Post on 11-Jan-2016
Elder MatiasCanadian Light Source
University of Saskatchewan
CLS – Control System Overview
Agenda
• The CLS Facility
• Control System– Remote Access– Safety Critical Software
Applications: Proteins & Disease
Applications: Medical Studies
Applications: Mining & Petroleum
Applications: Better Satellites, Planes and Cars
Applications: Nano-Technology
Why Saskatoon?
• 1964 the Saskatchewan Accelerator Lab (SAL) was established for chemistry and nuclear physics research.
• Saskatoon was chosen for the CLS due to the existing complement of staff and facilities
Machine Layout
What are the CLS Objectives?
170.88 m circumference 2.9 GeV DBA lattice with 12-fold periodNominal Tune:
x = 10.22 y = 3.26
Eloss per turn: > 0.876 MeVBend magnet radiation:
c = 1.6 Å Ec = 7.6 keV
x = 18.1 nm•radDamping times:
x = 2.4 ms, y = 3.8 ms, E = 2.7 ms~10 mm bunch length
MAX-II
TLS-I
BESSY-IIALS
ELETTRA
PLS
SLS(240m)
ANKA
ESRFAPS
Spring-8
CLS (171m)SPEAR3 (240m)
Super-SORLSB
BOOMERANGTLS-II
SOLEIL(2006,354m)
NSLS-II
DIAMOND(2007,562m)
ESRFAPS Spring-8ELETTRA
1
10
100
0 1 2 3 4 5 6 7 8 9Energy(GeV)
Em
ittan
ce(n
m·r
ad)
KSRS (124m)
Agenda
• The CLS Facility
• Control System– Remote Access– Safety Critical Software
Statistics….
• Over 15,000 Data Points• 40+ Telemecanique Momentum PLCs• 9 Siemens S7 300/400/400 F PLCs• 30+ VME Crates & 1 VME Crate• 60+ IOC for Serial Communication• 500+ Stepper Motors• 5 Servo Motors• 20+ Operator Workstations
(http://www.lightsource.ca/operations/controlinstrumentations.php)
Architecture
• EPICS based DCS
• Sub-system control– Machine Protection (Industrial PLCs)– Process Control (Industrial PLCs)– Scientific Data Acquisition (VME)– Motion Control (VME)– Timing System (VXI)
• Operator Workstation and Servers– Scientific Linux
What is EPICS ?
• Experimental Physics and Industrial Control System Platform
• A series of tools and libraries for building distributed control system
• Originally developed by Los Alamos• Widely used in the Accelerator Control and
Radio Telescope Areas• Some industrial use• Open Source
(http://www.aps.anl.gov/epics/)
EPICS
ProfibusTCP/IP
Siemens S7/300 PLC
ModbusTCP/IP
GPIB
RS-232
Channel A
ccess Protocol
IOC
IOC
IOC
IOC
State MachineEngine
CA
CA
CA
CA
CA
Single BoardComputer
CA
Operator WorkstationUser Applications
TouchPanels
CA
CA
Telemecanique Momentum PLC
VME
IOC
CA
Control Room/Areas
• Quad Headed Scientific Linux workstations in the accelerator control room and Dual Headed workstations on the beamlines.
• Scientific Linux (CERN/Fermilab)(https://www.scientificlinux.org/)
• Human Factors Engineering
• EPICS Tools– EDM (Display Manager)– Strip Tool (Data Trending)
• CLS Specific– Audio Alarm Annunciation– Legacy hard-wired controls
from older Linac Equipment
Design – LINAC Master Display
Moxa
• Linux based – Intel X-Scale Processor
• EPICS with the asyn driver and older CLS serial drivers
• Used extensively for RS-232/422/485
• Commercial-off-the-shelf
Orbit Correction
• Beam required to stay within the “golden orbit”• Designed for correction at up to 100 Hz• Digital Signal Condition required to suppress
electrical noise and mechanical vibration• Protects Chamber from Off-orbit Beam at high
current
• VME hardware connected to a Linux PC.
• SIS1100 PCI card <-> fiber optic link <-> SIS3100 VME module
• Maps VME backplane to IOC memory.
• Advantages:– PC can be physically separated from VME crate.– More than one VME crate per PC.– Multiple applications can access the same crate.– High throughput 25 to 80 Mbytes/sec block
transfer.
• Using RTEMS Real-time operating system.(www.rtems.org)
/dev/SIS1100_2(descriptor 2)
VME CRATE 1:Hardware
mapped memory
VME CRATE 2:Hardware
VME CRATE 3:Hardware
Fiber Optic link
FiberOptic Link
Fiber Optic Link
/dev/SIS1100_1(descriptor 1)
/dev/SIS1100_3(descriptor 3)
EPICSApplication
PV record read
routines
PV record write
routines
Linux or RTEMS IOC
sis1100 PCI card
sis1100 PCI card
sis1100 PCI card
VME
• The options: (1) Matlab, (2) SciLab, or (3) root.
• Matlab was selected primarily because of the availability of the accelerator toolbox and staff experience.
• Matlab is commercial, the accelerator toolbox is open source.
• Software originates from ALS and SPEAR III.
• Augmented with other CLS specific utilities.
• Also being used as a commissioning tool for beamlines.
• Special care is required to maintain consistency with other parts of the control system.
Online scripting environment
• Provides fiber optic signal distribution of triggers.
• VXI based hardware• Custom Electronics
used where jitter is a critical factor
• Starting to beused for timeresolveexperiments
Timing System
Safety Critical Software
• Applications:– Lockup system (ACIS)– Oxygen monitoring– BMIT human studies (under development)
• IEC 61508 – SIL 3 based system• Siemens S7/400 F• Redundant Second Chain• Fail-safe design• Independent
Verification
Motion Control
• MaxV VME Controllers
• Power Electronics(Parker + others)
• Software/HardwareMulti-Axis Control
• Average Beamline50-100 motors
• Beamline Controls are based on the same software and hardware as the accelerator systems.
• Each beamline is on a separate virtual network.
• The EPICS Gateway provides links between the different networks.
• Matlab is used for scripting.
Beamlines
Mechanical Services
• Telemecanique MomentumPLCs
• Ring temperature stabilityrequirement +/- 0.1 C.
• Geographically Distributed• Legacy Systems:
– Most 1960s equipment upgradedin 2005
– Most 1980s equipment upgradedin 2004
– Limited number of systemsstill using Invensys DMS DCS
Remote Beamline Access Prototype Architecture
BrowserJavascript/Ajax
Netw
ork
Web Server
Other Services- SOAP, etc.
RDBMS
ApplicationLogic SOAP
Beamline - EPICS
J2EE - SPRING
restUI - jaxscript
Persistence - Spring DB
(DERBY)
Spring MVCEPICS Spring
Bridge
POJOs
Login
Selecting a Scan Region
Lightpath Accelerator controls a software virtual cross-connect that commands UCLP.
User Configurable Light Paths
In effect, CA*Net4 is treated as a single lightpath cross-connect
real device real devicevirtual device
domain manager process
UCLPcommands
The End