Description
MAD: Suspensions
Monocrystalline silicon fibers are a promising candidate for suspending silicon test masses in gravitational-wave detectors. The excellent thermal and mechanical properties of crystalline silicon enable stable support of heavy mirrors and efficient extraction of laser-induced heat. Moreover, silicon's exceptional material behavior at cryogenic temperatures aligns well with the operational...
The ET-FIBER project is a collaborative R&D initiative, focused on developing monocrystalline silicon fibres for suspending a 100 kg test mass in the E-TEST prototype. E-TEST serves as a critical cryogenic prototype for the Einstein Telescope , operates a large monocrystalline silicon mirror cooled radiatively to 20–25 K, while achieving low seismic noise below 10 Hz through advanced vibration...
In the last few months, tests have been carried out between Perugia/Camerino and Glasgow to evaluate how much a correct assembly technique and a specifically sized set-up affected the evaluation of the breaking load and the loss angle measurements.
Seismic attenuation in gravitational wave detectors relies on materials that show very small creep. Maraging steel has now been used since almost thirty years but systematic data about dissipation at low frequency haven’t been collected yet. We present measurements at room temperature of mechanical oscillation damping in a purpose-built maraging steel cantilever spring at low frequency under...
At the ARC-ETCRYO laboratory in Rome, a full-scale (1:1) cryogenic payload is being developed to investigate conductive cooling techniques for the Einstein Telescope. Materials with outstanding mechanical and thermal specifications are required to meet both suspension and test mass substrate requirements.
Sapphire is a very promising optimal candidate at least for the suspension elements,...
