DCS for Services and Infrastructure

DCS for Services and Infrastructure ALICE Technical Forum

Introduction[the context] Detectorequipment Services Infrastructuresystems ALICE Technical Forum

Introduction[the context] • Control of equipment to operate the detectors is the responsibility of each sub-detector group • Support and coordination by the ALICE Control Coordination (ACC) • Design of control solutions • Provide tools and guidelines Detectorequipment ALICE Technical Forum

Introduction[the context] • Several infrastructure systems cannot be allocated to a single detector, such as: • Monitoring of environmental parameters (temperature etc.) • Monitoring of magnetic field • Monitoring of spaceframe deformations • Available for the operation of the experiment through DCS Infrastructuresystems ALICE Technical Forum

Introduction[the context] • To operate ALICE, the experiment depends on a number of services: • Gas • Cooling and ventilation • Electricity • Magnets • Safety system • Access control • The only interface to these services from an operational point of view will be through the DCS Services ALICE Technical Forum

Introduction • Overview of the following systems: • Gas and cooling systems → closely linked to detectors • Electricity, racks → controlled by experiment • Magnets, Safety systems and access control→ only limited interaction with the experiment • Infrastructure Thanks to service groups for their input ALICE Technical Forum

Gas systems Primary gas Detector gas systems Detector ALICE Technical Forum

Gas systems[primary gas] • Build and maintained by TS/LEA • Gas Distribution and Supply (GDS) group • Stored in dewars or batteries at the surface (SG or outside) • Information is available to the gas control system, and available to the experiment Primary gas Detector gas systems Detector ALICE Technical Forum

Gas systems[detector gas systems] • Build by the Gas Working Group (GWG) • According to specifications by the detectors • Controls is collaboration GWG and IT/CO Primary gas Detector gas systems Detector ALICE Technical Forum

Gas systems[detector gas systems] • A detector gas system consists of several ‘modules’ • mixer, pump, distribution, purification, etc. • The control of each gas system will be based on a PLC (one per system) • GWG is responsible for control of each gas system • Closed loop control, software in PLC • Guarantees autonomous and safe operation • Detector gas systems are maintained and operated by the GWG • according to well defined operational procedures (decided between GWG and user) • A dedicated supervisory system will provide user interfaces etc. for the local operation (by GWG) of the gas systems • Based on PVSSII, full control for gas experts and maintenance team ALICE Technical Forum

Gas systems[detector gas systems] • Read access to ‘any parameter’ in the gas control system from the DCS • The detectors to express their needs • The experiment (detectors) is expected to have only limited interaction with the gas systems • No actions (control) are expected • ‘Meta commands’ available to the detector and experiment (to trigger a predefined sequence) • E.g. restart after power cut • Some control might be required for special monitoring equipment • E.g. drift velocity measurement ALICE Technical Forum

Gas systems[detector gas systems] TPC gas system being transferred to P2~this week ! Pictures from Stefan Haider (GWG) ALICE Technical Forum

Gas systems ALICE DCS, global supervision and operation (PVSSII) Gateway PC PC GWG ALICE LAN (local) supervisionand operation byGWG (PVSSII) Global commands (restart) Monitoring (status, alarms, data) PLC High Voltagepower supply Interlock Gas System Detector ALICE Technical Forum

Cooling and Ventilation Ventilation (& Air conditioning) Primary Cooling Detector cooling Detector ALICE Technical Forum

Cooling and Ventilation[primary cooling & ventilation] Ventilation (& Air conditioning) • Both operated and maintained by TS/CV • Operated through their control systems (wizcon) • No interaction with experiment expected • Possibility for experiment to get information on these systems through ‘DIP’ (Data Interchange Protocol) Primary Cooling Detector cooling Detector ALICE Technical Forum

Cooling and Ventilation[detector cooling units] • Build and maintained by TS/CV, including controls • ‘Day to day’ operation by the experiment Ventilation (& Air conditioning) Primary Cooling Detector cooling Detector ALICE Technical Forum

Cooling and Ventilation[detector cooling units] • Control of the cooling units will be based on a PLC • TS/CV is responsible for the cooling unit control (closed loop control, software on the PLC). • TS/CV provides a supervisory system for their own use (based on wizcon) during commissioning, test and maintenance. • This allows full control for cooling experts • The baseline assumptions are: • The cooling units will deliver cooling water of a pre-defined temperature (and defined stability) to the sub-detector • This temperature can be defined by the sub-detector (within given limits) • The control system of the cooling unit will take care of the regulation of this temperature • No external system (e.g. DCS) will be involved in the regulation loop ALICE Technical Forum

Cooling and Ventilation[detector cooling units] • DCS will be in charge of ‘day-to-day’ operation • The cooling system will operate autonomously, independent of the status of the DCS • The control by DCS will be on a relatively global level (system level), rather than on the device level • Switch on and off a cooling unit(or switch from one running mode to another) • Switch on/off a single cooling circuit within a cooling unit • A restart command that launches a pre-defined start-up procedure after a power outage • Define the water temperature set-point for each cooling circuit within a cooling unit ALICE Technical Forum

Cooling and Ventilation[detector cooling units] • During normal operation DCS will be mainly monitoring • Any information requested will be available to DCS • parameters, status, alarms • Detectors to express their requirements • Small and slow corrections on water temperature are possible for specific needs (e.g. TPC) • Should not disturb primary control loop ALICE Technical Forum

Recalculatesetpoint TPC-specific Temperaturemonitoring Cooling Circuit 1 Cooling Circuit 2 T1 T3 T2 Cooling and Ventilation[detector cooling units] ALICE DCS, global supervision and operation (PVSSII) PC PC TS/CV ALICE LAN (local) supervision and operation by TS/CV (WIZCON) Global commands (on/off, setpoint) Monitoring (status, alarms, data) PLC Low Voltagepower supply Interlock Water at x°C ± y°C Cooling Unit Detector ALICE Technical Forum

Electricity Transformer “Tableau BT” Primary electricity Is EDF / EOS “Hazemeyer” racks ALICE Technical Forum

Electricity[primary electricity] Transformer “Tableau BT” Primary electricity Is EDF / EOS • Completely installed (refurbished), maintained and operated by TS/EL • Controlled and monitored by their own supervision system (ENS), delegated to TCR • Experiments can get information through DIP “Hazemeyer” racks ALICE Technical Forum

Electricity[distribution to racks] • Distribution of power to the racks • Build (refurbished) and maintained by TS/EL, including controls • ‘Day to day’ operation by the experiment • Each rack (UX) or pair of racks (CR) is individually powered • Electrical protection and control • Under full control of the experiment (through DCS) • “Rack control and monitor” Transformer “Tableau BT” Primary electricity Is EDF / EOS “Hazemeyer” racks ALICE Technical Forum

PLC IO units Electricity[Rack control & monitor] “Hazemeyer” • ALICE DCS, rack control & monitor: • “Rack Control Application” • Switch On/Off a rack • Monitor state of drawers • Monitor health of rack • Temperature, turbine status, smoke, … • Prototype running Max. 23drawers Rack monitor From primary electricity “Hazemeyer drawer” (TDM) Rack ALICE Technical Forum

Electricity[distribution inside the racks] • Distribution in rack balanced over three phases • Monophase power outlets will be of type CEI C13, not ‘swiss’ • Be aware when ordering equipment! • TS/EL does not foresee any controlinside the rack • When power control on the equipment level is required • Use facilities of the equipment (Wiener VME) • Use special power outlets (DAQ for PC powering) ALICE Technical Forum

Electricity ALICE DCS, global supervision and operation (PVSSII) PC PC TS/EL ALICE PLC LAN supervision and operation by TS/EL (ENS) Commands (on/off) Monitoring (status, alarms, data) No commandsonly monitor! Monitoring (status, temperature) PLC Racks “Hazemeyer” ALICE Technical Forum

Magnets • L3 solenoid and dipole • Responsibility ALICE, TS/LEA and PH/DT1 (ex. TA3) • Control systems by PH/DT1 group • Similar for solenoid and dipole • PLC based control system (MCS), hardwired safety system (MSS) • Own supervision system, based on PVSSII • No control expected from experiment • Interaction DCS with MCS via software • Hardwired signals MSS ↔ DSS foreseen ALICE Technical Forum

Magnets ALICE DCS, global supervision and operation (PVSSII) Gateway PC PC PH/DT1 ALICE LAN (local) supervisionand operation byMCR (PVSSII) Monitoring (status, alarms, data) PLC DSS PLC Interlock L3 Solenoid Dipole ALICE Technical Forum

Safety • Has been covered in earlier presentation • Level 3 system by TS/MA: CSAM • CSAM information available to DCS via DIP • ‘Secure’ part of DCS: DSS • Mainly the experiment ‘environment’ • Commissioning (1st phase) next month • Detector ‘internal security’: Interlocks and DCS alarms • Interlocks (hardwired) currently being defined • Discussed at DCS workshop • Need detector feedback soon, as this involves cabling! ALICE Technical Forum

Access control • Controlling the access to the underground areas • System currently under design • Expect common effort (JCOP) for interface to DCS • Very limited interaction with experiment expected ALICE Technical Forum

Infrastructure Control and monitoring of equipment that cannot be directlyallocated to a detector or to the services: • Monitoring of environmental parameters (temperature etc.) • Using a general purpose monitoring system (ELMB) • Details (number of sensors, location etc.) still to be defined • First prototype(s) running at P2 to monitor the environment around the TPC (SXL2) and the TPC chambers (SA2) • Magnetic field monitoring (other than the MCS) • Using a common solution (developed by NIKHEF/ATLAS) • Hall probes, read out by ELMB • Collecting hardware to set up a prototype system (ready for magnet tests) • System with NMR probes under investigation ALICE Technical Forum

Infrastructure • Monitoring of spaceframe deformations • Discussions on interfacing to DCS starting • Radiation monitors (other than for personnel safety) • Starting to collect requirements • ELMB power supplies • Centralized (12V) power distribution for ELMBs • First units available end of the year • Monitored and controlled by DCS ALICE Technical Forum

Summary • Interfaces to the services are relatively well defined • Prototypes are operational or being build • Input from detectors is needed (what information is required for operation) • Services are installing now (Gas, Electricity, DSS) • Controls is following the installation • Infrastructure systems are already running (T monitor) or being prototyped (B field monitor) • Some need an effort to collect requirements ALICE Technical Forum

DCS for Services and Infrastructure