1. 15/12/10FV 1 Common DCS hardware

2. General ideas Centralized system: o Common computers. Detector dedicated computers (with detector participation) only in case of un-proportionally heavy load o Common infrastructure o The boundary of responsibility between a detector and the DCS teams is an “intelligent unit”: a power supply, ELMB, etc.. Use “off the shelf” solutions: o ELMBs for analogues measurement o PLCs for digital I/O o CAEN and ISEG HV power supplies o WIENER electronics crates and LV power supplies High availability and reliability o Industrial equipment, redundancy and spare parts easy access o UPS for PCs and analog measurements (lifetime at least ½ hour) VF2 10/09/10

3. Layout VF3 15/12/10

4. Computers - 1 Two levels computer structure o High computer power supervision station o Many slots front-end computers Supervision PC o Location: PC farm room was chosen because of availability of the network in case of a power cut (alternative place was the CCC farm area) o Model: we will try to follow the PC farm team choice Common maintenance contract Spare parts Eventual reinforcement with a redundant power supply and hard disk VF4 15/12/10

5. Computers - 2 Front-end PCs: KISS 4U PCI-760 o The model is extensively used by BE/CO in the accelerator control o The PCs are covered by BE/CO maintenance and support contact with KONTRON o Main PC parameters: Processor: Core 2 Duo E6400 Backplane  1 PCI_e x16  4 PCI_e x 1  7 PCI 32 Bit Memory: 4GB DDR2 Redundant HD: STOR-1 2x500GB PSU: Redundant 2x 300W o Two units are purchased and under evaluation VF5 15/12/10

6. Front-end PCs : KISS 4U PCI-760 VF6 15/12/10 Redundant STOR-1 2x500GB HDD Redundant power supply 2x 300W AC

7. Infrastructure: CAN buses ELMBs o PC interface: Kvaser PCIcan 4xHS card (4 procured) o CERN CAN power supply (procured): 2 crates (8 modules per crate) 10 modules + 8 rear panels (2 channels per module) this cover up to 16 lines WIENER crates and power supplies o PC interface: Kvaser PCIcan card ISEG HV power supplies o PC interface: Peak PCAN-PCI Two Channel card Cables: o thick cables down to the area o thin cables dispatched to the sub-detectors VF7 15/12/10

8. VF8 15/12/10 Infrastructure: Ethernet (Alberto) Alberto: “slow control Ethernet devices can be connected to the same switches as the other devices: my plan is to isolate them in a dedicated vlan”.