STREGA Start up Meeting
IGR - Geppo Cagnoli
EGO – Cascina – 12th May 2004
M1 – Advanced Materials for Mirror Substrates
Sheila Rowan
• The thermal and loss properties of Silica at
low temperature are not very good
• Sapphire is much better but it is dominated by
thermoelastic noise
@100 Hz
• IGR has proposed to use Si for substrates
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M1 – Advanced Materials for Mirror Substrates
IGR ON GOING ACTIVITIES
IGR FUTURE ACTIVITIES
Meas. at room T on Si and CaF2
Meas. at low T on Si and CaF2
Investigation on the doping effect on Si
Investigation on silicate bonding at low T
Optical measurements on Si and CaF2
Prototypes
Writing report
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M1 – Advanced Materials for Mirror Substrates
2 CRYOSTATS
40X30F cm
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M1 – Advanced Materials for Mirror Substrates
IGR collaborates with Stanford on the M1 activities
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M5 – Innovative Materials for Ad. Det. Suspensions
• Extend the experience of GEO600
from silica to silicon
monolithic suspensions
• Silicon ribbons
• Silicon cantilever
blades
• Silicate bonding
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M5 – Innovative Materials for Ad. Det. Suspensions
IGR ON GOING ACTIVITIES
IGR FUTURE ACTIVITIES
IGR POSSIBLE ACTIVITIES
Measurements on Si, YAG, Mo, Ru fibres
Production of monocrystalline fibres
Measurements on monocrystalline fibres
Local cooling of monocrystalline fibres
Prototypes
Writing report
IGR collaborates with Stanford on the M5 activities
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