instrumentation at cls (presentation to saskatchewan instrumentation society executive) elder matias...

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