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At the session of the DLNP Science and Technology Council held on 15 March 2018 a decision was made to prolong the project “Precision laser metrology for accelerators and detector complexes” for the period of 2019–2021. The authors of the project achieved record parameters of the measuring complex developed for metrological support of modern colliders and large detector complexes.

In the first section of the project it is proposed to create a NETWORK of six JINR Precision Laser Inclinometers for visualizing variations in the landscape under the effect of the propagating surface seismic waves. The resulting data on the deformation of the Earth surface will be used by the feedback control system to correct online the operating parameters of the collider and stabilize spatial positions of the beam focuses in the collision zone. 

Seismic protection of the LHC and detectors is of current importance due to continuous seismic activity in various regions of the Earth. Propagation of seismic waves deforms the Earth surface and may also result in distortion of particle beam trajectories and displacement of beam focuses in the collision zone in the collider.

In the second section the authors propose further development of the earlier proposed Interferometric Distance Meter, which will allow the effect of environmental parameters on the distance measurements to be decreased.

In the third section a possibility of creating a Laser Fiducial Line in the new DLNP Metrology Laboratory is investigated. The Laser Fiducial Line research will be carried out in a few stages for the lines 20, 60, and 130 m long. With the limited Laboratory length (23 m), the lines 60 and 130 m long can only be provided with reflection prisms.

In the fourth section the authors propose a research platform seismically insulated against angular oscillations to be developed on the basis of the Precision Laser Inclinometer. This is of great interest for the ATLAS spectrometric complex, where highly precise reproduction of the spatial arrangement of the spectrometer subsystems and structures is required. The technology for construction of the seismically insulated research platform based on the Precision Laser Inclinometer is supposed to allow a new level of precision to be achieved in physical experiment and instruments.