Upgrade of the 40m

• Overview ~

• Upgrade items & Preparation status

  • Optical Configuration

    • Optical Layout

    • Arm Battesimo

  • Green Locking

  • Length Sensing and Control Design

  • Optics

    • Aux Optics

    • Optics Cleaning Plan (Dec 2009)

  • Mechanics

    • Suspensions ~ SOSs and TTs

  • Electronics

    • RF System

    • Multi Resonant EOM

  • PSL Upgrade

    • PSL Table Lifting

    • New PSL Layout

  • New CDS

  • Purchase List

• Installation Plan ~

Events

• Dec 21, 2010: ETMX/Y installation, In-Vac installation finished, evacuation

• Nov 3, 2010: Slow green beat note control

• Oct 22, 2010: First green beat note found

• Oct 5, 2010: X-End green beam reahed to the PSL table

• Sep 27, 2010: 3rd Vent

• Sep 20, 2010: CDS switch over to the new system

• Sep -17, 2010: PSL upgrade initial work done

• Aug 26-, 2010: PSL upgrade initial work

• Aug 5-25, 2010: PSL table upgrade

• Aug 1, 2010: Back to Vacuum

• Jul 20, 2010: 2nd Vent

• Jun 18, 2010: Input MMT installation and measurement completed

• May 27, 2010: First Green Locking of the arm

• Apr 23, 2010: First SHG light at the 40m for this upgrade

• Apr 13, 2010: PRM/SRM removal form the table

• Apr 12, 2010: ITMX SOS installation completed

• Apr 6, 2010: ITMY SOS installation completed

• Mar 2, 2010: Vent

• Feb 20, 2010: Power supply stop

• Jan 28, 2010: TAC meeting Jan 2010

• Dec 7-11, 2009: Vent for test mass cleaning

• Nov 12-17, 2009: ETMY CDS test

TAC (Technical Advisory Comittee) meetings

• TAC meetings

Upgrade documents

• [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=231 Upgrade Doc in DCC]

• [http://lhocds.ligo-wa.caltech.edu:8000/advligo/ISC_Modeling_Software/CVSinstructions?highlight=(CVS) "MIT CVS repository instructions for accessing AdvLIGO modeling"]

• 40m upgarde plan scrutiny Ver. 9/29/2009 [attachment:upgrade09_090929.pdf [PDF]][attachment:upgrade09_090929.graffle [OmniGraffle]]

• 40m upgarde status Ver. 1/06/2010 [attachment:100106_upgrade09.pdf [PDF]][attachment:100106_upgrade09.graffle [OmniGraffle]]

• 40m upgrade status (KA, '10 March LVC) [attachment:LVC_March_40m_karai_100315.pdf [PDF]] [attachment:LVC_March_40m_karai_100315.tar.gz [tgzed graffle file ]]