From a284821330619dc3d5b2f4c29339eedb71bb0ad0 Mon Sep 17 00:00:00 2001
From: dthisse <damien.thisse@cea.fr>
Date: Mon, 2 Dec 2024 18:12:03 +0100
Subject: [PATCH] Minor changes in Actar.cc in nps (drift speed and electric
field)
---
NPSimulation/Detectors/Actar/Actar.cc | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/NPSimulation/Detectors/Actar/Actar.cc b/NPSimulation/Detectors/Actar/Actar.cc
index 15ee6ccba..d5374006e 100644
--- a/NPSimulation/Detectors/Actar/Actar.cc
+++ b/NPSimulation/Detectors/Actar/Actar.cc
@@ -269,7 +269,7 @@ G4LogicalVolume* Actar::BuildDetector() {
MPT->AddConstProperty("DE_YIELD", 3e-1, true);
// MPT->AddConstProperty("DE_AMPLIFICATION",2,true);
MPT->AddConstProperty("DE_ABSLENGTH", 1 * pc, true);
- MPT->AddConstProperty("DE_DRIFTSPEED", 0.8 * cm / microsecond, true);
+ MPT->AddConstProperty("DE_DRIFTSPEED", 1.28 * cm / microsecond, true);
MPT->AddConstProperty("DE_TRANSVERSALSPREAD", 2e-5 * mm2 / ns, true);
MPT->AddConstProperty("DE_LONGITUDINALSPREAD", 4e-6 * mm2 / ns, true);
DriftGasMaterial->SetMaterialPropertiesTable(MPT);
@@ -349,7 +349,7 @@ G4LogicalVolume* Actar::BuildDetector() {
logicWindows,
"ActarEntranceWindows",m_SquareDetector,false,0);*/
- G4ElectricField* field = new G4UniformElectricField(G4ThreeVector(0.0, -400 * volt / cm, 0.0));
+ G4ElectricField* field = new G4UniformElectricField(G4ThreeVector(0.0, -70 * volt / cm, 0.0));
// Create an equation of motion for this field
G4EqMagElectricField* Equation = new G4EqMagElectricField(field);
G4MagIntegratorStepper* Stepper = new G4ClassicalRK4(Equation, 8);
--
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