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• 1964 Saskatchewan Accelerator Lab (SAL) was established for chemistry and nuclear physics research.
• 1964 Saskatchewan Accelerator Lab (SAL) was established for chemistry and nuclear physics research.
• 1999 SAL operations were discontinued, and the accelerator was refurbished as an injector for a new storage ring. SR1 Machine Parameters
2.9 GeV DBA lattice with 12-fold period170.88 m
• Phase 1 (operation):– Total of 7 scientific and 2
diagnostics beamlines.
• Phase 2 (commissioning):– Total of 7 additional
beamlines and– building expansion for
medical imaging.
• Phase 3 (pre-design):– Total of 7 additional
beamlines and– building expansion.
Reliability
• Two aspects to reliability:– Delivering quality reproducible beam– Delivering beam when scheduled without interruption
(availability)
Approach to Reliability
• EPICS Based control system• Highly distributed• Extensive use of PLC Equipment• Safety critical applications on a Safety Rated High
Reliability PLC (IEC 61508)• Identify and remove “low reliability” components• Server Virtualization• High degree of Homogeneity• Problem Tracking• Structured ring-out process based on wiring diagrams,
with as-builts and design packages• Human Factors
After Virtualization
Network
Redundant Network Connection
VM Physical Node VM Physical Node
SAN
EMC Storage Array
ISCSI ISCSI
VM Virtual CentreEnvironmet
Redhat
ScientificLinux
Windows
VM Virtual CentreEnvironmet
ScientificLinux
Windows
Homogeneity
• Homogeneity (Oxford Dictionary) 1 of the same kind. 2 consisting of parts all of the same
kind.
• An important principle in the design of the CLS control system and a contributor to reliability on several fronts
Advantages:• Reduced procurement cost (volume discounting).• Staff become familiar and experts in the equipment
being used• reduced design, installation costs,• reduced human error.
• Ability to manage spares inventory more effectively.• More effective management of legacy (discontinued)
equipment.• Outside the accelerator community “The Southwest or
WestJet advantage”.
Homogeneity
Problems:• New staff like what they are use to from their previous
lab.• Vendors of systems, would rather copy an existing
design than use the lab standard.• You don’t always optimize every installation.
Homogeneity
Reducing Mean Time to Repair
• Master Drawing packages for each accelerator and beamline control system are stored in the control room
• Process and Instrumentation Drawings Provide High-level overview of systems
• Managing spares
• Tagging failed modules
MKS Integrity
• Problem Tracking System• Web based• Very useful in commissioning, especially with design
staff working during the day and commissioning staff in the evening
• Also used for “non-conformance” tracking of:– Internal/External QA audit items– Safety Items– Root-Cause-Analysis action items
• We are now evaluating transitioning from MKS Integrity to a preventive maintenance and work order system
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 Control to define the inputs and outs of the system and basic relationships• Partially based on American Instrumentation Society
– Wiring diagrams– Requirements Document (later updated into the
User Manual)
Human Factors
HF bring these various activates together• Human Factors Workscope (Plan)• Incorporated user feedback (MKS)• Reduced complexity (standardization)• Task based support for operations (dash board)• Reduced cognitive memory recall (PID and
associated screens)• Early stages of a systematic verification and validation
against accepted industry HF standards