Mon Aug 26 03:58:51 GMT 2013

Start Observations: 10:00 pm

Telescope at zenith, HBS running

added act 501 in act_wo_icc list. Modification installed.

Flattening

Tracknum nmodes note
20130826_050759 20  
20130826_051005 50  
20130826_051229 100 this is the new default flat
     
flattening with 200 modes with intmat: 20130825_140604/flat_data_301modes.sav failed (same result as yesterday)

we now try to build up a new inter matrix with the following tracknums: tr=['20130825_132358','20130825_160410']

flattening failed

flattening failed also when trying to flatten several times with 100 modes

INTMAT

A problem was found: last 1 or 2 modes are collected with zero command. That is particularly problematic when we want to join together two or more set of modes. While waiting for a fix, we collect IM with modes 0-200 in a single measure.
Tracknum modes amp notes
20130826_060154 0-200 default  
Again missing frames. We found that the lost frames were not necessarily the last ones, but some frame was missing within the sequence. That is Trigger problem. All the IntMat made up to now in this run are not good, all have at least one missing frame.

Fixing of the Trigger Problem

We found a way to estimate the number of missing trigger frames. The 4D log has been updated to show this info. The 4D log is here:

/towerdata/meas/adsec_calib/4d/4Dlog/yyyymmdd/4Dlog.out

Start troubleshooting

Reset the 4D: still missing frames

cleaned all the fiber connectors (excluded the one of SW BCU for the moment): still missing frames

Changed the trigger transceiver box with a spare: no longer missing frames OK

INTMAT

after resetting the 4D we found that the phasemap sign was changed. KEYWORD FACTOR=-1 added to hexalign and opt_int_mat_reduce2
Tracknum modes amp notes
20130826_082237 0-100 default  
20130826_082320 101-200 default  
20130826_093307 201-300 default  
20130826_093459 301-400 default  
20130826_101307 401-500 default  
20130826_101350 501-660 default non correction
20130826_124249 501-660 FORCE=05/0.3  

Flattening

Tracknum nmodes redid nm rms notes INTMAT
20130826_085121 101 178nm rms   20130826_082237
20130826_085322 101 174nm rms reflattening  
20130826_085547 101 174nm rms reflattening  
20130826_092338 201 116nm rms   20130826_082237+20130826_082320
20130826_092810 201 110nm rms reflattening  
20130826_093045 201 110nm rms reflattening  
20130826_100619 301 97   20130826_082237+20130826_082320+20130826_093307
20130826_100836 301 73 reflattening  
20130826_101051 301 71 reflattening  
20130826_101620 401 74   20130826_082237+20130826_082320+20130826_093307+20130826_093459
20130826_101837 401 65 reflattening  
20130826_101959 401 82 reflattening  
20130826_102315 401 67 reflattening  
20130826_105642 501 58   20130826_082237+20130826_082320+20130826_093307+20130826_093459+20130826_101307
20130826_110258 501 60 reflattening+hexalign  
20130826_110644 501 60 reflattening  
20130826_115211 661 52   20130826_082237+20130826_082320+20130826_093307+20130826_093459+20130826_101307+20130826_101350
20130826_115727 661   reflattening  
20130826_082237 661 55 reflattening note;avetime=100
20130826_082237 661 55 reflattening note;avetime=100
20130826_135227 600 40 reflattening after puting a large mask hole.
20130826_142940 600 30 reflattening with large mask. latched as default
print, build_int_mat(['20130826_082237','20130826_082320'])

convection is now affecting the data quality, so we decided to average images over a longer time span. see command below, where avetime is the total spanned time

print, opt_int_mat_reduce2(661,TRACK='20130826_082237', avetime=100)
INT MAT WITH SCALE FORCE

Running the intmat with the scale force factor applied. Command applied;AdOpt >print, i4d_opt_intmat(501,660, FORCE_SCALE=0.5/0.3)

With the new INT MAT the flattening is still high in the centre but it has improved in the edges; WFRMS:70nm.

A large mask covering all fringing effect of the mask hole is applied and it has been seeing that the forces aplied in the cetrer are less and the flat at the edges is better, the RMSWF goes around 36nm.

A large acquisition of the flat is taking to reduce the convections using the large mask. The command applied; AdOpt >print, opt_int_mat_reduce2(600,TRACK='20130826_082237', avetime=100)

Noise measurement

20130826_102500_noise

we evaluated that convection at 0.1 ms provides a WFE =40nm RMS

flood lights off

New interaction matrix

500x500, small mask ; AdOpt >print, i4d_opt_intmat(i*50,i*50+49,avera=11)&i+=1

After mode 500 we applied the command; AdOpt >print, i4d_opt_intmat(600,660,avera=11,FORCE_sc=0.5/0.3)&i+=1

comm4d.Produce is run for the set of intmats
Tracknum modes nave notes
20130826_150704 0-49 11  
20130826_150915 50-99 11  
20130826_151003 100-149 11  
20130826_151054 150-199 11  
20130826_151140 200-249 11  
20130826_151239 250-299 11  
20130826_151337 300-349 11  
20130826_151434 350-399 11  
20130826_151530 400-449 11  
20130826_151637 450-499 11  
20130826_151821 500-549 11 extra force
20130826_151910 550-599 11 extra force
20130826_152020 600-660 11 extra force
tracknum= ['20130826_150704','20130826_150915','20130826_151003','20130826_151054','20130826_151140','20130826_151239','20130826_151337','20130826_151434','20130826_151530','20130826_151637','20130826_151821','20130826_151910','20130826_152020']

Noise measurements (still flood lights off):

20130826_140000_noise

New intmat produce

with larger mask (masking also the mousehole), same folder as before (same dataset) tracknum is +1hr: 150915 --> 160915

['20130826_160704','20130826_160915','20130826_161003','20130826_161054','20130826_161140','20130826_161239','20130826_161337','20130826_161434','20130826_161530','20130826_161637','20130826_161821','20130826_161910','20130826_162020']

HEXAPOD POSITION:

X(mm) Y(mm) Z(mm) Rx(arcsec) Ry(arcsec) Rz(arcsec)
-0.13 0.92 4.2 -170 -143 0

Stop Observations: 8:30 AM

interaction matrix

20130826_150915

-- ArmandoRiccardi - 26 Aug 2013
Topic revision: r4 - 29 Aug 2013, AlfioPuglisi
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding Foswiki? Send feedback