Ground motion measurements at the 1 - 2 GeV synchrotron radiation source site

Technical Report · Thu May 01 04:00:00 EDT 1986

DOI:https://doi.org/10.2172/5476203· OSTI ID:5476203

Green, M. A.; Majer, E. L.; More, V. D.; O'Connell, D. R.; Shilling, R. C.

This report describes the technique for measuring ground motion at the site of the 1--2 GeV Synchrotron Radiation Source (Light Source) at Building 6. The results of ground motion measurements at the Light Source site are presented. As comparison, ground motion measurements were made at the Byerly Tunnel, the Bevatron, Blackberry Canyon, and SLAC at the Spear Ring. The primary ground motion at the Light Source site is in a band from 10 to 30 Hz. This noise is local in origin and is not easily transported through LBL soils. The background ground motion is for the most part less than 0.1 microns. Localized truck traffic near Building 6 and the operation of the cranes in the building can result in local ground motions of a micron or more for short periods of time. The background ground motion at Building 6 is between 1 and 2 orders of magnitude higher than ground motion in a quiet seismic tunnel. Ground motion at SLAC and the Bevatron is comparable to ground motions measured at the Building 6 Light Source site. The frequency signature of each site is very different. 8 refs., 20 figs., 1 tab.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5476203
• Report Number(s): LBL-21520; ON: DE90003046
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
FREQUENCY DEPENDENCE
GROUND MOTION
MEASURING METHODS
MECHANICAL VIBRATIONS
MOTION
RADIATION SOURCES
SYNCHROTRON RADIATION SOURCES