E. MatiasCanadian Light Source

Where is Saskatoon?

• 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)

Trips per Sub-System per Cycle

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

Existing Network Topology

Window

Red Hat Linux Scientific Linux

Scientific LinuxRed Hat Linux

SAN

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)

PID Example

Process Screens based on PID

Accelerator Dash-board

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

The End