| Topic | Goal | Approach |
| T6.1 Ground motion and vibrations, measurements and analysis | Identify relevant for accelerators ground motion and vibration characteristics. Establish acceptable levels. | Review information on motion level versus condition, site and geology, identify measurement techniques existing and to be developed. Review methods of modeling, analysis and establishing tolerances. Review tolerances for machines. |
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T6.2 Site characteristics and requirements,conventional facilities and equipment requirements |
Establish requirements and preferences for a site in terms of location, geology and ground motion noise level. Establish criteria for the conventional facilities and equipment in terms of added noise at a site. Identify feasibility and required R&D for the mitigation methods. | Translate tolerances into requirements for geology, noise level, etc. Review conventional facilities and equipment in terms of vibration silence. Determine required performance of mitigation methods. |
| T6.3 Tunneling optimization and requirements. | Identify optimal tunneling techniques for big accelerators. | Review existing industrial methods of tunneling and optimize techniques for our particular requirements. |
| T6.4 Counteraction and active systems. | Identify required performance of active stabilization and correction systems; find optimal combination of techniques. Identify possible optimization and required R&D. | Review existing and proposed system. |
| T6.5 Machine alignment, installation | Identify optimal alignment technique for a machine. Identify possible optimization and required R&D. | Review methods used now and suggested for new machines. |