Conveners
Other Geodetic and Survey Topics
- Horst Friedsam (FNAL)
Dr
Mika Masuzawa
(KEK)
11/09/2012, 09:05
Other Geodetic and Survey Topics
Paper
A survey for SuperKEKB of the KEKB main ring magnets and monuments was carried using laser trackers and total stations after the Great East Japan Earthquake. The damage from the earthquake was concentrated at the thermal expansion joints of the tunnel. Some magnets moved by more than 5 mm, and the 3 km circumference of the accelerator tunnel seems to have lengthened by several millimeters. ...
Dr
Norio Tani
(Japan Atomic Energy Agency(JAEA), J-PARC Center)
11/09/2012, 09:30
Other Geodetic and Survey Topics
Paper
The accelerator and experimental facilities located in the J-PARC were displaced by the large earthquake on March 11, 2011 in eastern Japan. At J-PARC a surveying network was prepared on the ground to cover the whole facility and GPS survey and leveling of the ground reference points were carried out in order to support recovery works. Also in the accelerator tunnel the device on the beam line...