Measurement of the quality factor of a new low-frequency differential accelerometer for testing the equivalence principle | Zendy

V. Iafolla | Zendy; Carlo Lefevre | Zendy; Emiliano Fiorenza | Zendy; Francesco Santoli | Zendy; S. Nozzoli | Zendy; Carmelo Magnafico | Zendy; Marco Lucente | Zendy; David Lucchesi | Zendy; Roberto Peron | Zendy; I. I. Shapiro | Zendy; Sheldon L. Glashow | Zendy; Enrico Lorenzini | Zendy

Open Access

Measurement of the quality factor of a new low-frequency differential accelerometer for testing the equivalence principle

Author(s) -

V. Iafolla,

Carlo Lefevre,

Emiliano Fiorenza,

Francesco Santoli,

S. Nozzoli,

Carmelo Magnafico,

Marco Lucente,

David Lucchesi,

Roberto Peron,

I. I. Shapiro,

Sheldon L. Glashow,

Enrico Lorenzini

Publication year - 2014

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.4861349

Subject(s) - accelerometer , equivalence (formal languages) , low frequency , differential (mechanical device) , quality (philosophy) , computer science , acoustics , physics , mathematics , telecommunications , discrete mathematics , thermodynamics , quantum mechanics , operating system

A cryogenic differential accelerometer has been developed to test the weak equivalence principle to a few parts in 10^15 within the framework of the general relativity accuracy test in an Einstein elevator experiment. The prototype sensor was designed to identify, address, and solve the major issues associated with various aspects of the experiment. This paper illustrates the measurements conducted on this prototype sensor to attain a high quality factor (Q ∼ 10^5) at low frequencies (<20 Hz). Such a value is necessary for reducing the Brownian noise to match the target acceleration noise of 10−14 g/√Hz, hence providing the desired experimental accuracy. © 2014 AIP Publishing LLC

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