1. CSC 20071 Detector Control System of Silicon Drift Detector in ALICE Jiří Král Czech Technical University

2. CSC 20072 DCS ?? ● provide control of large numbers of electronic devices ● gather information about current state (health) of the experiment ● safety & fast reaction INTERLOCK

3. CSC 20073 The big picture Experiment Control System Offline Data Acquisition Trigger Accelerator

4. CSC 20074 Configuration and calibration data ● Chip enable/disable ● ADC range and calibration data ● V set, I set, I max ● T max, En/Dis ● Ramp speed ● Data smoothing tresholds ● Alarm tresholds ● Enable DAQ frontend and crates

5. CSC 20075 Why is the status data important ● Many things can go wrong – cooling plant breakdown – chip burn / short circuit – power failure ● Just to know, what is going on ● To identify physically not valid information ● To protect hardware

6. CSC 20076 PVSS ● PVSS is a SCADA system by ETM ● Database oriented, database driven ● Interpereted ● Distributed ● Expandable (API) ● IDE ● Monster

7. CSC 20077 Data, where do they go, where do they come from... Recipe Status PVSS

8. CSC 20078 Data path CAN bus ETH kernel driver DIM OPC RS232 ETH I2CI2C Smoothing 15K values @ 1Hz 15K values @ 0.05Hz 8K values @ 0.015Hz

9. CSC 20079 Long way to go 2 years

10. CSC 200710 Finite State Machine

11. CSC 200711 Full system