Instrumentation at CLS (Presentation to Saskatchewan Instrumentation Society Executive) Elder Matias Canadian Light Source University of Saskatchewan (updated )

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 EROC IOC RTEMS Field Dev. RS-232 Devices OPI Linu x IOC Step Controller RTEMS Motors MicroStep OPI Linu x OPI Linu x Touch Panel OPI Linux Network Server (bootp, dhcp, auto restore) Linux Data Archive Server Linux Alarm Server MS-Win MS-SQL Server MS-Win PowerEdge IOC Linux PS Boards IOC RTEMS Power Supplies EROC IOC RTEMS Field Dev. Ethernet Devices PLC & GPIB Field Dev. MagnetsMotors 1Gig Bridge IOC Linux Field Dev. Profibus PLC 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.)

Orbit Correction System The beam orbit in the storage ring must be maintained within 1  m and the orbit corrected at up to 100 Hz. The position of the beam is monitored to within 1  m 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 1  m? 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-6052E PXI-1010 Mainframe Accelerometer SCXI-1531PXI-6052E PXI-1010 Mainframe PXI-PCI 8335 MXI-3 with fiber cable, up to 200 m long Computer SCXI-1349

Vibration Monitor (cont.) Acceleration [μm/s ] 06Time [s] Time [s] Displacement [μm] Acceleration Spectrum [μm/s ] Frequency [Hz]

CMCF Diffraction Pattern Using MAR Detector

Motion Control

CMCF Beamline