Work Description

Title: Absolute measurement of thermal noise in a resonant short-range force experiment Open Access Deposited

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Abstract
  • Planar, double-torsional oscillators are especially suitable for short-range macroscopic force search experiments, since they can be operated at the limit of instrumental thermal noise. As a study of this limit, we report a measurement of the noise kinetic energy of a polycrystalline tungsten oscillator in thermal equilibrium at room temperature. The fluctuations of the oscillator in a high-Q torsional mode with a resonance frequency near 1 kHz are detected with capacitive transducers coupled to a sensitive differential amplifier. The electronic processing is calibrated by means of a known electrostatic force and input from a finite-element model. The measured average kinetic energy, Eexp = (2.0 ± 0.3) × 10E-21 J, is in agreement with the expected value of 1/2kBT.
Methodology
  • N/A
Description
  • Public domain version of publication, supporting data sets and analysis programs
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Contact information
Funding agency
  • National Science Foundation (NSF)
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Date coverage
  • 2014-10-03
Citations to related material
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Last modified
  • 09/22/2020
License
To Cite this Work:
Long, J. Absolute measurement of thermal noise in a resonant short-range force experiment [Data set]. Indiana University - DataCORE.

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Files (Count: 1; Size: 9.72 MB)

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Yan_et_al_Class_Quantum_Grav_31_205007_2014.7z Yan_et_al_Class_Quantum_Grav_31_...14.7z 2020-09-22 2020-09-22 9.72 MB Open Access

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