arnaud.pele@LIGO.ORG - posted 19:57, Monday 03 February 2014 - last comment - 08:51, Tuesday 25 February 2014(9774)
Op lev damping ETMX ITMX (WP 4427)
As we might need feedback loops from the optical lever to stabilize the motion of the test mass of ETMX and ITMX, the simulink models were temporary modified to include a link from the optical lever to the PUM and UIM masses.
This was done by copying over what has been done for the beamsplitter optical lever :
-
FOUROSEM_STAGE_MASTER.mdlwas modified to include two oplev inputs going through the OLDAMP filter bank (copied from BS). cf FOUROSEM_STAGE_MASTER_before/after.png. -
The new part was copied and renamed :
FOUROSEM_STAGE_MASTER_oplevfeedback.mdl -
QUAD_MASTER.mdlwas also copied and renamedQUAD_MASTER_oplevfeedback.mdland points to the newFOUROSEM_STAGE_MASTER_oplevfeedback.mdlpart for L1 and L2 stages (cf QUAD_MASTER_before/after.png)
A backup of the models h1sus{etmx/itmx}_Feb3rd2013.mdl was made under /opt/rtcds/userapps/release/sus/h1/models
Images attached to this report
Comments related to this report
I missed a few alogs explaning some modifications on the models. so here's the current status :
- h1susetmx and h1susitmx both have a disabled link with the common part FOUROSEM_STAGE_MASTER (L1 L2). Those two parts have been modified locally two add a path for the oplev