diff --git a/core-writer/include/RingBuffer.hpp b/core-writer/include/RingBuffer.hpp
index 38c9442..6d77a03 100644
--- a/core-writer/include/RingBuffer.hpp
+++ b/core-writer/include/RingBuffer.hpp
@@ -40,6 +40,18 @@ struct UdpFrameMetadata
     uint16_t n_recv_packets;
 };
 
+struct DetectorFrame
+{
+    // Ring buffer needed data.
+    size_t buffer_slot_index;
+    const size_t frame_bytes_size = 2*32*512*1024;
+
+    uint64_t pulse_id;
+    uint64_t frame_index;
+    uint32_t daq_rec;
+    uint16_t n_received_packets;
+};
+
 template <class T>
 class RingBuffer
 {
diff --git a/core-writer/src/RingBuffer.cpp b/core-writer/src/RingBuffer.cpp
index 750cb54..2d22f40 100644
--- a/core-writer/src/RingBuffer.cpp
+++ b/core-writer/src/RingBuffer.cpp
@@ -300,4 +300,5 @@ size_t RingBuffer<T>::get_slot_size()
 }
 
 template class RingBuffer<FrameMetadata>;
-template class RingBuffer<UdpFrameMetadata>;
\ No newline at end of file
+template class RingBuffer<UdpFrameMetadata>;
+template class RingBuffer<DetectorFrame>;
\ No newline at end of file