New standard simulation with intensity set to simplify converging of fitting functional tests

Core/StandardSamples/SimulationFactory.cpp

@@ -158,4 +158,9 @@ SimulationFactory::SimulationFactory()
     registerItem("BasicDepthProbe",
                  StandardSimulations::BasicDepthProbe,
                  "Basic 20x20 depth probe simulation with [0, 1] deg angle and [-100, 100] z span");
+
+    registerItem("MiniGISASFit",
+                 StandardSimulations::MiniGISASFit,
+                 "GISAS simulation with small 25x25 detector and phi[-2,2], theta[0,2]. "
+                 "Beam intensity is set");
 }

Core/StandardSamples/StandardSimulations.cpp

@@ -488,3 +488,15 @@ DepthProbeSimulation* StandardSimulations::BasicDepthProbe()
 
     return result.release();
 }
+
+//! Simulation with fitting.
+//! Beam intensity set to provide reasonably large values in detector channels.
+GISASSimulation* StandardSimulations::MiniGISASFit()
+{
+    GISASSimulation* result = new GISASSimulation();
+    result->setDetectorParameters(25, -2.0*Units::degree, 2.0*Units::degree,
+                                  25, 0.0*Units::degree, 2.0*Units::degree);
+    result->setBeamParameters(1.0*Units::angstrom, 0.2*Units::degree, 0.0*Units::degree);
+    result->setBeamIntensity(1e6);
+    return result;
+}

Core/StandardSamples/StandardSimulations.h

@@ -54,6 +54,7 @@ BA_CORE_API_ GISASSimulation* MiniGISASMonteCarlo();
 BA_CORE_API_ GISASSimulation* SphericalDetWithRoi();
 BA_CORE_API_ GISASSimulation* RectDetWithRoi();
 BA_CORE_API_ GISASSimulation* ConstantBackgroundGISAS();
+BA_CORE_API_ GISASSimulation* MiniGISASFit();
 
 // Specular simulation tests:
 BA_CORE_API_ SpecularSimulation* BasicSpecular();