instrumentation at cls (presentation to saskatchewan instrumentation society executive) elder matias...
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Instrumentation at CLS (Presentation to Saskatchewan Instrumentation Society Executive)
Elder MatiasCanadian Light Source
University of Saskatchewan2001-10-20
(updated 2005-03-30)
CLS Control System
• More than 40 PLCs, • 100 computers, • 500 motors• Mix of technologies (including industrial control
hardware and scientific data acquisition hardware)• Software based on a system called EPICS that was
originally developed by Los Alamos. Today EPICS is used to control synchrotrons, accelerator facilities and radio telescopes around the world.
CLS Control System (cont.)
• The computer hardware is interconnected over a mix of Ethernet with some Profibus.
• The control system measures and controls over 55,000 signals, e.g.,– Position of the beam in the storage ring to within 1 m– Magnet set points and feedback values– Temperature sensors, valves, flow switches ...
• All of this data is acquired and logged in real-time.
VLANs for: each beamline, machine control, development, office, visitors
VME Crate
(Reflective Memory)
MicroStep
EROCIOC
RTEMS
FieldDev. RS-232
Devices
OPI
Linux
IOCStep Controller
RTEMS
Motors
MicroStep
OPI
Linux
OPI
Linux
Touch PanelOPI Linux
NetworkServer
(bootp, dhcp,auto restore)
Linux
DataArchiveServer
Linux
AlarmServer
MS-Win
MS-SQLServer
MS-Win
PowerEdgeIOC
Linux
PS BoardsIOC
RTEMS
PowerSupplies
EROCIOC
RTEMS
FieldDev.
EthernetDevices
PLC & GPIB
FieldDev.
MagnetsMotors
1GigBridge
IOC
Linux
FieldDev.
ProfibusPLC
System Architecture
Transition Radiation Monitors
• Non-destructive method of obtaining beam profile information
• A thin aluminized Mylar foil is moved into the beam
• Transition radiation is produced as the beam passes through the foil
• We are working on capturing a video image of the beam, determining the position and shape of the beam and then readjusting steering elements in the accelerator.
Transition Radiation Monitors (cont.)
Transition Radiation Monitors (cont.)
Orbit Correction System
• The beam orbit in the storage ring must be maintained within 1m and the orbit corrected at up to 100 Hz.
• The position of the beam is monitored to within 1m at 56 monitor stations within the storage ring.
• Orbit corrector magnets are used to correct the beam position.
Vibration Monitor
Position of the experiment stable to 1m?• Internal Vibration Sources
– Pumps, compressors, fans ...– Ramping of the booster– Crane, forklift, people walking ...
• External Vibration Sources– Trucks, trains, planes– Wind on building walls– Ocean surf ?
Separate concrete slabs for building, booster, storage ring/ beamlines. How well do the isolation joints in the floor isolate the slabs?
Vibration Monitor (cont.)
• A portable vibration monitoring system was developed to measure building vibration and displacement.
• Custom software to acquire the data and analyse the data is under development.
Vibration Monitor (cont.)
Accelerometer
SCXI-1531PXI-6052EPXI-1010
Mainframe
Accelerometer
SCXI-1531PXI-6052EPXI-1010
Mainframe
PXI-PCI 8335 MXI-3 with fiber cable, up to 200 m long
Computer
SCXI-1349
SCXI-1349
Vibration Monitor (cont.)Acceleration [μm/s ]
0 6 Time [s]
0
-8
8
2
Time [s]
Displacement [μm]
0
2
-2
Acceleration Spectrum [μm/s ]2
0
10
0 100 200 300Frequency [Hz]
42
0 642
CMCF Diffraction PatternUsing MAR Detector
Motion Control
CMCF Beamline