diff --git a/detector_control/DectrisSimplonClient.cpp b/detector_control/DectrisSimplonClient.cpp
index 90ea7e39..1170fc51 100644
--- a/detector_control/DectrisSimplonClient.cpp
+++ b/detector_control/DectrisSimplonClient.cpp
@@ -247,6 +247,10 @@ void DectrisSimplonClient::EndAcquisitionFinished() {
 }
 
 void DectrisSimplonClient::StartAcquisition(const DiffractionExperiment& experiment) {
+    SetConfigIfDifferent(SimplonModule::Detector, "photon_energy", experiment.GetIncidentEnergy_keV() * 1e3f, 0.01f);
+    auto thr = experiment.GetEigerThreshold_keV();
+    SetConfigIfDifferent(SimplonModule::Detector, "threshold_energy", thr * 1e3f, 0.01);
+
     SetConfigIfDifferent(SimplonModule::Detector, "count_time", std::chrono::duration<float>(experiment.GetFrameCountTime()).count(), 1e-9);
     SetConfigIfDifferent(SimplonModule::Detector, "frame_time", std::chrono::duration<float>(experiment.GetFrameTime()).count(), 1e-9);
     SetConfigIfDifferent(SimplonModule::Detector, "nimages", experiment.GetFrameNumPerTrigger());