Commissioning of the tuned DC readout at GEO 600

J. Degallaix; H. Grote; M. Prijatelj; M. Hewitson; S. Hild; C. Affeldt; A. Freise; J. Leong; H. Luck; K.A. Strain; H. Wittel; B. Willke; K. Danzmann

doi:10.1088/1742-6596/228/1/012013

Commissioning of the tuned DC readout at GEO 600

J. Degallaix^*
, H. Grote
, M. Prijatelj
, M. Hewitson
, S. Hild
, C. Affeldt
, A. Freise
, J. Leong
, H. Luck
, K.A. Strain
, H. Wittel
, B. Willke
, K. Danzmann

^*Corresponding author for this work

Research output: Contribution to journal › Conference article in journal › Academic › peer-review

Abstract

Recent experimental results from GEO 600 operating with a DC readout and a tuned signal recycling cavity are reported. Compared to the S5/Astrowatch setup, two major changes in the configuration have been implemented: the control readout to keep the interferometer on the dark fringe is changed from heterodyne to homodyne readout and the signal recycling cavity is shifted from a 550Hz detuning to a 0 Hz detuning (also called tuned). As preliminary experiments showed,the tuned DC readout sensitivity is similar to the heterodyneone. To take advantage of the new DC readout detection scheme, an Output Mode Cleaner (OMC) has to be installed. The design, building and testing of the GEO OMC, which consists of a 4 mirrors monolithic ring cavity, will also be presented in this article.

Original language	English
Article number	012013
Pages (from-to)	1-8
Number of pages	8
Journal	Journal of Physics: Conference Series
Volume	228
DOIs	https://doi.org/10.1088/1742-6596/228/1/012013
Publication status	Published - 1 Jan 2010
Externally published	Yes

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Cite this

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title = "Commissioning of the tuned DC readout at GEO 600",

abstract = "Recent experimental results from GEO 600 operating with a DC readout and a tuned signal recycling cavity are reported. Compared to the S5/Astrowatch setup, two major changes in the configuration have been implemented: the control readout to keep the interferometer on the dark fringe is changed from heterodyne to homodyne readout and the signal recycling cavity is shifted from a 550Hz detuning to a 0 Hz detuning (also called tuned). As preliminary experiments showed,the tuned DC readout sensitivity is similar to the heterodyneone. To take advantage of the new DC readout detection scheme, an Output Mode Cleaner (OMC) has to be installed. The design, building and testing of the GEO OMC, which consists of a 4 mirrors monolithic ring cavity, will also be presented in this article.",

author = "J. Degallaix and H. Grote and M. Prijatelj and M. Hewitson and S. Hild and C. Affeldt and A. Freise and J. Leong and H. Luck and K.A. Strain and H. Wittel and B. Willke and K. Danzmann",

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doi = "10.1088/1742-6596/228/1/012013",

language = "English",

volume = "228",

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T1 - Commissioning of the tuned DC readout at GEO 600

AU - Degallaix, J.

AU - Grote, H.

AU - Prijatelj, M.

AU - Hewitson, M.

AU - Hild, S.

AU - Affeldt, C.

AU - Freise, A.

AU - Leong, J.

AU - Luck, H.

AU - Strain, K.A.

AU - Wittel, H.

AU - Willke, B.

AU - Danzmann, K.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Recent experimental results from GEO 600 operating with a DC readout and a tuned signal recycling cavity are reported. Compared to the S5/Astrowatch setup, two major changes in the configuration have been implemented: the control readout to keep the interferometer on the dark fringe is changed from heterodyne to homodyne readout and the signal recycling cavity is shifted from a 550Hz detuning to a 0 Hz detuning (also called tuned). As preliminary experiments showed,the tuned DC readout sensitivity is similar to the heterodyneone. To take advantage of the new DC readout detection scheme, an Output Mode Cleaner (OMC) has to be installed. The design, building and testing of the GEO OMC, which consists of a 4 mirrors monolithic ring cavity, will also be presented in this article.

AB - Recent experimental results from GEO 600 operating with a DC readout and a tuned signal recycling cavity are reported. Compared to the S5/Astrowatch setup, two major changes in the configuration have been implemented: the control readout to keep the interferometer on the dark fringe is changed from heterodyne to homodyne readout and the signal recycling cavity is shifted from a 550Hz detuning to a 0 Hz detuning (also called tuned). As preliminary experiments showed,the tuned DC readout sensitivity is similar to the heterodyneone. To take advantage of the new DC readout detection scheme, an Output Mode Cleaner (OMC) has to be installed. The design, building and testing of the GEO OMC, which consists of a 4 mirrors monolithic ring cavity, will also be presented in this article.

U2 - 10.1088/1742-6596/228/1/012013

DO - 10.1088/1742-6596/228/1/012013

M3 - Conference article in journal

SN - 1742-6588

VL - 228

SP - 1

EP - 8

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

M1 - 012013

ER -

Commissioning of the tuned DC readout at GEO 600

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