-- RunaBriguglio - 15 Mar 2011

Chopping preparation

The shell is set at 80um gap and a suitable shape is loaded. To reduce fringes density on the 4D, because of change of calibrations at 80um gap, the shape is loaded using few modes only:

Commands

print, fsm_set_flat(/chop)

shape='/towerdata/adsec_calib/flat/20110314_092654/flattening_result.sav'

print, fsm_load_shape(shape, force_max_mode=100)

The shell is then flattened, acquiring an OIMat and running the flattening procedure
OIMat Modes Electrical data Optical data WFE
20110315_092813 250 20110315_101929/flattening_result.sav 20110315_101929_flat250modes.h5 40nm

The shell is tilted to +25um: print, test_chopping_position(0, /cmd): this to prepare the system

print, test_chopping_position(25e-6, /noset) print, hexalign()

flattening: Chop_a: +25um : 20110315_122208/flattening_result.sav

print, test_chopping_position(0, /noset): this to come back

print, test_chopping_position(-25e-6, /noset)

flattening: OIMAT=20110315_092813 (350modes)

chop_b: -25um: 20110315_123153/flattening_result.sav

Optical test of chopping

pos_a=make chopping_tilt(25um)

pos_b=flat/20110315_123153/flattening_result.sav

Full sampling of diagnostics + optics

print, i4d_chop(200, /save).

/towerdata/adsec_calib/chopping: diag_data

tracknum=20110315_164516

tracknum=20110315_170700

Sampling with variable 4D offset

Tracknum A Tracknum B offset  
20110315_165356 20110315_171435 30  
20110315_165430 20110315_171511 31  
20110315_165503 20110315_171554 32  
20110315_165537 20110315_171632 33  
20110315_165611 20110315_171716 34  
20110315_165645 20110315_171751 35  
20110315_165724 20110315_171829 36  
20110315_165807 20110315_171913 37  
20110315_165842 20110315_171948 38  
20110315_165926 20110315_172032 39  
20110315_170010 20110315_172113 40  
20110315_170045 20110315_172148 41  
20110315_170120 20110315_172227 42  
20110315_170158 20110315_172306 43  
20110315_170241 20110315_172345 44  
20110315_170316 20110315_172430 45  
20110315_170400 20110315_172505 46  
20110315_170435 20110315_172549 47  
20110315_170519 20110315_172624 48  
Topic revision: r3 - 15 Mar 2011, RunaBriguglio
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