The FIES fiber shaker web camera
The fiber shaker can be viewed using Florence. See these
Please always use the camera to verify that the fiber is moving freely, and
that it is really switched off after use.
The FIES fiber shaker
This page described the second-generation fiber shaker, a renovated foot-massage unit.
The FIES fiber shaker is situated under the metal galery in the
basement of the telescope.
Picture 3 (best)
Using the FIES fiber shaker
The shaker's electronics are accessible through our ethernet network.
Graham provided a script that accesses the fiber shaker; the script is
located in ~staff/FIES/foot_moverORM.py on verushka, and supports the
shake- and the vibration modes of the device. The shaker speed in
foot_moverORM is reversed wrt fies.shaker; please use the
latter to operate the device.
There is a sequencer command called fies.shaker that should be
used to switch the shaker on or off. Note that this only supports the
shake mode (low frequency, high amplitude), the vibration mode is not yet
implemented in the sequencer.
fies.shaker <speed> with speed in [off,0,1,2,3,4,5,6,7,8,9]
The slowest speed (speed=1) corresponds to ??Hz, and the fastest speed (speed=9)
corresponds to about 3.5 Hz.
There is no timer so it will run forever, or until the machine falls a
part, you give a stop command fies.shaker off, or until the power
The electronics do not yet allow status queries, this is planned for
the near future. In any case, use the web camera to check that all is
fine when shaking, and that the shaker is really switched-off after use.