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Instrumentation at CLS

Instrumentation at CLS. Elder Matias Canadian Light Source University of Saskatchewan 2001-10-20. CLS Control System. More than 100 computers Mix of technologies (including industrial control hardware and scientific data acquisition hardware)

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Instrumentation at CLS

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  1. Instrumentation at CLS Elder Matias Canadian Light Source University of Saskatchewan 2001-10-20

  2. CLS Control System • More than 100 computers • Mix of technologies (including industrial control hardware and scientific data acquisition hardware) • Software based on a system called EPICS that was originally developed for Star Wars. Today EPICS is used to control synchrotrons, accelerator facilities and radio telescopes around the world.

  3. CLS Control System (cont.) • The computer hardware is interconnected over a mix of Ethernet and Profibus. • The control system measures and controls several thousand 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.

  4. 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.

  5. Transition Radiation Monitors (cont.)

  6. Transition Radiation Monitors (cont.)

  7. Orbit Correction System • The beam orbit in the storage ring must be maintained within 1m and the orbit corrected at approx. 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.

  8. 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?

  9. 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.

  10. Vibration Monitor (cont.) PXI-6052E SCXI-1531 PXI-1010 Mainframe Computer SCXI-1349 Accelerometer PXI-PCI 8335 MXI-3 with fiber cable, up to 200 m long PXI-6052E SCXI-1531 PXI-1010 Mainframe SCXI-1349 Accelerometer

  11. Vibration Monitor (cont.) 2 2 Acceleration [μm/s ] Acceleration Spectrum [μm/s ] 8 10 0 -8 0 0 0 2 4 6 Time [s] 100 200 300 Displacement [μm] Frequency [Hz] 2 0 -2 0 2 4 6 Time [s]

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