonTail.fcl"
+
+physics.producers.generate.decayProducts.czmin : 0.99
+physics.producers.generate.decayProducts.czmax : 1.
+outputs.PrimaryOutput.fileName: "dts.owner.MuCapProtonTailCalo.version.sequencer.art"
diff --git a/Tests/MuCapProtonTail.fcl b/Tests/MuCapProtonTail.fcl
new file mode 100644
index 00000000..bd714ec4
--- /dev/null
+++ b/Tests/MuCapProtonTail.fcl
@@ -0,0 +1,4 @@
+#include "Production/JobConfig/primary/MuCapProtonTailCalo.fcl"
+#include "Production/Tests/MuonStopConfig.fcl"
+
+services.TFileService.fileName: "nts.owner.test.version.sequencer.root"