Summary of Current Situation of In-vacuum Steering Mirrors

Document #:

JGW-T2112592-v7

Document type:

T

Submitted by:

Yuta Michimura

Updated by:

Yuta Michimura

Document Created:

24 Feb 2021, 21:47

Contents Revised:

17 Jan 2025, 15:44

DB Info Revised:

17 Jan 2025, 15:44

Abstract:

Slides summarizing the current situation of in-vac steering mirrors.
- Around MCF and IFI (REFL related)
- Around IMMT1 (ISS related)
- Around PR2 and SR2 (ALS related)
- Around OFI and OMC (AS RF, OMC REFL, OMC TRANS related)

v4: Added AoI for IFI related steering mirrors based on JGW-E2112952
v5: Updated info for IMMT1 trans based on JGW-G2112943 and JGW-T2112949
v6: Corrected info for OFI and OMC steering mirrors based on input from Matteo Leonardi

===== MIRROR MOUNTS and PEDESTALS =====
STM1, STM2
Newport 8822-AC-UHV (mirror center height 38.1 mm)
Pedestal JGW-D1504243 (height 172 mm)
https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4243

POM1
Newport 8822-UHV (mirror center height 34.9 mm)
Pedestal JGW-D1503950 (height 175 mm)
https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3950
Assy JGW-D1504162
https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4162

POM2
Newport U200-A2K (mirror center height 1.38 inch (Assy says 34.59 mm, but probably wrong)); https://klog.icrr.u-tokyo.ac.jp/osl/uploads/21564_1658409585_IMG_1451.jpg
Pedestal JGW-D1503950 (height 175 mm)
https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3950
Assy JGW-D1504213
https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4213

POP POM, POS POM (at back of PR2, SR2)
Newport 8822-UHV
Obelisk post (and height adjustment plate) JGW-D1707299
POS POMはattachment付きで、Assy JGW-D1909579
https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9579

OMC area
Opto-Sigma VMHG-50.8 (mirror center height 35 mm)
Pedestal JGW-D1503950 (height 175 mm)
Assyの図 JGW-D1503916
https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3916

Files in Document:

• InVacSteeringMirrors.pdf (1.4 MB)
• InVacSteeringMirrors.ppt (5.0 MB)

Topics:

• Detector:Interferometer
• Activity:KAGRA
• Detector:Optics
• Detector:Interferometer Sensing and Control

Authors:

• Yuta Michimura

Keywords:

ISC MIF IOO ISS OMC OFI IFI

Related Documents:

• JGW-G2112943: About the IMMT1T setup
• JGW-E2112952: Angles of incident: STM1, STM2, POM1, and POM2 in input optics
• JGW-D1812591: [CONFIDENTIAL] Specification sheets for dichroic mirrors around POP and POS
• JGW-D2112527: IFI chamber expansion baseplate
• JGW-T1706953: Cartoon of the optical layout around IMC, IFI and IMM
• JGW-G2012232: ISS meeting (2020/11/10)
• JGW-G1808954: ALS status (Extended chief meeting on Sep. 3rd, 2018)
• JGW-T1605261: Cartoon of the optical layout around PRs
• JGW-L1909580: Light tools around SR2
• JGW-T1605967: Cartoon of the optical layout around SRs
• JGW-T1808230: Output Optics Coordinates
• JGW-D2011398: 3D model of optics in OMC and OMM chamber (on January 19, 2020)

Referenced by:

• JGW-T2112949: Notes on IMMT1,2 Transmission
• JGW-D2113029: [CONFIDENTIAL] Specification sheet for IMMT1T ISS POM
• JGW-D2113030: [CONFIDENTIAL] Specification sheet for in-vac all reflective steering mirrors
• JGW-D2516483: Alignment jigs for OMC REFL pick off mirror