Hydrostatic Level Sensors as High Precision Ground Motion Instrumentation for Tevatron and Other Energy Frontier Accelerators

TL;DR

This paper discusses the development and application of Hydrostatic Level Sensors for high-precision ground motion measurements in particle accelerators like the Tevatron, emphasizing their design, calibration, and operational regimes.

Contribution

It introduces the design and technical parameters of Hydrostatic Level Sensors used in energy frontier accelerators, highlighting their role in precise ground motion monitoring.

Findings

Sensors effectively measure low-frequency ground motion.

Calibration procedures ensure high accuracy.

Operational regimes optimize sensor performance.

Abstract

Particle accelerators pushed the limits of our knowledge in search of the answers to most fundamental questions about micro-world and our Universe. In these pursuits, accelerators progressed to higher and higher energies and particle beam intensities as well as increasingly smaller and smaller beam sizes. As the result, modern existing and planned energy frontier accelerators demand very tight tolerances on alignment and stability of their elements: magnets, accelerating cavities, vacuum chambers, etc. In this article we describe the instruments developed for and used in such accelerators as Fermilab's Tevatron (FNAL, Batavia, IL USA) and for the studies toward an International Linear Collider (ILC). The instrumentation includes Hydrostatic Level Sensors (HLS) for very low frequency measurements. We present design features of the sensors, outline their technical parameters, describe test and calibration procedures and discuss different regimes of operation. Experimental results of the ground motion measurements with these detectors will be presented in subsequent paper.