Changes between Version 20 and Version 21 of docs/CommissioningPlan/P1.8

Timestamp:

04/22/22 18:21:42 (3 years ago)

Author:

kradhakrishnan

Comment:

--

docs/CommissioningPlan/P1.8

@@ -1 @@
-== P1.8 Internal alignment verification == 
+== P1.8         Complete system functional verification, filter artifacts/defects verification, NCPA measurement, and internal tip-tilt loop verification == 
 
 - **Phase**             :       1  
@@ -5 +5 @@
 - **Category**  :       Unpack, Assemble, and Verification (C1)
 - **Recurrence**        :       once
-- **Duration**  :       4 days
+- **Duration**  :       1.5 days
 
 **Description**
-- Check the internal alignment of the SHARK-NIR using the light sources within.
+- Checking the working of motors and light sources within SHARK-NIR using optical feedback. Finding the filter defects/artifacts using an internal calibration source (flat-field) within the instrument. Measure the NCPA internal to the SHARK-NIR and correct using the ALPAO-DM. Check the working of the internal tip-tilt loop using calibration unit light sources, C-RED2, and ALPAO-DM.
 
 **Prerequisites**
-- SHARK-NIR connected to LBT network.
-- Electronics cabinets on.
+- SHARK-NIR is connected to the LBT network.
+- Electronics racks on.
+- DM best shape uploaded (shape minimizing internal aberrations)
 - The cryostat should be running and cooled down.
+- P1.7 should be completed.
 
 **Procedure**
-- Use the on-axis calibration fiber, check if the PSF position on the scientific detector is consistent with the one recorded before shipping for multiple bearing angles. Perform Phase Diversity measurement to compare the retrieved aberrations on the on-axis PSF with the ones measured before shipping.
-- Check the pupil position at the detector and verify the consistency with the one before shipping.
-- Check the relative alignment of the coronographic masks.
-- Verify the contrast obtained for different sets of masks on the scientific camera and compare it with the values before shipping. 
-- If necessary, re-align the optical bench internally (this is not anticipated, and the time above does not consider this). 
+- When the services are up and running, after the motors are sent to home positions, each of the individual motors is individually tested for their different named/nominal positions. 
+- The light sources within SHARK-NIR are used simultaneously to check the working of the motors by looking at the optical feedback.
+- Check the CRED-2 and ALPAO-DM SW using optical feedback.
+- Take the images of all the filters using the internal calibration source (flat-field) within the instrument to locate/find out the filter defects/artifacts, if any. You may take short- and long exposures to get better contrast of the features if required.
+- Check the filter wheel position monitoring script detailed in [wiki:/docs/Commissioning/SNM1 SNM1]. Save the data in the repository.
+Run the Phase-diversity routine using the images taken with the SHARK-NIR internal calibration sources to measure the NCPA within (excluding the deployable arm).
+- Run the internal tip-tilt loop routine for a defined (or set of) brightness of the source (star).
+- Check its efficiency in keeping the PSF at the C-RED2 hot-pixel.
+- Save data to the repository and analyze them.
 
 **Templates**
+- SHARKNIR_ci_mon_LyotMaskPos (not released)
+- SHARKNIR_di_mon_MaskRepeatability (not released)
+- SHARKNIR_di_cal_NCPA (not released)
+- SHARKNIR_gen_tiptilt_loop (not released)
 
 **Success criteria**
-- The on-axis spot at the SCICAM is where it should be across the bearing rotation.
-- Use pupil images and compare.
-- PSF quality across (using in-focus and out-of-focus fibers).
-- Coronographic masks are co-aligned.
+- All the motors can reach the named positions / nominal positions.
+- All the light sources are working and confirmed through optical feedback at the SCICAM.
+- Filter wheel position monitoring script is run successfully and data is saved in the repository.
+- CRED-2 AND ALPAO-DM working normally.
+- All the filter images are saved.
+- Internal NCPA is measured and the PSF shows improvement in its quality after the NCPA correction using the ALPAO DM.
+- Internal tip-tilt routine works fine and the PSF at the C-RED2 is stable within the required precision.
+- All the data and analysis are saved in the repository.
 
 **Notes**
-- The 4 days mentioned here do NOT account for a complete re-alignment of SHARK-NIR, but only minor adjustments (which is what we expect).
 
 **LBTO support**
 - Liquid Nitrogen refill is required in the cleanroom.
-- We will need lights ON and OFF during the re-alignment of the instrument inside the cleanroom.
-- 4D interferometer (TBC).
 
 **Date performed and by whom**