December 1998
In the first week of December we have tested the local-control electronics on
a modecleaner double pendulum. After some minor problems it worked excellent.
Once the local-control loop was closed no tilt or rotation of the dummy mirror
could be seen. At the site, the cleaning of the central building and the
fabrication of a clean tent took place.
December 7th
GEO 600 has been registered as one of the Projects of the World Exposition
EXPO 2000 in Hannover ("Projects all
over the World in Germany").
Dr. Christian Ahrens, Head of Projects all over the World, National;
Prof. Dr. Herbert Walther, Head of the Max-Planck-Society for
Quantumoptics (MPQ) and Prof. Dr. Karsten Danzmann, Head of the
Intitute for Atomic and Molecular Physics, Dept. of Spectroscopy, with
the Registration Documents; Dr. Bernd Lüdecke, Head of Projects all
over the World, National.
Dr. Ahrens, Prof. Danzmann, and Prof. Walther in front of the GEO 600
posters. (Photos: Clemens Born, Pressestelle Univ. Hannover)
Installation of the Modecleaner Double Pendulums
After the EXPO Registration, the installation of four modecleaner double
pendulums at the GEO site has been started. Cleaning (stacks, top plates,
double-pendulum components) and wiring (local-control modules) are the
main activities at this stage. After the cleaning of the central building,
cleanroom clothes are needed to enter the central area.
Mike, Calum, Jim, Geppo, Paul, and Dave from Glasgow and Andreas from
Garching were a valuable and appreciated help in these days.
