FELs and spallation sources
Round-the clock monitoring of vibration and displacement of all safety features in a
facility is necessary to protect the health and well being of the members of the work force.
Particle
accelerators
Cyclic particle accelerators
generate and direct beams with
high flux. Vibration and displacement
monitoring of equipment which undergo
constant beam impact plays a critical role in
the stability and quality of the beam.
• Target wheel position
& safety control
The vibrational stability and the position of a
target wheel must be extensively characterized
for the safety of the whole facility. This requires a
radiation compatible and contactless technique
for measuring displacement.
• Mechanical stability
and vibration measurements
• Split and delay unit -
precise position control of mirrors
From mirror mounts to beam dumps,
many surfaces are in contact with a
high dose of radiation. The tilt and
vibration of these surfaces needs
to be measured with contactless
technology down to nm-precision
to not degrade the beam damage
threshold.
The split-and-delay unit at
XFEL sources creates two beam
pulses that are delayed in time
by a variable amount for pump-
probe and temporal coherence
measurements among others
techniques. The tuning delay
depends on the position and
the angle of the tuning mirrors.
• Position detection
of bending magnets
Bending magnets steer the particles in
the storage ring, and ever increasing
demands on homogenity of the fields
requires precision characterization of
these magnets. Often the measurement
transposes magnetic inhomogenity into
angular deflection.
Delay
Tuning