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The European Spallation Source Control System Garry Trahern, Head of Integrated Control Systems The ESS site is in Sweden ! Sweden, Denmark & Norway cover 50% of cost Lund! The other 14 member states covers the rest, with the European Investment Bank ICALEPCS11 Garry Trahern 2 Evolution of neutron sources Effective thermal neutron flux n/cm2-s ESS 1020 SNS ISIS MTR 1015 NRX HFBR X-10 1010 ILL HFIR NRU J-PARC ZINP-P/ IPNS WNR KENS FRM-II SINQ ZINP-P CP-2 CP-1 105 1 1930 Berkeley 37-inch cyclotron 350 mCi Ra-Be source Steady State Sources Pulsed Sources Chadwick 1940 1950 1960 1970 1980 1990 2000 2010 2020 (Updated from Neutron Scattering, K. Skold and D. L. Price, eds., Academic Press, 1986) ICALEPCS11 Garry Trahern Neutrons in 2019 ! 5 MW beam power 2.5 GeV protons (H+) 2.9 ms pulses 14 Hz rep rate 50 mA pulse current 704 MHz RF frequency < 1 W/m beam losses 7.5 MW upgradability? No H- injection, No accumulator/compressor ring ! ICALEPCS11 Green field site Garry Trahern 4 Scope of integrated control system Everything from source to target, cryogenics & conventional facilities •Good for long-term maintainability •Get everybody on board at the beginning (when it is not ‘so hard’) •Organizational challenges are faced head-on Ion source Instruments Accelerator Target station IPAC11, 110909 Steve Peggs 5 ESS Master Programme Schedule ESS Program Phases, Gates and Milestones Program level 2009 2010 PG 1 PG 2 Program Initiation 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 PG 4 PG 3 losure Program Set-up Delivery of Contsruction phase First Neutrons to Instruments Pre-construction phase Full beam power on target Construction Technical Design Report Operations Pre Construction Report Accelerator Design Update Installation Prepare to Build Construction Target Design Update Prepare to Build Installation Construction Instruments Conventional Facilities Concepual Design #7 List Design Update Site preparation Design and Manufacturing 22 instruments Installation 1-22 Ground Break First Building Construction ICALEPCS11 Garry Trahern Current activities Prepare-to-Build (P2B) provides 1) Prototyping & 2) Engineering Design Reports, in smooth transition from design to construction. P2B projects Design Updates 2011 2012 Construction projects 2013 2014 2015 International convention signed TDRs with Cost & Schedule P2B DU ICALEPCS11 Const. Const. P2B DU P2B P2B 2016 2017 2018 2019 First neutrons Cryomodule production starts First protons P2B Garry Trahern 7 Projects to model on in terms of controls • SNS • Similar in functionality to ESS • Real-life experience from SNS control system • ITER • multi-lab and multi-nation project just like the ESS • A very large EPICS installation • ITER timeframe - First subsystems integrated: 2013 - Commissioning: 2018 - Operation: 2019 ICALEPCS11 Garry Trahern 8 Some architectural, design and organizational decisions • ESS will use the EPICS control system. • Linux will be the operating system in the ESS controls service tier. • Provide a standardized “Control Box” platform to ESS partner institutions, with first prototype delivery in the design phase. • Release Control Box software and hardware in (approximately) yearly cycles ICALEPCS11 Garry Trahern 9 Control System Architecture – Control Box Control Box Provide a standardized solution before teams develop their own A cornerstone in the 3 year design update phase Central Services Gatway Model Central Room Operator’s workstation Archive Other networks Benefits Encourage consistency between sub-systems ICALEPCS11 IP over Ethernet including target, experimental stations, cryogenics & CF Enable factory acceptance testing of subsystems through control system, Validate technology decisions, Minimize throw-away hardware and software development Garry Trahern Power Supplies Sector A Control Box RF Sector B Control Box Equipment Interface – Control Boxes 10 Ethernet/IP Ethernet Switch Responsibility of the ESS integrators Input Output Controller (IOC) Channel Access EPICS IOC Device Support Device Support Device Support analog inputs Control Box consists of • Hardware • Software (IOC, OPI) • Procedures Responsibility of the subsystem developers/integrators Other subsystems, central services, control room, etc. Control Box A/D module Ethernet Switch PROFINET PLC PLC PLC analog/digital I/O TCP/IP, UDP/IP Ethernet Switch Intelligent Controller Intelligent Controller Intelligent Controller analog/digital I/O Provides a clear split of responsibility among • Control system developers • Subsystem integrators 11 Beam line elements database (BLED) • Automatically generate as much of the control system's components as possible • Principal input: a high-level description of the system (e.g., the accelerator's lattice) Use of system engineering tools and model-driven architecture The database(s) contain: inventory information (equipment and its location, reference to manuals, reference to purchasing information, …) cabling, connectivity and topology information control system process variables, processing rules, … ICALEPCS11 Garry Trahern Hardware platform selection • How to select the hardware platform, main criteria • Usability • Longevity • NOT “top performance” or coolness factor Acceptance by majority in the industry. • Selection process: • Stakeholders: controls, beam instrumentation, RF, … • First prototype decision on October 3: cPCI • Decision revised through prototyping and comparing notes • Early prototype – learn from mistakes • Different groups – different experiences • Objective approach: unified table for all platforms, arguments agreed upon by all groups ICALEPCS11 Garry Trahern 13 Current status • • • • Development environment • ITER’s CODAC is taken as basis • 8 service servers hosting bug tracking, version control, continuous integration … • Scientific Linux user development virtual machines • Cross platform: Windows, Mac OS, Linux Timing, MPS: gathering requirements • Single source clock will be used Naming convention finalized End of 2012: First major deliverables • Technical Design Report • Vertical prototype with Control Box (and manual) … complement each other. ICALEPCS11 Garry Trahern 14 Summary The European Spallation Source will be built in Lund. • The design of the CS should ensure a long life with many upgrades. • The accelerator design, prototyping & construction is being performed in a collaboration. Use code and best practices from similar projects as much as possible • Collaboration with SNS and ITER Provide a working control system from the onset • Control Box, released in yearly cycles ICALEPCS11 Garry Trahern 15