Pcal actuation of the TST stage of the DARM servo loop

Slides:



Advertisements
Similar presentations
Hierarchical Control Notes – Blending Style Follows quad example Note: coil drivers and ESD are LASTI style; seismic noise is outdated 1G v3.
Advertisements

Cascina, January 25th, Coupling of the IMC length noise into the recombined ITF output Raffaele Flaminio EGO and CNRS/IN2P3 Summary - Recombined.
Cascina, January 24, 2005 Status of GEO600 Joshua Smith for the GEO600 team.
LIGO-G M Photon Calibrator DRR & CDR: Response to Reviewers’ Report Phil Willems, Mike Smith.
G D 1 LIGO-????????? Photon Calibration System (PhotonCal)
LIGO-G W Proposed LHO Commissioning Activities in May 02 Fred Raab 29 Apr 02.
Investigation of Variations in the Absolute Calibration of the Laser Power Sensors for the LIGO Photon Calibrators Stephanie Erickson (Smith College) Mentor:
LIGO- G060XXX-00-R E2E meeting, September How to design feedback filters? E2E meeting September 27, 2006 Osamu Miyakawa, Caltech.
Towards dual recycling with the aid of time and frequency domain simulations M. Malec for the GEO 600 team Max-Planck-Institut für Gravitationsphysik Albert-Einstein-Institut.
G D Tasks After S3 Commissioning Meeting, Oct 6., 2003 Peter Fritschel, Daniel Sigg.
Servos Servos are everywhere. Elements of servo System -- to be controlled Sensor or detector -- measure quantity to be controlled Reference -- desired.
Virgo Control Noise Reduction
GWADW, May 2012, Hawaii D. Friedrich ICRR, The University of Tokyo K. Agatsuma, S. Sakata, T. Mori, S. Kawamura QRPN Experiment with Suspended 20mg Mirrors.
GWADW 2010 in Kyoto, May 19, Development for Observation and Reduction of Radiation Pressure Noise T. Mori, S. Ballmer, K. Agatsuma, S. Sakata,
Stefan Hild 1Ilias WG1 meeting, Sep 2005, Perugia Title GEO 600 Commissioning progress Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
Joshua Smith December 2003 Detector Characterization of Dual-Recycled GEO600 Joshua Smith for the GEO600 team.
GEO‘s experience with Signal Recycling Harald Lück Perugia,
Takanori Sekiguchi External Review Alignment control servo for type-B/type-Bp (OpLev/WFS) 1 T. Sekiguchi.
Optical Gyroscopes for Ground Tilt Sensing in Advanced LIGO The need for low frequency tilt sensing The optics in Advanced LIGO’s suspensions must be very.
GEO600 Detector Status Harald Lück Max-Planck Institut für Gravitationsphysik Institut für Atom- und Molekülphysik, Uni Hannover.
Displacement calibration techniques for the LIGO detectors Evan Goetz (University of Michigan)‏ for the LIGO Scientific Collaboration April 2008 APS meeting.
LIGO-G D The LIGO-I Gravitational-wave Detectors Stan Whitcomb CaJAGWR Seminar February 16, 2001.
Squeezed light and GEO600 Simon Chelkowski LSC Meeting, Hannover.
Investigation of discrepancies between Photon calibrator, VCO and Official (coil) calibration techniques Evan Goetz, Rick Savage with Justin Garofoli,
LIGO Laboratory1 Enhanced and Advanced LIGO TCS Aidan Brooks - Caltech Hannover LSC-VIRGO Meeting, October 2007 LIGO-G Z.
Stefan Hild 1GWDAW 10, Brownsville, December 2005 Status of GEO 600 Stefan Hild, AEI Hannover for the GEO-team.
Harald Lückfor the GEO600 Comissioning team 1ILIAS Meeting, Palma, Oct Title GEO 600 Commissioning Status Based on a talk of Stefan Hild for the.
Pre-stabilized laser (PSL) for AdV Scope of the system Main tasks Requirements Reference solution and status of the design Plans towards completion Technical.
Detector calibration R&D - 1 Elastic deformation of test masses »R. Savage with Pablo Daveloza (LIGO fellowship) and Mario Diaz – UTB and Mahmuda Afrin.
Calibration in the Front End Controls Craig Cahillane LIGO Caltech SURF 2013 Mentors: Alan Weinstein, Jamie Rollins Presentation to Calibration Group 8/21/2013.
AOS: Photon Calibrator Technical Status
TCS and IFO Properties Dave Ottaway For a lot of people !!!!!! LIGO Lab Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of.
G D LIGO Commissioning Update LSC Meeting, Nov. 11, 2003 Daniel Sigg.
Charts for TPF-C workshop SNR for Nulling Coronagraph and Post Coron WFS M. Shao 9/28/06.
LIGO-G Z March 2007, LSC meeting, Osamu Miyakawa 1 Osamu Miyakawa Hiroaki Yamamoto March 21, 2006 LSC meeting Modeling of AdLIGO arm lock acquisition.
Ultra-stable, high-power laser systems Patrick Kwee on behalf of AEI Hannover and LZH Advanced detectors session, 26. March 2011 Albert-Einstein-Institut.
Advanced LIGO UK 1 LIGO-G K OSEM Development UK Advanced LIGO project Stuart Aston University of Birmingham for the UK Advanced LIGO Team LSC.
Active Vibration Isolation using a Suspension Point Interferometer Youichi Aso Dept. Physics, University of Tokyo ASPEN Winter Conference on Gravitational.
The Proposed Holographic Noise Experiment Rainer Weiss, MIT On behalf of the proposing group Fermi Lab Proposal Review November 3, 2009.
Thermal compensation issues: sensing and actuation V. Fafone University of Rome Tor Vergata and INFN ASPERA Technological Forum – EGO October, 2011.
Main Interferometer Subsystem
Calibration and the status of the photon calibrators Evan Goetz University of Michigan with Peter Kalmus (Columbia U.) & Rick Savage (LHO) 17 October 2006.
bKAGRA PSL Design Study
LIGO Commissioning June 10, 2002
H1 Squeezing Experiment: the path to an Advanced Squeezer
Interferometer configurations for Gravitational Wave Detectors
Daniel Sigg, Commissioning Meeting, 11/11/16
Quantum noise reduction using squeezed states in LIGO
The Proposed Holographic Noise Experiment
O2 DARM Loop Design Comparisons and Critiques
First Lessons from the Advanced LIGO Integration Testing
ALS Noise Budget and Model Status Report
ALS HIFO-X Noise Budget and Model Status Report
Progress toward squeeze injection in Enhanced LIGO
A study of Arm Length Stabilization in KAGRA
Photon Calibrator Investigations During S6
Commissioning Update PAC 15, Dec. 11, 2003 Daniel Sigg.
Yoichi Aso on behalf of the LCGT ISC Group
O1 DARM Loop Design Comparisons and Critiques
Commissioning the LIGO detectors
Commissioning progress Stefan Hild Ilias WG1 meeting, Sep 2005
Summary of the iKAGRA Run
Workshop on Gravitational Wave Detectors, IEEE, Rome, October 21, 2004
Summary of iKAGRA Test Run Mar 25-31, 2016
Summary of the iKAGRA Run
Squeezed Light Techniques for Gravitational Wave Detection
LIGO Photon Calibrators
Talk prepared by Stefan Hild AEI Hannover for the GEO-team
Radiation pressure induced dynamics in a suspended Fabry-Perot cavity
Measurement of radiation pressure induced dynamics
Presentation transcript:

Pcal actuation of the TST stage of the DARM servo loop Rick Savage, Darkhan Tuyenbayev

Overview Planning to test full or partial actuation of DARM loop using Photon Calibrator (part of Darkhan’s UTRGV Ph.D. thesis work). Potential actuator for future GW detectors May have advantages such as Simplicity - no reaction mass required, no ESD bias drift, etc. Lower noise (or not)

Current use of Pcals in aLIGO Pcals currently used for Ifo. calibration Yend, lines at 36.7 (34.7) Hz and 331.9 (331.3) Hz Calibration monitor Yend, line at 1083.7 (1083.1) Hz Xend, line at 3001.3 (3001.1) Hz Hardware signal injections (in testing) Xend Pcals (requires giving up 3 kHz line)

Pcal optical path Beams enter vacuum horizontally displaced Pcal periscope directs beams toward BT axis to avoid occlusion by ACB Beams propagate in horizontal planes and impinge on ETM vertically displaced at drumhead mode nodal circle Pcal periscopes relay ETM camera views too Pcal beam spots

Pcal transmitter module layout 2-W YLF laser 1047 nm Isomet AOM Use the diffracted beam New LIGO PDs OFS, Tx, Rx Integrating spheres for Tx PD and Rx PD Two output beams Power balanced to 1% Could add a second AOM, and maybe a second laser, for independent control of two beams (and twice the laser power)

Pcal receiver module 4” integrating sphere with LIGO InGaAs PD Relay mirrors direct both beams into one sphere Optical efficiency from Tx to Rx: 98 – 99 % Two AR-coated windows 4 or 5 relay mirrors Reflection from ETM

Optical Follower servo 100 kHz, UGF 58 deg. phase margin 50 dB gain at low freq. 95% modulation depth Reference waveform (in yellow), behind output waveform (in green) Blue trace is AOM drive signal

Pcal-induced displacement noise

Max Pcal range at a given freq.

DARM loop simplified schematic

DARM OLTF UGF = 40-60 Hz

DeltaL external

DeltaL control (all SUS stages)

DeltaL control from PUM and TST 15-30 Hz PUM/TST crossover

DeltaL control from TST stage

Pcal power required for TST drive

Total rms Pcal power (sum upward) 10 mWrms total Pcal power 7 Hz and up

Summary, next steps At “first blush,” looks like Pcal could replace TST in DARM actuation (once DARM servo locked). Some work on high-pass filtering, PUM/TST crossover, likely required Loop model with phases, stability, etc. Noise analysis Scheme for transitioning from TST to Pcal Etc.