diff --git a/Detectors/Upgrades/ALICE3/TRK/simulation/src/Detector.cxx b/Detectors/Upgrades/ALICE3/TRK/simulation/src/Detector.cxx
index b998050f9440d..482ee207f37b8 100644
--- a/Detectors/Upgrades/ALICE3/TRK/simulation/src/Detector.cxx
+++ b/Detectors/Upgrades/ALICE3/TRK/simulation/src/Detector.cxx
@@ -111,22 +111,21 @@ void Detector::configITS(Detector* its)
 
   std::vector<std::array<double, 2>> layers;
   const int nLayers{12};
-  layers.emplace_back(std::array<double, 2>{0.5f, 15.f});
-  layers.emplace_back(std::array<double, 2>{1.2f, 15.f});
-  layers.emplace_back(std::array<double, 2>{2.5f, 15.f});
-  layers.emplace_back(std::array<double, 2>{3.75f, 62.f});
-  layers.emplace_back(std::array<double, 2>{7.f, 62.f});
-  layers.emplace_back(std::array<double, 2>{12.f, 62.f});
-  layers.emplace_back(std::array<double, 2>{20.f, 62.f});
-  layers.emplace_back(std::array<double, 2>{30.f, 62.f});
-  layers.emplace_back(std::array<double, 2>{45.f, 132.f});
-  layers.emplace_back(std::array<double, 2>{60.f, 132.f});
-  layers.emplace_back(std::array<double, 2>{80.f, 132.f});
-  layers.emplace_back(std::array<double, 2>{100.f, 132.f});
-
-  std::array<float, 12> sensorThicknesses = {50.e-4, 50.e-4, 50.e-4, 50.e-4, 50.e-3, 50.e-3, 50.e-3, 50.e-3, 50.e-3, 50.e-3, 50.e-3, 50.e-3};
+  layers.emplace_back(std::array<double, 2>{0.5f, 30.f});
+  layers.emplace_back(std::array<double, 2>{1.2f, 30.f});
+  layers.emplace_back(std::array<double, 2>{2.5f, 30.f});
+  layers.emplace_back(std::array<double, 2>{3.75f, 124.f});
+  layers.emplace_back(std::array<double, 2>{7.f, 124.f});
+  layers.emplace_back(std::array<double, 2>{12.f, 124.f});
+  layers.emplace_back(std::array<double, 2>{20.f, 124.f});
+  layers.emplace_back(std::array<double, 2>{30.f, 124.f});
+  layers.emplace_back(std::array<double, 2>{45.f, 264.f});
+  layers.emplace_back(std::array<double, 2>{60.f, 264.f});
+  layers.emplace_back(std::array<double, 2>{80.f, 264.f});
+  layers.emplace_back(std::array<double, 2>{100.f, 264.f});
+
+  std::array<float, 12> sensorThicknesses = {100.e-4, 100.e-4, 100.e-4, 100.e-4, 100.e-3, 100.e-3, 100.e-3, 100.e-3, 100.e-3, 100.e-3, 100.e-3, 100.e-3};
   its->setStaveModelOB(o2::trk::Detector::kOBModel2);
-  // its->createOuterBarrel(false);
 
   auto idLayer{0};
   for (auto& layerData : layers) {
diff --git a/macro/build_geometry.C b/macro/build_geometry.C
index fc3e02f2099b1..0f6e749bfb407 100644
--- a/macro/build_geometry.C
+++ b/macro/build_geometry.C
@@ -144,7 +144,7 @@ void build_geometry(FairRunSim* run = nullptr)
 #ifdef ENABLE_UPGRADES
   // upgraded beampipe at the interaction point (IP)
   if (isActivated("A3IP")) {
-    run->AddModule(new o2::passive::Alice3Pipe("A3IP", "Alice 3 beam pipe", !isActivated("TRK"), 0.48f, 0.015f, 44.4f, 3.7f, 0.05f, 44.4f));
+    run->AddModule(new o2::passive::Alice3Pipe("A3IP", "Alice 3 beam pipe", !isActivated("TRK"), 0.48f, 0.015f, 1000.f, 3.7f, 0.05f, 1000.f));
   }
 #endif