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)
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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.
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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.
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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
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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.
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Transition Radiation Monitors (cont.)
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Transition Radiation Monitors (cont.)
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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.
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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?
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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.
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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
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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
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CMCF Diffraction PatternUsing MAR Detector
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Motion Control
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CMCF Beamline