1. Prospects and plans : LIGO interferometers Michael Landry LIGO Hanford Observatory LSC meeting, MIT Nov 4-5, 2006

2. Talk overview How are we doing in S5 Near-term commissioning efforts
Schedules
Longer term : Enhanced LIGO
Still longer : Advanced LIGO
Landry/LSC Nov 5, 2006

3. LHO
Landry/LSC Nov 5, 2006

4. LLO
Landry/LSC Nov 5, 2006

5. LLO seismic
Landry/LSC Nov 5, 2006

6. Sometimes we are lucky Earth quake stop before after
Near disaster: L1 ITMy got stuck-
Vented and fixed it: Noise got better!!!
Earth quake stop
before
after
Mike Zucker
Aug LSC
Landry/LSC Nov 5, 2006

7. …sometimes we don’t Magnitude 4.5, E of Mt Rainier, WA
Saturday October 7, 2006 at 07:48:26.57 PM (PDT)
Depth : 4km
Both H1 and H2 down ~ 1Mpc after quake
Several days later, H2 drops to a paltry ~ 2Mpc
burped H2 ETMy to a few Torr, plus shake
burped vertices of both H1 and H2
H1 restored (with tweaks) to 15Mpc
H2 continues however to ~ once/week, drop to 1Mpc
Limp like this? Vent?
Landry/LSC Nov 5, 2006

8. Recent BNS range performance
Landry/LSC Nov 5, 2006

9. LLO/LHO coincidence
Landry/LSC Nov 5, 2006

10. Recent LHO/LLO coincident duty cycle
Landry/LSC Nov 5, 2006

11. Near-term commissioning
LHO
H1 dark port table floating
Line mitigation
PEPI – mitigate stack modes at 1.2Hz, 2.2Hz, and possibly 6Hz. May help limit upconversion into the gw band
H1 power up
LLO
Low frequency noise suppression with HEPI tidal?
WFS tuning?
Landry/LSC Nov 5, 2006

12. When will it end
Landry/LSC Nov 5, 2006

13. S5 H1 downtime
Betsy Bland
LHO
Landry/LSC Nov 5, 2006

14. S5 L1 downtime
Dan Hoak
LLO
Landry/LSC Nov 5, 2006

15. Science Education Center
LLO science education center construction completed
Landry/LSC Nov 5, 2006

16. Before Advanced LIGO NOW 4 yrs S5 ~2 years S6
Other interferometers in operation (GEO, Virgo)
4 yrs 4Q
‘05 4Q
‘06 4Q
‘07 4Q
‘08 4Q
‘09 4Q
‘10
Adv
LIGO S5
~2 years S6
Between now and AdvLIGO, there is some time to
improve…
Sensitivity enhancement without drastic hardware changes.
Factor of ~2 in noise, factor of ~10 in event rate.
Maximize likelihood of a detection before Advanced LIGO.
Rana Adhikari
(recent NSF review)
Landry/LSC Nov 5, 2006

17. Advanced LIGO in context Black: Operations (R&RA); Blue Project (MREFC)
Advanced LIGO R&D well advanced, heading toward Final Design phases for each subsystem
Initial LIGO S5 run to reach goal of one year of integrated data in Fall 2007
Advanced LIGO funding at start of FY2008; fabrication, assembly, and stand-alone testing of detector components
Advanced LIGO R&D ramps down end FY2008
Initial LIGO Enhancements to be installed, commissioned progressively at Livingston, Hanford
Science runs with Enhancements starting in early 2009, running to early 2011
Advanced LIGO starts decommissioning initial LIGO instruments in early 2011, installing new detector components from stockpile
First Advanced LIGO interferometer accepted in early 2013, second and third in mid Project completes!
Commissioning of instruments, engineering runs starting in 2014
David Shoemaker
(recent NSF review)
Landry/LSC Nov 5, 2006

18. Summary
1/2 way there!
Landry/LSC Nov 5, 2006