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= Green Laser Injection for Arm Pre-Lock = ## page was renamed from Upgrade 09/GreenLock
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We plan to install green lasers, which are phase locked to the PSL laser, at each end station to pre-lock the arm cavities before the lock acquisition.    . attachment:god_of_green.png




= Overview =

 The diagrams below show a conceptual design of the green locking technique

   <<ImageLink(green_vertex_preliminary_design.png,Upgrade 09/GreenLock/Preliminary design for the vertex,height=200)>>
   <<ImageLink(green_ETM_preliminary_design.png,Upgrade 09/GreenLock/Preliminary design for the end,height=200)>>

= Plans =

 || ''' long term plans ''' || ''' action item list ''' || [:Advanced_Techniques/Green_Locking/action_item_list] ||
 ||<|3> ''' past plans ''' ||''' October 2010''' || [:Advanced_Techniques/Green_Locking/October_2010] ||
 || ''' November 2010 '''||[:Advanced_Techniques/Green_Locking/November_2010] ||
 ||'''January 2011''' || [:Advanced_Techniques/Green_Locking/January_2011] ||
[[BR]]

= Developer's page =
 ||<:> ''''' Category ''''' ||<:> ''''' Links ''''' ||
 ||''' Optical Layout '''|| (1) [attachment:green_optics.png Table layout] (2) [[Optical_Layout|In-vac layout]] (3) [[Optical_Tables|Pictures of Tables]] ||
 || ''' Pictures of End tables ''' || (1) [[ETMY_table|Picture of ETMY table]] (2) [[ETMX_table|Picture of ETMX table]]||
 || ''' Lasers ''' || [[Advanced_Techniques/Green_Locking/Lasers|Lasers (specs, temp settings, etc.)]] ||
 || ''' Optics ''' || (1) [[Optical Layout#wedge|ITM wedge effect]] (2) [[Upgrade_09/Optics/RTmeasurement|Mirror RT measurement]]||
 || ''' Mode matching ''' || ([attachment:modematch_END.png mode matching at end table]) ||
 || ''' Electronics ''' || [:Advanced_Techniques/Green_Locking/Electronics]||
 || ''' SHG ''' || [:Advanced_Techniques/Green_Locking/SHG] ||
 || ''' Doubling Oven ''' || [attachment:PV40.pdf drawing of PV40 oven], [attachment:PVP2.pdf drawing of the base plate PVP2], [attachment:manual_oven.pdf manual for the covesion oven] ||
 || ''' Servos ''' ||[[Advanced_Techniques/Green_Locking/Servos|Servos]] ||
 || ''' Performance ''' ||[[Advanced_Techniques/Green_Locking/Noise Requirement|Noise Requirement]] ||
 || ''' Purchase list ''' || [:Upgrade 09/Purchase List/Green Locking] ||


= Links =
 || ''' aLIGO ALS wiki ''' || http://ilog.ligo-wa.caltech.edu:7285/advligo/Arm_Length_Stabilisation ||
 || ''' Servo modeling (!SimLink) ''' || https://nodus.ligo.caltech.edu:30889/svn/trunk/docs/upgrade08/Green_Locking/Servo_modeling/ ||

= Documents =
 ||<:> ''''' Title ''''' ||<:> ''''' Locations ''''' || ''''' Notes ''''' ||
 || ''' The 40m interferometer : prototyping aLIGO locking scheme ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=67127 G1100820-v1] || - ||
 || ''' Description of the optical / servo configuration ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=6888 DCC?] || - ||
 || ''' Arm Length Stabilization at the 40m prototype ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=39965 G1100301-v1]|| - ||
 || ''' ALS at the 40m ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=38604 G1100127-v2] || - ||
 || ''' Arm Length Stabilisation for Advanced LIGO ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=14040 G1000735-v1] || Experiment done by ANU team ||
 || ''' Arm Length Stabilization for Advanced GW Detectors '''|| [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=3134 G0900577-v3] || - ||
 || ''' Arm Length Stabilization VCO Noise requirements ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=13520 G1000703-v2] || - ||
 || ''' Arm Length Stabilization (ALS): The Plan for Testing at The 40m ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=10002 G1000293-v1] || - ||
 || ''' Advanced LIGO Arm Length Stabilization ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=1331 G0900215-v1] ||
 || ''' Lock acquisition study for Advanced LIGO''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=12173 T1000294-v1] || - ||
 || ''' Adv. LIGO Arm Length Stabilisation Design ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=1625 T0900144-v4] || -||
 || ''' Adv. LIGO Arm Cavity Pre-Lock Acquisition System ''' || [https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=27983 T080139-x0] || comparison with other techniques ||

  • attachment:god_of_green.png

Overview

  • The diagrams below show a conceptual design of the green locking technique

    • green_vertex_preliminary_design.png green_ETM_preliminary_design.png

Plans

  • long term plans

    action item list

    [:Advanced_Techniques/Green_Locking/action_item_list]

    past plans

    October 2010

    [:Advanced_Techniques/Green_Locking/October_2010]

    November 2010

    [:Advanced_Techniques/Green_Locking/November_2010]

    January 2011

    [:Advanced_Techniques/Green_Locking/January_2011]

BR

Developer's page

Links

Documents

Advanced_Techniques/Green_Locking (last edited 2015-06-23 03:44:00 by EricquinteroATligoDOTorg)