Baffle material characterization for Advanced LIGO
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2009
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| Online Access: | http://hdl.handle.net/1721.1/44820 |
| _version_ | 1826201149742514176 |
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| author | Hunt, Cassandra R |
| author2 | Nergis Mavalvala. |
| author_facet | Nergis Mavalvala. Hunt, Cassandra R |
| author_sort | Hunt, Cassandra R |
| collection | MIT |
| description | Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008. |
| first_indexed | 2024-09-23T11:47:18Z |
| format | Thesis |
| id | mit-1721.1/44820 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T11:47:18Z |
| publishDate | 2009 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/448202019-04-12T09:18:00Z Baffle material characterization for Advanced LIGO Baffle material characterization for Advanced Laser Interferometer Gravitational-Wave Observatory Hunt, Cassandra R Nergis Mavalvala. Massachusetts Institute of Technology. Dept. of Physics. Massachusetts Institute of Technology. Dept. of Physics. Physics. Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008. Includes bibliographical references (p. 43-45). The transition to Advanced LIGO introduces new sensitivity requirements for the LIGO interferometers. When light scatters away from the main laser beam, then scatters off the beam tube and returns to the main beam, noise is introduced into the phase of the laser. The Auxiliary Optics Support subsystem uses baffles and beam dumps to control this scatter, but the baffle material and shape contribute some scatter as well. Careful selection of baffle material for Advanced LIGO is necessary in order to minimize baffle backscatter. Characterization of potential materials will also inform the geometry and placement of baffles. To this end, I developed a scatterometer experiment designed to measure the Bidirectional Reflectance Distribution Function (BRDF) of a material. The arrangement was used to measure the BRDF for black welder's glass, the prime candidate material for baffles in Advanced LIGO. I found that black glass has a BRDF on the order of 10-, putting it within sensitivity requirements. by Cassandra R. Hunt. S.B. 2009-03-16T19:47:34Z 2009-03-16T19:47:34Z 2008 2008 Thesis http://hdl.handle.net/1721.1/44820 301560616 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 45 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. Hunt, Cassandra R Baffle material characterization for Advanced LIGO |
| title | Baffle material characterization for Advanced LIGO |
| title_full | Baffle material characterization for Advanced LIGO |
| title_fullStr | Baffle material characterization for Advanced LIGO |
| title_full_unstemmed | Baffle material characterization for Advanced LIGO |
| title_short | Baffle material characterization for Advanced LIGO |
| title_sort | baffle material characterization for advanced ligo |
| topic | Physics. |
| url | http://hdl.handle.net/1721.1/44820 |
| work_keys_str_mv | AT huntcassandrar bafflematerialcharacterizationforadvancedligo AT huntcassandrar bafflematerialcharacterizationforadvancedlaserinterferometergravitationalwaveobservatory |