RFQ Inlet Flow Tray
The function of the RFQ Inlet Flow Tray is to receive data and check alarm status from the RFQ Flow Cube mounted on the inlet header as shown in Figure 1. The tray is installed on a Raspberry Pi ZeroW as shown in Figure 2. The Raspberry Pi ZeroW is actually mounted on the underside of the Flow cube as shown in Figure 3.
Because the cooling headers are located far from any Ethernet connection, the tray communicates with the Mirrotron application server via wireless connections. A continuously changing watchdog signal verifies that the communication link is intact. The tray code is written in the Node-RED programming environment. The tray code uses the standard Blinky-Lite template for serial communication using Blinky-Bus as shown in Figure 4.
Figure 1. Inlet Cooling Header.
From left to right: Temperature cube and tray, 5V power, 24V power, Flow cube and tray
Figure 2. Raspberry Pi ZeroW tray along with flow cube
Figure 3. Raspberry Pi ZeroW tray mounted on flow cube
Figure 4. RFQ Inlet Flow Tray Node-RED flow
