1 / 28

ET- Einstein Telescope Technology for the third generation

EU contract #211743. Harald Lück , AEI Hannover. ET- Einstein Telescope Technology for the third generation. You are here. GW Timelines. Virgo+. Advanced Virgo. GEO HF. Hanford. Advanced LIGO. E-LIGO. Livingston. Launch Transfer data. data. Site Prep . DS. PCP.

hinda
Télécharger la présentation

ET- Einstein Telescope Technology for the third generation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EU contract #211743 HaraldLück, AEI Hannover ET- Einstein TelescopeTechnology for the third generation GWADW- May, 10-15, 2009

  2. You are here GW Timelines Virgo+ Advanced Virgo GEO HF Hanford Advanced LIGO E-LIGO Livingston Launch Transfer data data Site Prep. DS PCP Construction Comm. 3rd Gen. 1st Generation 2nd Generation

  3. In this talk nodiscussionof • Interferometer size • As big a financesallow? Howbigisthat? • Over-groundvsunder-ground(J. Harms, Jo Van der Brand, D. Rabeling) • Will lowfrequencyperformancegoalsreallyrequireundergroundoperation ? • Low frequencysuspensions(R. Nawrodt) • Newtonian Noise • Cryogenicoperation(W. Johnson, K. Kuroda) • Is cryogenicsreallyneededtoachievethegoalsorisroomtemperaturesufficient (at least forhighfrequencies) ? • Non gaussianbeams(A. Freise) • QND tricks(H. Müller-Ebhardt) • Xylophone: collocated multi-narrowbandvssingle-broadbanddetector(S. Hild, R. DeSalvo) GWADW - May, 10-15, 2009

  4. TechnologiesSome (good?) candidatesforthethirdgeneration • Substrate material: Silicon • Gratings & wave-guidecoatings(H. Lück) • Quantum noise: • Squeezing(A. Khalaidovski) • Laser (N. Man) GWADW - May, 10-15, 2009

  5. Mechanical Q ofsubstratematerials Nawrodt et al. GWADW - May, 10-15, 2009

  6. SILICON (Properties) Low thermal lensing @ lowtemp. Fusedsilica 2E-5 / K @ 300 K Nothermoelasticnoise Vanishing CTE@ 20k & 125K Dn/dT Temperature [K] GWADW - May, 10-15, 2009

  7. Physicalpropertiesofsilicon Thermal conductivity Silicon Specificheat Silicon GWADW- May, 10-15, 2009

  8. Properties ofsilicon / silica Thermal conductivityfusedSilica Specificheat Silicon / fusedsilica 1E4 1/10 GWADW- May, 10-15, 2009

  9. Siliconlowabsorption @ 1550nm expected from M. Green and M. Keevers, Optical propertiesofintrinsic Silicon @ 300K, Progress in PhotovoltaicresearchandApplications, Vol. 3, 189-192 (1995) Max. Diameter currently 450mm Wikipedia.com GWADW - May, 10-15, 2009

  10. Mechanicallossesofthecoatings GWADW - May, 10-15, 2009

  11. Coatings on Silicon • Refractiveindexof Silicon @ 1550nm ~ 3.48 @ 300K • Refractive Index of SiO2 ~ 1.44 • fewerlayersneeded due todifference in refractiveindeces Si SiO2 Si SiO2 Si Coating Substrate GWADW - May, 10-15, 2009

  12. Diffusion of Oxygen High absorptionofSiOmightbe a problemfor SiO2 coatings on Silicon substrates Si SiO2 Si SiO2 Si SiO SiO SiO SiO Coating Substrate GWADW - May, 10-15, 2009

  13. NanostructuredSurfaceswaveguide coatings substrate substrate Monolithic 100% reflection “coating” [Brückner et al., Opt. Lett., 33, 264 (2008)]

  14. Promising newresults R > 99.8%, private communication, IAP Jena, R. Schnabel

  15. Mechanical losses of gratings Nawrodt et al., New Journal of Physics 9 (2007) 225 cryst. quartz,  3“  12 mm, 11670 Hz

  16. Extracted coating/grating losses Nawrodt et al., New Journal of Physics 9 (2007) 225

  17. Squeezing GWADW - May, 10-15, 2009

  18. 11.5dB @ 5MHz 1064 nm Vahlbruch et al. PRL 100, 033602 (2008) GWADW - May, 10-15, 2009

  19. Low frequencysqueezing Shotnoise 1064 nm Squeezednoise electronic darknoise Chelkowskiet al., PRA 75, 043814 (2007) GWADW - May, 10-15, 2009

  20. Squeezing @ 1550 nm 1550 nm Mehmet et. al.: arXiv:0902.0670v1 [quant-ph] GWADW - May, 10-15, 2009

  21. Fragile Squeezed StatesInfluenceoflosses GWADW - May, 10-15, 2009

  22. Laser availabletoday, 1064 nm • Solid statelaser: • laserdiodepumped solid statelaser (AdvLIGO): • 210WNd:YAG, lessthan 12% in higher order modes, almostfinished design forreliablelong-termoperation • 3 E-9 /sqrt(Hz) power stability @ 10Hz, rfnoise: 1dB above SN of 100mA @ 9 MHz • fibrelaser: • ytterbiumdopedphotoniccrystalfiberamplifierusing a single-frequencyNd:YAG non-planar ring oscillatorseedsource • 148W, lessthan 8% in higher order modes • 13 November 2006 / Vol. 14, No. 23 / OPTICS EXPRESS 11071 GWADW - May, 10-15, 2009

  23. Laser availabletoday, 1550 nm • Solid statelaser: • - • fibrelaser: • Erbium fibrelaser, ~2 W, poorreliability GWADW - May, 10-15, 2009

  24. Laserplans • 1064 nm: • Reach 1kW withinnext 5 years • RIN < 1 E-9 /√Hz • 1550 nm: • 150 W withinnextfewyears GWADW - May, 10-15, 2009

  25. 2022

  26. Refractiveindexofsilicon GWADW- May, 10-15, 2009

  27. http://www.sciner.com/Opticsland/FS.htm Refractive Index fusedsilica GWADW- May, 10-15, 2009

  28. The bruteforceapproachStefan Hild S. Hild et al, http://arxiv.org/abs/0810.0604 GWADW- May, 10-15, 2009

More Related