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Control System Development. Elder Matias Canadian Light Source University of Saskatchewan. Where is Saskatoon?. The CLS. 170.88 m circumference 2.9 GeV DBA lattice with 12-fold period Nominal Tune:  x = 10.22  y = 3.26 E loss per turn: > 0.876 MeV

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Control System Development

Elder Matias

Canadian Light Source

University of Saskatchewan

the cls
  • 170.88 m circumference
  • 2.9 GeV DBA lattice with 12-fold period
  • Nominal Tune:
      • x = 10.22
      • y = 3.26
  • Eloss per turn: > 0.876 MeV
  • Bend magnet radiation:
      • c = 1.6 Å
      • Ec = 7.6 keV
  • x = 18.1 nm•rad
  • Damping times:
    • x = 2.4 ms, y = 3.8 ms, E = 2.7 ms
  • ~10 mm bunch length
staff levels
Staff Levels

Excludes students. Excludes conventional IT, and AC Electrical Services Engineering in ICT of ETS groups.

collaborate and reuse
Collaborate and Reuse
  • Internal Collaboration/Reuse
    • Standardize equipment where it does not impact scientific capability to reduce development and maintenance time
    • Standardize Design Approach, Toolkits and Methods across beamlines and accelerator
    • Common toolkit and tools across all projects
  • External Collaboration/Reuse
    • Based on analysis of requirements versus available systems

e.g., EPICS, RTEMS, IRMIS, ScienceStudio

design package
Design Package
  • A Design Package Includes:
    • PFD Drawings used by Mechanical Engineering to capture system layout and critical parameters, e.g., water flow rates etc.
    • P&ID Drawings used by Controls to define the inputs and outputs of the system and basic relationships
      • Partially based on American Instrumentation Society
    • Wiring diagrams
    • Requirements Document (Developed as required)
    • PLC and EPICS Software
  • All Drawings have a unique drawing number
  • AutoCAD, Inventor, Eagle, Visio
  • Draft Drawings have letter numbering
  • Approved Drawings Alpha Numbering
  • Drawings Review and Approval Process
  • Sketches have Sketch numbers
  • As-built captured on master print
  • Master print in control room, updated by CAD as time permits
change control major changes
Change Control (Major Changes)
  • Major Changes handled through ECR/ECO Process
  • Minor changes handled through MKS Integrity database
change control minor changes
Change Control (Minor Changes)
  • Central Database
  • MKS IntegrityMKS Source
    • Includes source control
    • Web and IDE Based
  • Implements the concept of “Sandboxes” and “Change Packages”
  • Exploring options for using:
    • MKS Requirements
    • MKS Deploy
design for maintainability
Design for Maintainability
  • Design systems for the long term
  • Phase out and replace older equipment whenchanging standards
  • Examples
    • Replacing 68360 IOCwith Moxa IOCs
    • Linac upgrade
    • PS upgrade
system engineering process
System Engineering Process

Conceptual Design



Preliminary Design

Technical Specification

Design Review

Request for Quote

Request for Proposal

Detailed Design

Design Review

Design Review



conventional software engineering used for web services projects



Conventional Software EngineeringUsed for Web Services Projects

Slide prepared by IBM for CLS CANARIE Project

safety critical software
Safety Critical Software
  • Applications:
    • lockup system (ACIS)
    • Oxygen monitoring
    • BMIT human studies (under development)
  • IEC 61508 – SIL 3 based system
  • Subject to CNSC Approval
  • Siemens S7/400 F
  • Redundant Second Chain
  • Fail-safe design
  • Independent Verification
  • ALARP Hazard Analysis
hazard analysis
Hazard Analysis
      • Hutch is not Searched and Secured Prior to Beam Operation
  • Analysis:The level of radiation present in a beamline hutch when the safety shutters are open is of a potentially lethal level and can not be easily detected by a worker in the hutch, it is conceivable that multiple workers could be harmed. To mitigate this hazard it is necessary to introduce an E/E/PE system (called the Access Control and Interlock System (ACIS)) that requires each hutch to be search and secured prior to beam operation through a lockup sequence.
  • Mitigation: