Ligo 5th Science Run ( S-5 ), Gravity Wave Study |
Ligo 5th Science Run ( S-5 ), Gravity Wave Study |
Nov 30 2005, 05:26 AM
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#1
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Member Group: Members Posts: 624 Joined: 10-August 05 Member No.: 460 |
http://www.ligo.caltech.edu/NSF/related/charge.pdf
QUOTE Excellent progress continues in eliminating noise sources and increasing detector stability. With the replacement of a somewhat lossy input test mass on the Hanford 4-km x-arm, all three interferometers should now be capable of achieving design sensitivity (approximately 14 Mpc range for the canonical NS-NS inspiral for the 4-km IFOs, approximately 7 Mpc range for the 2-km IFO). Currently, the 4-km IFOs have demonstrated sensitivities in the 11 MPc range and the 2-km IFO in the 4.5-MPc range. S-5 is expected to start on November 4th, 2005 with all three IFOs operating very close to design sensitivity. Michelson & Morley enter the 21st century... LIGO Home: http://www.ligo.caltech.edu/ |
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Nov 30 2005, 06:09 PM
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#2
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Member Group: Members Posts: 356 Joined: 12-March 05 Member No.: 190 |
caption from image at ligo site "A portion of a mirror face. The copper coil is part of the control system. The screw has a viton earthquake stop at its tip to protect the mirror against extreme motions (more than about 0.5 micron)"
!!!! haha! I don't know why but that just strikes me as hilarious today. |
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Dec 1 2005, 07:37 AM
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#3
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
It's REALLY good news that LIGO is up to about it's orignially promised performance.
The bad news is that unless we're quite lucky, there won't be a strong enough signal to be detected till the second generation upgrades. We COULD be lucky... cross fingers... and there COULD be surprise sources that aren't on the "expected population of signals list".... But we can't count on that. But getting to first generation successfully is mandatory to go on from there. |
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Dec 5 2005, 08:14 PM
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#4
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Member Group: Members Posts: 624 Joined: 10-August 05 Member No.: 460 |
QUOTE (edstrick @ Dec 1 2005, 12:37 AM) It's REALLY good news that LIGO is up to about it's orignially promised performance. The bad news is that unless we're quite lucky, there won't be a strong enough signal to be detected till the second generation upgrades. We COULD be lucky... cross fingers... and there COULD be surprise sources that aren't on the "expected population of signals list".... But we can't count on that. But getting to first generation successfully is mandatory to go on from there. There are reasons to be slightly more optomistic - There are, if memory serves me, at least 4 known binary pulsars that are nearing final collapse. This implies that there are may similar pairs in our own galaxy that could 'bite the big one" at any moment. These should be within LIGOs range at the current sensitivity. Regardless of any success or failure (which, if the sensitivity is great enough, should also provide a successful null hypothesis) - The sensor technology developed for the LIGO program is a sterling technological achievement. I didn't think that even the current level of sensitivity could ever be achieved. |
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Jul 31 2006, 02:59 PM
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#5
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Member Group: Members Posts: 624 Joined: 10-August 05 Member No.: 460 |
Summer 2006
LIGO Scientific Collaboration Meeting Mon 14 Aug: All day: Data analysis plenary talks: Upcoming publications and talks, S5 results Tues 15 Aug: Morning: Official Opening, general plenary talks Afternoon: Data analysis plenary talks: Summaries and future plans Wed 16 Aug: All day: Instrument Science talks, in parallel with Detector Characterization |
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