-- RunaBriguglio - 10 Dec 2011

Alignment

System aligned at:

HP= 4.86 -1.199 4.65 635 873

M3 -1335 150 0

ali

FF Matrix Acquisition

tracknum 20111210_141446

20 iterations, modal

large residual on act#625, removed

Refining the flattening

The initial mirror shape, loading the flattening calibrated yesterday, is higly astigmatic.

we assume that the astigmatism comes from the recent elevation slew to mount the RRH
OPD RMS RMS no astig
20111210_173500_starting condition.h5 560 nm 60nm

test of reloading the same default shape (corresponding to 20111209_214832)
OPD RMS RMS no astig
20111210_174730_load_shape_20111209_214832.h5 560 nm 60nm
difference between them shows the convection pattern trapped in the flattening command

20111210_204101_flat20modes

Test of coma free flattening

Default flat loaded (20111209_214832). this flat corrects the coma
Hexalign
OPD: 20111210_175400_comatest_a
New flat loaded: default_20111209.sav. this flat does not correct the coma
OPD: 20111210_175600_comatest_b
Hexalign
OPD: 20111210_175700_comatest_c
this new position should now be at zero alignment coma

Now, we correct the mirror coma


rip
fsm_set_flat(/no_fla)
OPD: 20111210_180023_shell_offloaded
Flattening 100 modes: no result
flattening 20 modes 20111210_180300_flat20modes
flattening 100 modes 20111210_180423_flat100modes
flattening 300 modes 20111210_180655_flat300modes
flattening 600 modes 20111210_180949_flat600modes


flat to be used:

20111210_180949_flat600modes

act 625 excluded

New FF Matrix loaded into the configuration

and act 625 removed

New Intmat

loaded flat 20111210_180949_flat600modes

Int Mat
Tracknum modes amp  
20111210_184600 0-250 150  
20111210_201752 0-100 100  
20111210_201834 101-250 70  
20111210_184734 251-500 150  
20111210_184935 251-500 70  
20111210_185058 501-660 70  
20111210_193234 501-660 30  
From now on, series of errors in the flattening procedure. the flattening command explodes in forces when trying to apply more than 200 modes.

it seems that the keyword n2drop=3 fixes the problem. during the last

follows the series of errors......

fsm_set_flat(/no_flat)
flat 10 modi
il flat dopo 200 modi esplode in forze. riprendo gli ultimi 160 modi
20111210_194319_flat600modes ok
itero la procedura
20111210_194839_flat100modes
continuo a non convergere
carico flat 20111210_180949_flat600modes
e spiano con intmat nuova
20111210_195750_flat600modes
riprovo
n2drop!!!1
20111210_203545_flat600modes flat fina,le con matrice nuova ed n2drop=3

___________________ end of errors

Fancy measurement of the shell offloading and pistoning

20111210_184100_shelloffload

Final flattening

fsm_set_flat(/no_flat)

using intmat=20111210_201752, n2drop=3
N modes Electrical result Optical result WFE   notes
20 20111210_204101/flattening_result 20111210_204101_flat20modes 450    
100 20111210_204226/flattening_result 20111210_204226_flat100_modes 81    
400 20111210_204415/flattening_result 20111210_204415_flat400modes 37   best
660 20111210_204627/flattening_result 20111210_204627_flat660modes 34    

Sampling of Mirror Modes for Fernando

see bottom of the page

New Flattening (aiming high, con sottofondo garibaldino)

OPD: 20111210_215900_final_condition

compare with last flat: astigmatism variation(40nm)

HBS unfortunately off
Electrical data Optical data WFE nm forces minmax HBS notes
20111210_220205 20111210_220205_flat_660modes 43   off  
20111210_220631 20111210_220631_flat_660modes_ave.h5 28   off time averaging, astigm
  20111210_220800 22   off burst 25, astigm
20111210_221728 20111210_221728_flat_660modes_ave60.h5 23   off burst 25, astig
20111210_223622 20111210_223622_flat_660modes_ave60        
  20111210_222800.h5        
  20111210_223200.h5        
20111210_223622 20111210_223622_flat_660modes_ave60.h5 21   on  

Test of load shape

file WFE WFE no astig
20111210_221200_load_shape_20111210_220631 74 27
this is to be investigated. does it make sense???

Test of Modes repeatability

Tracknum modes
20111210_224034 0-250
20111210_224133 0-250
20111210_224235 251-500
20111210_224338 251-500
20111210_224440 501-660
20111210_224530 501-660

Noise measurements

Tracknum HBS+driver lights  
20111210_182500_convection on on  
20111210_191400_convection_nolights on off  
20111210_215700_convection on? off?  
20111210_223400_convection off off  
20111210_224600_convection on off  

Tracknum for Fernando

!! HBS on, Elev driver enabled, flood lights off
Tracknum modes amp
20111210_205121 0-14  
20111210_205346 15-29  
20111210_205519 30-44  
20111210_205633 45-59  
20111210_205842 60-74  
20111210_205949 75-89  
20111210_210100 90-104  
20111210_210216 105-119  
20111210_210327 120-134  
20111210_210501   80
20111210_210653 150-164  
20111210_210806    
20111210_210923 180-194  
20111210_211110 195-209  
20111210_211240 210-224 70
20111210_211423 225-239 70
20111210_211533 240-254 70
20111210_211644 255-269 70
20111210_211801 270-284  
20111210_211915 285-299 70
20111210_212034 300-314 60
20111210_212201 315-329 60
20111210_212400 330-344  
20111210_212520 345-359 60
20111210_212652 360-374 60
20111210_212824    
20111210_212929 390-404  
20111210_213042 405-419  
20111210_213203 420-434 50
20111210_213321 435-449  
20111210_213433 450-464  
20111210_213605 465-479  
20111210_213827 480-494  
20111210_213954    
20111210_214130 510-524  
20111210_214318 525-539  
20111210_214445 540-554  
20111210_214626 555-569  
20111210_214813 570-584  
20111210_214922 585-599  
20111210_215038 600-614  
20111210_215138 615-629  
20111210_215249 630-644  
20111210_215400 645-659  
20111210_215513 660-662  
     
_______

20111210_204101_flat20modes

metodo per eliminazione coma

caricare flat di default (20111209_214832) che corregge la coma
allineamento con hexalign
misura 20111210_175400_comatest_a
caricare flat default_20111209.sav questo flat non corregge la coma (dello specchio?)
misura 20111210_175600_comatest_b
allineamento con hexalign
misura 20111210_175700_comatest_c


tecnica:trovo posizione a coma nulla con shell offlodata
rip
fsm_set_flat(/no_fla)
misura 20111210_180023_shell_offloaded
spianamento 100 modi
non si riesce a spianare
spianamento 20 modi 20111210_180300
misura 20111210_180300_flat20modes
spianamento 100 modi 20111210_180423
misura 20111210_180423_flat100modes
spianamento 300 modi 20111210_180655

spianamento 600 modi 20111210_180949
20111210_180949_flat600modes

tracknum to be used:20111209_200618
Topic revision: r4 - 11 Dec 2011, RunaBriguglio
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