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Concept Study of a Storage Ring-based Gravitational Wave Observatory: Gravitational Wave Strain and Synchrotron Radiation Noise by Schmirander, Thorben; Miltchev, Velizar; Rao, Suvrat; Brüggen, Marcus; Grüner, Florian; Hillert, Wolfgang; Liske, Jochen is a scholarly article available to read on EtoBox.

What is Concept Study of a Storage Ring-based Gravitational Wave Observatory: Gravitational Wave Strain and Synchrotron Radiation Noise about?

This work for the first time addresses the feasibility of measuring millihertz gravitational waves (mHz GWs) with a storage ring-based detector. While this overall challenge consists of several partial problems, here we focus solely on quantifying design limitations imposed by the kinetic energy and radiated power of circulating ions at relativistic velocities. We propose an experiment based on the measurement of the time-of-flight signal of an ion chain. One of the dominant noise sources inherent to the measurement principle for such a GW detector is the shot noise of the emitted synchrotron radiation. We compute the noise amplitude of arrival time signals obtained by analytical estimates and simulations of ions with different masses and velocities circulating in a storage ring with the circumference of the Large Hadron Collider (LHC). Thereby, we show that our experiment design could reduce the noise amplitude due to the synchrotron radiation in the frequency range $10^{-4} - 10^{-2}$ Hz to one or two orders of magnitude below the expected GW signals from of astrophysical sources, such as super-massive binary black holes or extreme mass-ratio inspirals. Other key requirements for

Author

Schmirander, Thorben; Miltchev, Velizar; Rao, Suvrat; Brüggen, Marcus; Grüner, Florian; Hillert, Wolfgang; Liske, Jochen

Published

2024

Language

EN