MG15 - Talk detail |
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Participant |
Kang, Gungwon | |||||||
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Institution |
KISTI - 245 Daehak-ro, Yuseong-gu - Daejeon - Daejeon - South Korea | |||||||
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Session |
GW4 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
SOGRO: Superconducting Tensor Gravitational Wave Detector for Mid-Frequencies | |||||
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Abstract |
In this talk, basic principles and design concept of SOGRO (Superconducting Omni-directional Gravitational Radiation Observatory) will be introduced briefly. This new gravitational wave detector is ground-based and covers sub-Hz frequencies, e.g., 0.1~10 Hz, which could be emitted from coalescences of intermediate-mass black hole binaries and white dwarf binaries as well as inspiral phases of stellar-mass black hole binary mergers. Multiple SOGROs could also be used to measure stochastic gravitational wave backgrounds. Six superconducting test masses are magnetically levitated on each six orthogonal rigid platform axis for free motion, and series of SQUID sensors are mounted on the platform in such a way that only differential motions of test mass pairs can be measured, rejecting their common-mode motions with extremely high accuracy, for instance, one part in 10^9 in the case of seismic noise. Newtonian gravity noise can also be rejected to a suitable degree by using its full tensor nature. Various design parameters, characteristics of platform thermal noises for several designs and cooling methods will be discussed as well. The strain sensitivity we propose is 10^(-19)~10^(-21) Hz^(-1/2) at 0.1~10 Hz. |
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