diff --git a/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/HoughDataPerSec.h b/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/HoughDataPerSec.h
index 3dcd46c589b5faa452ccdcbf69e02b7cd83aa5af..a18caf8424c9f48d43d1b77b50e599efd0baf7fc 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/HoughDataPerSec.h
+++ b/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/HoughDataPerSec.h
@@ -8,6 +8,7 @@
 #include "AthenaKernel/CLASS_DEF.h"
 #include "MuonLayerHough/MuonLayerHough.h"
 #include "MuonLayerHough/MuonPhiLayerHough.h"
+#include "MuonLayerHough/MuonRegionHough.h"
 #include <map>
 #include <set>
 #include <vector>
@@ -54,9 +55,14 @@ namespace Muon {
       return std::max( nmaxHitsInRegion[0], std::max( nmaxHitsInRegion[1], nmaxHitsInRegion[2] ) );
     }
   };
+
+  struct HoughDataPerSectorVec : public std::vector<HoughDataPerSec>
+  {
+    MuonHough::MuonDetectorHough detectorHoughTransforms;
+  };
 }
 
 CLASS_DEF(Muon::HoughDataPerSec, 163257499, 1)
-CLASS_DEF(std::vector<Muon::HoughDataPerSec>, 118215228, 1)
+CLASS_DEF(Muon::HoughDataPerSectorVec, 61014906, 1)
 
-#endif
\ No newline at end of file
+#endif
diff --git a/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/MuonHoughPatternFinderTool.h b/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/MuonHoughPatternFinderTool.h
index 4c7bcd39c6491c1afbb60d93a7564112aefd2348..56aa17845ba3c968f98da44a50cada98107df4d2 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/MuonHoughPatternFinderTool.h
+++ b/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/MuonHoughPatternFinderTool.h
@@ -58,7 +58,7 @@ namespace Muon {
     virtual StatusCode finalize();
 
     /** find patterns for a give set of MuonPrepData collections + optionally CSC segment combinations */
-    std::pair<std::unique_ptr<MuonPatternCombinationCollection>, std::unique_ptr<std::vector<Muon::HoughDataPerSec>>>
+    std::pair<std::unique_ptr<MuonPatternCombinationCollection>, std::unique_ptr<Muon::HoughDataPerSectorVec> >
     find( const std::vector<const MdtPrepDataCollection*>& mdtCols,  
           const std::vector<const CscPrepDataCollection*>& cscCols,  
           const std::vector<const TgcPrepDataCollection*>& tgcCols,  
diff --git a/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/MuonLayerHoughTool.h b/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/MuonLayerHoughTool.h
index d8afe07d870205a7b857fad16b4a0ff70a165734..536176ffa21ad93bf7c71564c6fe9d977b20934c 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/MuonLayerHoughTool.h
+++ b/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/MuonHoughPatternTools/MuonLayerHoughTool.h
@@ -86,7 +86,8 @@ namespace Muon {
     typedef HoughDataPerSec::RegionPhiMaximumVec RegionPhiMaximumVec;
 
     typedef HoughDataPerSec                       HoughDataPerSector;
-    typedef std::vector<HoughDataPerSector>       HoughDataPerSectorVec;
+
+    typedef Muon::HoughDataPerSectorVec HoughDataPerSectorVec;
     typedef HoughDataPerSectorVec::const_iterator HoughDataPerSectorCit;
 
     
@@ -163,8 +164,8 @@ namespace Muon {
 
     struct State {
       MaximumVec seedMaxima;
-      MuonHough::MuonDetectorHough detectorHoughTransforms;
       std::unique_ptr<HoughDataPerSectorVec> houghDataPerSectorVec { std::make_unique<HoughDataPerSectorVec>() };
+      MuonHough::MuonDetectorHough& detectorHoughTransforms { houghDataPerSectorVec->detectorHoughTransforms };
       std::set<Identifier> truthHits;
       std::set<Identifier> foundTruthHits;
       std::set<Identifier> outputTruthHits;
diff --git a/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/src/MuonHoughPatternFinderTool.cxx b/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/src/MuonHoughPatternFinderTool.cxx
index 40eba039d280e2533d6e025cf4151f93f028ca9a..8cab349ae6abb7182c07933f699b7bd114bdc12e 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/src/MuonHoughPatternFinderTool.cxx
+++ b/MuonSpectrometer/MuonReconstruction/MuonPatternFinders/MuonPatternFinderTools/MuonHoughPatternTools/src/MuonHoughPatternFinderTool.cxx
@@ -156,7 +156,7 @@ namespace Muon {
     return StatusCode::SUCCESS; 
   }
 
-  std::pair<std::unique_ptr<MuonPatternCombinationCollection>, std::unique_ptr<std::vector<HoughDataPerSec>>>
+std::pair<std::unique_ptr<MuonPatternCombinationCollection>, std::unique_ptr<Muon::HoughDataPerSectorVec>>
   MuonHoughPatternFinderTool::find( const std::vector<const MdtPrepDataCollection*>& mdtCols,  
                                     const std::vector<const CscPrepDataCollection*>& cscCols,  
                                     const std::vector<const TgcPrepDataCollection*>& tgcCols,  
diff --git a/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonRecToolInterfaces/MuonRecToolInterfaces/IMuonHoughPatternFinderTool.h b/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonRecToolInterfaces/MuonRecToolInterfaces/IMuonHoughPatternFinderTool.h
index 5eb0e9821c65629b0437e1b28566a900894e5d38..95460bcb8016716d09656f5bc4ab5a79ed1e22f5 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonRecToolInterfaces/MuonRecToolInterfaces/IMuonHoughPatternFinderTool.h
+++ b/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonRecToolInterfaces/MuonRecToolInterfaces/IMuonHoughPatternFinderTool.h
@@ -35,7 +35,7 @@ namespace Muon {
     static const InterfaceID& interfaceID();
 
     /** find patterns for a give set of MuonPrepData collections + optionally CSC segment combinations */
-    virtual std::pair<std::unique_ptr<MuonPatternCombinationCollection>, std::unique_ptr<std::vector<Muon::HoughDataPerSec>>>
+    virtual std::pair<std::unique_ptr<MuonPatternCombinationCollection>, std::unique_ptr<Muon::HoughDataPerSectorVec>>
     find( const std::vector<const MdtPrepDataCollection*>& mdtCols,  
           const std::vector<const CscPrepDataCollection*>& cscCols,  
           const std::vector<const TgcPrepDataCollection*>& tgcCols,  
diff --git a/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MooSegmentCombinationFinder/src/MooSegmentFinderAlg.cxx b/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MooSegmentCombinationFinder/src/MooSegmentFinderAlg.cxx
index c1e0b81a2c5f17cd4d95b73b8df3dbf4ca2993ed..8cbb6bd2c86d0312dc72bd1509e1eb6f4a99d683 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MooSegmentCombinationFinder/src/MooSegmentFinderAlg.cxx
+++ b/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MooSegmentCombinationFinder/src/MooSegmentFinderAlg.cxx
@@ -129,7 +129,7 @@ StatusCode MooSegmentFinderAlg::execute()
 
   // write hough data to SG
   if (output.houghDataPerSectorVec) {
-    SG::WriteHandle<std::vector<Muon::HoughDataPerSec>> handle {m_houghDataPerSectorVecKey};
+    SG::WriteHandle<Muon::HoughDataPerSectorVec> handle {m_houghDataPerSectorVecKey};
     ATH_CHECK(handle.record(std::move(output.houghDataPerSectorVec)));
   } else {
     ATH_MSG_VERBOSE("HoughDataPerSectorVec was empty, key: " << m_houghDataPerSectorVecKey.key());
diff --git a/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MooSegmentCombinationFinder/src/MooSegmentFinderAlg.h b/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MooSegmentCombinationFinder/src/MooSegmentFinderAlg.h
index 4aaf2a3a4f10657941892493fb4e35e2d1ef3e90..2a50b6043d1a02a77a6b8574b54b78ae6430f45d 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MooSegmentCombinationFinder/src/MooSegmentFinderAlg.h
+++ b/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MooSegmentCombinationFinder/src/MooSegmentFinderAlg.h
@@ -74,7 +74,7 @@ class MooSegmentFinderAlg : public AthAlgorithm
   
   SG::WriteHandleKey<MuonPatternCombinationCollection>   m_patternCombiLocation;
   SG::WriteHandleKey<Trk::SegmentCollection>                   m_segmentLocation;
-  SG::WriteHandleKey<std::vector<Muon::HoughDataPerSec>> m_houghDataPerSectorVecKey {this, 
+  SG::WriteHandleKey<Muon::HoughDataPerSectorVec> m_houghDataPerSectorVecKey {this, 
     "Key_MuonLayerHoughToolHoughDataPerSectorVec", "HoughDataPerSectorVec", "HoughDataPerSectorVec key"};
 
   ToolHandle<Muon::IMooSegmentCombinationFinder> m_segmentFinder;     //<! pointer to the segment finder
diff --git a/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MuonSegmentCombinerToolInterfaces/MuonSegmentCombinerToolInterfaces/IMooSegmentCombinationFinder.h b/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MuonSegmentCombinerToolInterfaces/MuonSegmentCombinerToolInterfaces/IMooSegmentCombinationFinder.h
index e2e59b91e51aca5697e09337c4d6a5cedda9b6c8..2a169bff37165ea8b64d8d8b3f55a5040c45aec4 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MuonSegmentCombinerToolInterfaces/MuonSegmentCombinerToolInterfaces/IMooSegmentCombinationFinder.h
+++ b/MuonSpectrometer/MuonReconstruction/MuonSegmentCombiners/MuonSegmentCombinerTools/MuonSegmentCombinerToolInterfaces/MuonSegmentCombinerToolInterfaces/IMooSegmentCombinationFinder.h
@@ -31,7 +31,7 @@ namespace Muon
     struct Output {
       MuonPatternCombinationCollection* patternCombinations;
       Trk::SegmentCollection*           segmentCollection;
-      std::unique_ptr<std::vector<HoughDataPerSec>> houghDataPerSectorVec;
+      std::unique_ptr<Muon::HoughDataPerSectorVec> houghDataPerSectorVec;
 
     Output() : patternCombinations(0),segmentCollection(0) {}
     };