status of geo600 benno willke for the geo600 team aspen meeting aspen co, january 2005...

Status of GEO600

Benno Willke

for the GEO600 team

Aspen Meeting

Aspen CO, January 2005

LIGO-G050030-00-Z

Aspen05, B. Willke

Sensitivity Improvements

102

103

10-21

10-20

10-19

10-18

10-17

Str

ain

AS

D [

Hz-1

/2]

Frequency [Hz]

31 Dec '03 (S3 II)

Aug '02 (S1)

Jan '02 (E7)

5 nov '03 (S3 I)

5 Jan '04 (combined)

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Transition Commissioning - Observing

overnight runs Aug04 – Jan05: 1405h (duty cycle: 93.7%)

0 10 20 30 40 50 60 70 80 900

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5 time origin 2004-10-20 16:00:27 (782323240)

Time (Days)

Ins

pir

al R

an

ge

(M

Pc

)

NS-NSBH-NSBH-BH

Aspen05, B. Willke

Aspen05, B. Willke

Central Building

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Tube / Trench

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Clean Room / Control Room

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Reaction Pendulum

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GEO600 optical layout

12W lasermode cleaner

interferometer with dual recycling

detector

Attenuated to 6WAttenuated to 6W

1% Transmission1% Transmission

600m

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Sensitivity progress (highlights)

Typical S3

HPD lock +

New MI+SR servo

SR bench scattering

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Sensitivity – Jan 2005

100 100050 6000

10-21

10-20

10-19

10-18

h(f

)

[1/

sqrt

(Hz)

]

Frequency [Hz]

Aspen05, B. Willke

Aspen05, B. Willke

Sensitivity Change with Heater Power

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Amplitude Noise Coupling

101

102

103

10-2

100

Mag

nitu

de (

V/V

)

Frequency (Hz)

101

102

103

-200

-100

0

100

200

Pha

se (

deg)

Frequency (Hz)

TF: MICVIS > P

TF: MICVIS > Q

Aspen05, B. Willke

Unbalanced Sidebands

PRC

SRCbroad-band

SRCdetuned to1.1 kHz

MI-sidebandsSR-sidebands broadband

SR-sidebands1.1kHz detunedcarrier

-119 * fPRC

-72 * fPRC

72 * fPRC

119 * fPRC

0

72 D (765Hz) D (1.26kHz) D (1.26kHz) 72 D (765Hz)

2.2kHz 1.1kHz1.86kHz 2.3kHz

SR-sidebands2kHz detuned

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Optical Gain

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Calibration

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On-line optical TF measurements

actuator optical

CAL P and Q

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Calibration progress

• On-line calibration of both output quadraturesHP and HQ

• Work on optimal combination is underway

• Estimation of optical parameters in real-time in control room

• On-line calibration leads to overnight runs

Aspen05, B. Willke

Combining HP and HQ - result

• HQ’ contains almost no signal compared to HP’

• Where noise behaves like cal lines, we have apparent displacement

• Useful diagnostic for noise hunting (?)

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Overnight Runs – Jan 14th

0 1 2 3 4 5 6 7

10-20

10-19

RM

S S

tra

in

Time from 789686520 (2005-01-13 21:21:47) to 789715310 (2005-01-14 05:21:37)Step size of 10 secs

0 1 2 3 4 5 6 7

10-21

Time (H)

RM

S S

tra

in

HP: 220.0-230.0 Hz

HQ: 220.0-230.0 Hz

HP: 989.0-999.0 Hz

HQ: 989.0-999.0 Hz

1 2 3 4 5 6 70

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

Hours starting from UTC 2005-01-13 21:21:51

Eff

ec

tiv

e D

ista

nc

e (

MP

c)

InspiralSenseMon for HP

BH-BHBH-NS

NS-NS

0 1 2 3 4 5 6 72.5

3x 10

5

Gp

P params: 28800 secs from 2005-01-13 21:21:47 (789686520) every 10 secs

0 1 2 3 4 5 6 7950

100010501100

P P

ole

f

0 1 2 3 4 5 6 7

2.4

2.6

2.8

P P

ole

Q

0 1 2 3 4 5 6 7

1500

1600

1700

P Z

ero

f

Time (hours)

Aspen05, B. Willke

Noise Projections

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Summary & Outlock

• GEO600 runs with dual-recycling on large baseline detector including calibration

• sensitivity improved by two orders of magnitude since S3-I

• data taking over night and on weekends with high duty cycle

• next steps:– LSC–S4 science run – increase injected power – increase power recycling gain– improve noise models and increase sensitivity– convert GEO into observatory

• GEO-HF

Aspen05, B. Willke