From 7da31993b18a7002fc47bb18970a461bda48d340 Mon Sep 17 00:00:00 2001
From: Alex Jentsch <ajentsch@bnl.gov>
Date: Thu, 24 Jun 2021 23:59:51 +0000
Subject: [PATCH] Update src/SimpleRectangularTracker_geo.cpp

---
 src/SimpleRectangularTracker_geo.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SimpleRectangularTracker_geo.cpp b/src/SimpleRectangularTracker_geo.cpp
index 402ee4a..54b0bd7 100644
--- a/src/SimpleRectangularTracker_geo.cpp
+++ b/src/SimpleRectangularTracker_geo.cpp
@@ -69,7 +69,7 @@ static Ref_t create_detector(Detector& description, xml_h e, SensitiveDetector s
          s_vol.setSensitiveDetector(sens);
         }
         s_vol.setAttributes(description, x_slice.regionStr(), x_slice.limitsStr(), x_slice.visStr());
-        pv = m_vol.placeVolume(s_vol, Position(0, 0, z - zmin - layerWidth / 2 + thick / 2));
+        pv = l_vol.placeVolume(s_vol, Position(0, 0, z - zmin - layerWidth / 2 + thick / 2));
         pv.addPhysVolID("slice", s_num);
       }
 
-- 
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