Overview of the process of the system:
- One MFC at the input regulating by stabilizing the density of the gas inside the chamber
- One MFC at the output working at fixed flow (25 nl/min)
- Injection with one MFC that injects when required: it keeps the pressure at the buffer input of the compressor stable
- One MFC as bypass of the compressor to stabilize compressor itself. It should keep the pressure at the buffer output constant
- A set of valves and actuators that are opening and closing depending on the operating modes
Discussion on the components:
- Naming in the P&ID will probably be reviewed by gas team to be consistent with other systems
- Two chamber pressure sensors for two different ranges. Better if digital and if they can be integrated in the PLC
- Discussion about the possibility to add an analog sensor in parallel and use it for redundancy and fail-safe modes
- I/O resolution requirements of at least 16 bit: it should be feasible, to check integration with electrical part and PLC control
Operating modes of the TPC
- Cleaning mode of TPC
- Filling of TPC
- Nominal run of TPC
- Injection self controlling
- Normal evacuation of the gas
- Emergency evacuation of the gas
Storage and data availability
- All parameters and values could be published via dip.
- Parameters will be accessible by operators through the control panel
Actions:
- Gianluca to send an example of FA to AMBER people so that they can understand how the control system application is described
- Check the report done by HSE to see if there is any particular thing to implement in the control system for safety
- In the future review the cabling and electrical part requirements with Patrick Carrié: dedicated visit on site but should be organized when there is no data taking ongoing
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