EMU DAQ Network Sketch

1. Crate-Power Control PC CANbus control/monitoring ~50 Peripheral Crates (~50 10-base FL Dynatem) EMU DAQ Network Sketch Central DAQ PC Controller for EMU-DAQ Counting House? FED Crate Control? Linux! CMS TCS EMU DCS CSC HV FM/TTS EMU DAQ Soft-wire Fast Monitoring line Few gigabit lines in, ~20 100-base T out Ethernet hub or switch 10-base T fan-out hub or switch 100-base T ~20 lines, 1 per PC 10-base T 10-base T 10-base T -to- 10-base FL Converter ~50 converters needed, with 16 per 2U module Local Net Gigabit Fiber CAN bus Key: Fiber optic line ~50 fibers (10-base FL) to peripheral crate Dynatems Other Ethernet 18 Rack PCs + 3 DDU Crates (18 100-base T) (3 10-base T Dynatem) CAN bus Unspecified

2. EMU Electronics DCS Tasks • Peripheral Crate Slow Control • via Dynatem crate controller with 10-base FL Ethernet • FPGA/PROM reconfiguration • Calibration setup and offline reset/reprogram control • DAC output level readout • Temperature readout (CFEB, DMB, …) • Test/Debug mode controls • LVMB readout • DDU Crate Slow Control • via Dynatem or PCI-VME (requires a server PC) crate controller • FPGA/PROM reconfiguration • Calibration setup and offline reset/reprogram control • Test/Debug mode controls • Soft-wire fast monitoring readout to FM system • Warning/Error status register (VME) from DDU

3. Other EMU DCS Tasks • Rack PC Slow Control (via external gigabit line) • Readout of SPY data, stand-alone DAQ data (calibration) • Readout events/histograms and processed calibration tables • Each rack PC reads out ~2 DDUs via local (private) gigabit lines • Crate Power Control/Monitoring (CAN bus?) • On/off crate power control (peripheral and counting house) • Current/voltage/temperature monitoring • Fan activity & humidity monitoring? • CSC High-Voltage Control/Monitoring (Ethernet?) • On/off module (and crate) power control • Current/voltage/temperature monitoring • Fan activity & humidity monitoring? • Ethernet? Fiber-optic or copper?

4. CERN/CMS/EMU DCS Tasks • Gas Flow/Mix/Pressure Monitoring • Service for CSCs provided by CERN? • Required in DAQ readout for track reconstruction? • Interruption of flow should shut down CSC HV? • Radiation Monitoring • Alarm for high-rate conditions • Causes power-off or beam dump? • Database of TID for electronic systems • Localized monitoring? What do we need? • Alignment • Monitored by CMS DAQ? • LVAC (400 Hz), LVDC and converters • Service provided by CMS? • Current/voltage/temperature monitoring? • Fan activity & humidity monitoring?

5. Future EMU DCS Options • 18 Rack PCs may share functions • Distributed peripheral crate Dynatem Slow Control • Each rack PC controls a specific section of the detector • Possible complications for calibration control in TTC system • Many possible network configurations… • Multiple functions may be grouped into one PC • So-called “19th” PC • Could simplify calibration control, but may be difficult to implement… • Surface or counting house? Desktop, rack mount or on top of rack? • Central server/hub for rack PCs • Link to EMU TTC partition control and Main Run Control • Server/hub for peripheral crate Dynatem Slow Control • PCI-VME server functions for DDU crate control • Requires location in counting house near DDU rack • DDU crate 10—base T lines replaced by PCI bus • Crate-Power control/monitoring • CAN bus to PCI conversion • Centralized location for soft-wire link to Fast Monitoring system • Use as primary EMU DCS server? • Requires links to CSC-HV and Central DCS