PhD Defenses


Mon May 23rd 2022, 12:00 - 1:00pm
PAB 102/103
Stanford overview

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Ph.D. Candidate:  Edgard Bonilla

Research Advisor:  Robert Byer

Date: May 23rd, 2022

Time: 12:00 pm

Location: PAB 102/103

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Title: "Progress on the practical integration of cryogenics to gravitational-wave detectors"

Abstract: The success of the LIGO and Virgo interferometers in detecting gravitational waves has launched a new era of gravitational-wave astronomy. Despite their achievements, there is still plenty of room for improving the technologies that have made gravitational-wave detection possible. One avenue for improvement comes in the form of using 124-kilogram silicon masses to reduce the thermally driven noise in the midband of the observatories. This idea, while promising, carries a lot of technical challenges that must be overcome before it can be put to practice. This work covers ainvestigations on a few of the practical aspects of integrating cryogenics to gravitational-wave interferometers, including estimation of technical noises introduced by cryogenic equipment, selection of a proper cryogen and adequate procedure for faster cooldown and iteration times for research and development of the cryocooled interferometer technology.