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Reports until 17:17, Wednesday 10 September 2014
H1 SEI
jeffrey.kissel@LIGO.ORG - posted 17:17, Wednesday 10 September 2014 - last comment - 10:22, Friday 12 September 2014(13870)
LHO SEI Team + Seb's To-do List Sep 11 - Sep 19
H. Radkins, J. Warner, S. Biscans, J. Kissel

Here's a prioritized list of things the LHO SEI Team + Seb intends to tackle (or start tackling) over the next 10 days or so.

(1) Fix problems with ITMX ST1 [[DONE -- aLOG pending shortly]]

(2) (a) Add control of sensor gain and whitening settings to matlab transfer function scripts to ensure they're *always* in the right configuration. 
    (b) Fix blend filter design plots in commissioning scripts to show the blend design MUCH better than it currently does.

(3) Finish commissioning HAM4 and HAM5 ISIs and HEPIs

(4) Support commissioning efforts with "spot" improvements, if possible.

(5) Resurrect Fabrice's Standardized Commissioning Steps list

(6) Use (5) to assess all chambers, to see where we are -- at least with the "fixed" stuff

(7) Gather "current performance" plots for all chambers

(8) Gather HAM2 and HAM3 in-vac, HEPI unlocked, floating, with fluid TFs and HEPI-Position-controlled ISI TFs to help investigation with HAM4 and HAM5 results

(9) Resurrect plant comparison script and use it to compare in-vac transfer functions between HAM and BSC ISIs

(10) Teach Jim and Hugh how to commission sensor correction / feed forward.

(11) Play with Beam Rotation Sensor at EX -- try to get some performance improvements

(12) Think hard about HAM and BSC performance models.
Comments related to this report
jess.mciver@LIGO.ORG - 17:40, Wednesday 10 September 2014 (13871)

It would be great if you could also look into the problem reported in alog 12818 in July.

Summary: the archived, science frame versions of the ETMY ground motion monitor channels are still not recording the data properly, but the STS2 sensor looks fine. 

sebastien.biscans@LIGO.ORG - 10:22, Friday 12 September 2014 (13902)

Hey Jess,

It seems that everything is fine on a simulink/adc point of view. The issue is that the MEDM is not set up properly: the matrices are wrong, therefore we're not sending the signal to the frames, but to nothing ...

We just have to change the matrices to fix that. We'll do ASAP.

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