Experimental Limits on Gravitational Waves in the MHz frequency Range
Abstract
This thesis presents the results of a search for gravitational waves in the 111MHz frequency range using dual powerrecycled Michelson laser interferometers at Fermi National Accelerator Laboratory. An unprecedented level of sensitivity to gravitational waves in this frequency range has been achieved by crosscorrelating the output fluctuations of two identical and colocated 40m long interferometers. This technique produces sensitivities better than two orders of magnitude below the quantum shotnoise limit, within integration times of less than 1 hour. 95% confidence level upper limits are placed on the strain amplitude of MHz frequency gravitational waves at the 10 ^{21} Hz ^{1/2} level, constituting the best direct limits to date at these frequencies. For gravitational wave power distributed over this frequency range, a broadband upper limit of 2.4 x 10 ^{21}Hz ^{1/2} at 95% confidence level is also obtained. This thesis covers the detector technology, the commissioning and calibration of the instrument, the statistical data analysis, and the gravitational wave limit results. Particular attention is paid to the endtoend calibration of the instrument’s sensitivity to differential arm length motion, and so to gravitational wave strain. A detailed statistical analysis of the data is presented as well.
 Authors:
 Univ. of Chicago, IL (United States)
 Publication Date:
 Research Org.:
 Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), High Energy Physics (HEP) (SC25)
 OSTI Identifier:
 1329051
 Report Number(s):
 FERMILABTHESIS201618
1491549
 DOE Contract Number:
 AC0207CH11359
 Resource Type:
 Thesis/Dissertation
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Lanza, Robert Jr. Experimental Limits on Gravitational Waves in the MHz frequency Range. United States: N. p., 2015.
Web. doi:10.2172/1329051.
Lanza, Robert Jr. Experimental Limits on Gravitational Waves in the MHz frequency Range. United States. doi:10.2172/1329051.
Lanza, Robert Jr. 2015.
"Experimental Limits on Gravitational Waves in the MHz frequency Range". United States.
doi:10.2172/1329051. https://www.osti.gov/servlets/purl/1329051.
@article{osti_1329051,
title = {Experimental Limits on Gravitational Waves in the MHz frequency Range},
author = {Lanza, Robert Jr.},
abstractNote = {This thesis presents the results of a search for gravitational waves in the 111MHz frequency range using dual powerrecycled Michelson laser interferometers at Fermi National Accelerator Laboratory. An unprecedented level of sensitivity to gravitational waves in this frequency range has been achieved by crosscorrelating the output fluctuations of two identical and colocated 40m long interferometers. This technique produces sensitivities better than two orders of magnitude below the quantum shotnoise limit, within integration times of less than 1 hour. 95% confidence level upper limits are placed on the strain amplitude of MHz frequency gravitational waves at the 1021 Hz1/2 level, constituting the best direct limits to date at these frequencies. For gravitational wave power distributed over this frequency range, a broadband upper limit of 2.4 x 1021Hz1/2 at 95% confidence level is also obtained. This thesis covers the detector technology, the commissioning and calibration of the instrument, the statistical data analysis, and the gravitational wave limit results. Particular attention is paid to the endtoend calibration of the instrument’s sensitivity to differential arm length motion, and so to gravitational wave strain. A detailed statistical analysis of the data is presented as well.},
doi = {10.2172/1329051},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 3
}

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