Steve Lewis Gas Attenuator 11 December Instrumentation & Controls Steve Lewis 11 December 2006 LCLS Gas Attenuator Preliminary Design Review
Steve Lewis Gas Attenuator 11 December Design and Layout Use of LCLS Standards EPICS PLC (hardware and software) Design Process Suitable hardware chosen by consensus Signals counted and assigned to I/O blocks (PLC, VME) Flow-down requirements derived for PLC, IOC, racks, and network gear
Steve Lewis Gas Attenuator 11 December EPICS (LCLS-provided): Device drivers Device-level GUI elements All other tools and utilities (Warm Start, Data archiving, etc) EPICS (LLNL-provided using guidelines) Names P&ID-level GUI elements Sequences New configuration for Turbomolecular pump controller communications (serial)
Steve Lewis Gas Attenuator 11 December Gas Detector and Gas Attenuator vacuum and gas-flow controls are treated as a single entity PLC provides basic interlocking EPICS sequences choreograph transitions between major states (vacuum-all-through; detectors-only; detectors-and-attenuator; etc) Gas Attenuator command and monitor PVs will be available to experiments (XES/LUSI) PLC reports to MPS for critical items
Steve Lewis Gas Attenuator 11 December Apparatus Temperature Measurement Temperature EPICS Control System (includes PLC) On/Off, Pressure Vacuum Pumps, Gauges, Valves Gain,,Temp,HV DC Bias+ Cooling+Preamp Digitizer Signal Trigger Gas Detector: Block Diagram X,Y,dX,dY,dZ Motion Control Position Motor+ Encoder Power Supply On/Off, Current, Voltage Magnet 5 On/Off, Pressure Gas Pressure Controller Avalanche Photodiode Shape Shaping Amplifier Digitizer Signal Trigger Photodiode Shape Shaping Amplifier Digitizer Signal Trigger Photomultiplier Tube Filter Motion Control Selection Motor+ Encoder Voltage, Current HV Power Supply Note: 2 units required Trigger source not shown Digitizers may be common 2
Steve Lewis Gas Attenuator 11 December
Steve Lewis Gas Attenuator 11 December
Steve Lewis Gas Attenuator 11 December Ethernet IOC Gauge ControllerMass Flow ControllerTurbo Pump Controller Analog and Digital Signals Beamline Gate Valves Mass Flow Unit Turbo Pumps Pirani + Cold Cathode + Baratron Gauges Gate Valve I/O Ethernet Interface ControlNet Interface Flex I/O ControlNet Scroll Pumps Scroll pump control Serial interface GUI PLC RS-232 Magnetic Starter Ladder Logic Server RS-232 Ethernet Interface ControlNet Interface