Diamond Vacuum Controls Hugo S Shiers Diamond Vacuum

Diamond Vacuum Controls Hugo S Shiers

Diamond Vacuum Controllers

Gauge interlocks Gauge Slot Control requirement Set Point Pressure Requirement Active 937 A set point CC 1 CC RGA 1 x 10 -4 mbar Fixed, on CC 1 card Adjustable Set Point Range Factory set CC 2 Pirani 1 Pirani 2 A B 1 B 2 10% hysteresis (Cannot read through serial line) Sector valve, vacuum good 1 x 10 -6 mbar SP 1 RGA 1 x 10 -4 mbar Fixed, on CC 2 card 10% hysteresis (Cannot read through serial line) Sector valve, vacuum good 1 x 10 -6 mbar SP 2 MPS 1 x 10 -7 mbar SP 3 (available) MPC Ion pump & TSP, on/off 1 x 10 -2 mbar SP 4 CC 1 control (IMG enable) 1 x 10 -2 mbar 1. 2 x 10 -2 to 2. 7 x 10 -10 mbar Factory set 1. 2 x 10 -2 to 2. 7 x 10 -10 mbar 120 to 2. 7 x 10 -3 mbar MPC Ion pump & TSP, on/off 1 x 10 -2 mbar CC 2 control (IMG enable) 1 x 10 -2 mbar Internal control off if pressure > B 1 1 to 2. 7 x 10 -3 mbar SP 5 120 to 2. 7 x 10 -3 mbar Internal control off if pressure > B 2 1 to 2. 7 x 10 -3 mbar

Valve Control Crates • • • Generic 6 valve and 4 valve control crates using Omron PLC One interlock from each gauge, Pirani and IMG to valve control crate. Crates have service and operational modes Crates control other pneumatic devices such as absorbers and shutters 6 valve controller interfaces with fast valve/flap electronics Each pneumatic valve has own pressure switch. (Need to use de-bounce in PLC program) Pneumatic devices have connector box so that possible to connect to valve control crate via a single 12 way cable, connections for, 4 limit switches, 1 solenoid, and 1 air pressure switch. Valves have 2 interlock switches for open and 2 for close, interlocks used for vacuum control and for MPS. IMGs used to control valves and MPS in operational mode Pirani gauges used to control MPC, pump control units Pirani gauges used to control valves in service mode

Linac interlocks

LTB and Booster

BTS and Injection straight

Storage ring interlocks

Frontend

EPICS Experimental Physics and Industrial Control System EPICS application vx. WORKS IOC (Server) Instrumentation electronics Channel access Network protocol Primary network EDM application Linux O/S Control computers (Client) User

Client Server Model Operator Interface (OPI) Servers Input Output Controllers (IOC)

DIAMOND VACUUM SYSTEM • Overview shows Diamond • Drill down to different levels • Final level vacuum space level is between valves • May connect to individual components • Have global control panels for components • Green indicates healthy • Amber indicates standby • Red indicates fault

Illustration of vacuum display

Frontend vacuum display

Vacuum test stand

Vacuum space global control

Control of RGAs and Data storage • • Need global control of RGAs Global calibration Data storage in Diamond Trend data to be incorporated with general Diamond data • Direct user interface for calibration, leak detection, contamination issues

RGA Network IOC Primary network Serial RGA PC Secondary network Office computer Serial link Control computers Control Room user RGA Electronics RGA Head Vacuum engineer

RGA DISPLAY

Proposed displays gas/distance