Reports until 14:57, Friday 22 March 2013
H1 SUS
arnaud.pele@LIGO.ORG - posted 14:57, Friday 22 March 2013 (5866)
Alignment offsets sliders range HSTS/HLTS

Mark B. Arnaud P

After Betsy realized the range of the ALIGNMENT OFFSET slider was much greater than the real actuation range (see alog entry 5852), we decided to change the max and min values of the slider for all the suspensions. For now only HSTS and HLTS medm screens have been modified. BSFM and ETM/ITM will be done after verification of the actual range.
The actuation range is limited by the DAC ouptut (2^18/2=131072), which can be transposed in urad for Pitch and Yaw. The chosen numbers can be found in the following documents (HLTS and HSTS), in the spreadsheet page 3.

https://dcc.ligo.org/DocDB/0100/T1300083/001/T1300083-v1.pdf
https://dcc.ligo.org/DocDB/0100/T1300079/001/T1300079-v1.pdf

Now the sliders go from +/- 4195 for HSTS Pitch, +/- 7828 for HSTS Yaw, +/-4409 for HLTS Pitch, and +/- 1708  for HLTS Yaw (see pictures attached)

Technical details

In order to do that :

Created two adl files in /opt/rtcds/userapps/release/sus/common/medm/hxts
SUS_CUST_HSTS_M1_OPTICALIGN.adl
SUS_CUST_HLTS_M1_OPTICALIGN.adl
copied from
SUS_CUST_HXTS_M1_OPTICALIGN.adl

opened
SUS_CUST_${HLTS/HSTS}_OVERVIEW.adl in edit mode with medm
changed the name of the argument calling the adl file from SUS_CUST_HXTS_M1_OPTICALIGN.adl to SUS_CUST_${HLTS/HSTS}_M1_OPTICALIGN.adl

opened
SUS_CUST_${HLTS/HSTS}_M1_OPTICALIGN.adl with medm

changed the range
for HLTS  
from +/-12300 urads to +/-4409 urads for PITCH
from +/-12300 urads to +/-1708 urads for YAW   

for HSTS
from +/-12300 urads to +/-4195 urads for PITCH
from +/-12300 urads to +/-7828 urads for YAW  

Modified the label above the gain from :
[DAC Counts (in EULER Basis)] into [Counts (in EULER Basis)]

svn added and commited the new and modified files in the following folder : /opt/rtcds/userapps/release/sus/common/medm/hxts

Images attached to this report