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Coorperations
Max-Planck-Institut für Gravitationsphysik, Leibniz Universität Hannover, Max-Planck-Institut für Quantenoptik,
University of Glasgow, Cardiff University, University of Birmingham, Universitat de les Illes Balears
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March 1999

Inside Modecleaner Tank TCMa

Mirrors MMC1a and MMC1c hovering above their catchers. In the back the small pick-up mirror for the photodiode signal. MMC1a and MMC1c seen through the viewport of the camera. The stainless steel plate at the bottom allows to view mirror BDIMC1.
Mirrors MMC1a and MMC1c
hovering above their catchers.
In the back the small pick-up
mirror for the photodiode signal.		 MMC1a and MMC1c seen through the
viewport of the camera. The stainless
steel plate at the bottom allows to
view mirror BDIMC1.
  
Pick-off mirror, MMC1a, MMC1c, and stainless steel mirror with camera viewport in the back.

Beam director mirror and pick-up mirror for the transmitted beam; on the right hand side the pick-ups for the beam from MMC1c.
Pick-off mirror, MMC1a, MMC1c,
and stainless steel mirror with
camera viewport in the back.


Beam director mirror and pick-up mirror
for the transmitted beam; on the right
hand side the pick-ups for the beam
from MMC1c.


Inside Modecleaner Tank TCMb

Mirror MMC2b with coils and reaction mass. A look through the camera viewport: In front the stainless steel mirror, then mirror MMC2b, behind it the reaction mass with coils; in the back the modecleaner tubes.
Mirror MMC2b with coils
and reaction mass.


 A look through the camera viewport:
In front the stainless steel mirror, then
mirror MMC2b, behind it the reaction mass
with coils; in the back the modecleaner tubes.
   
A view from SSE: At the top the intermediate masses with coil holder; at the bottom mirror MMC1b and it's reaction mass between range limiters. A view from SSW. The thin (50 µm) copper wires are the electricity supply for the coils of the reaction mass.
A view from SSE: At the top
the intermediate masses
with coil holder; at the bottom
mirror MMC1b and it's reaction
mass between range limiters.		 A view from SSW. The thin (50 µm)
copper wires are the electricity
supply for the coils of the reaction mass.




Impressions from the Site in Spring

The tent at the feet of the transmitter mast serves as stores. In the back one can see at left the workshop container. The automobiles surrounding the central building indicate the activities at the site. Part of the covered trench with warning. During the period of heating a current of 600 A flows through the tube.
The tent at the feet of the transmitter
mast serves as stores. In the back one
can see at left the workshop container.
The automobiles surrounding the central
building indicate the activities at the site.		 Part of the covered trench with warning.
During the period of heating a current of
600 A flows through the tube.


   
The control room in the central building. Harald and Benno supervise the activities. Ken and David control the modulation index of the Pockels cell. The vacuum chamber contains the reference cavity of the frequency stabilization.
The control room in the central building.
Harald and Benno supervise the activities.

 Ken and David control the modulation index
of the Pockels cell. The vacuum chamber contains
the reference cavity of the frequency stabilization.