Changes between Version 7 and Version 8 of docs/CommissioningPlan/P2.9


Ignore:
Timestamp:
02/04/21 12:50:00 (4 years ago)
Author:
kradhakrishnan
Comment:

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  • docs/CommissioningPlan/P2.9

    v7 v8  
    1  == P2.9        Flexure tests ==
    2 •       **Phase**               :       2 
     1== P2.9 Cryostat warm up check ==
     2•       **Phase**               :       1 
    33•       **Status**              :       Draft   
    44•       **Category**            :       Daytime testing (functionality and operability) (C2)
    5 •       **Recurrence**  :       once at commissioning
    6 •       **Duration**            :       3 days
     5•       **Recurrence**  :       at the end of every SHARK-NIR run?
     6•       **Duration**            :       2 days
    77**Description**
    8 •       This activity corresponds to the flexure tests for the SHARK-NIR.
     8•       Checking the cryostat warming up procedure.
    99**Prerequisites**
    10 •       If relevant, estimate and remove the NCPA using the phase-diversity method.
    11 •       RR mounted on SX side.
     10•       SHARK-NIR connected to LBT network.
     11•       Automatic logging of the cryostat temperature
    1212**Procedure**
    13 •       Test the positions of the various opto-mechanical components within the instrument using optical feedback while moving the telescope in elevation.
    14 •       Change the velocity and acceleration of the movement of the telescope in elevation if required.
    15 •       Remember to perform the tests for all the observing modes (whatever possible with RR or internal light sources)
    16 •       You may want to disentangle the flexure of the RR while moving the telescope in elevation by comparing the optical feedback for the same movement with the internal light source.
    17 •       This test will also test the working of the LBTO AO system while the telescope is moving in elevation.
    18 •       Compare the results with that of Padova flexure tests.
     13•       Run the cryostat warm up sequence
     14•       Check how the system is performing every 30 minutes
    1915**Success criteria**
    20 •       All the images and data are saved for analysis or to create the lookup table.
     16•       Cryostat warmed up without any issues.
     17•       The temperature at the detector is stable at ??
    2118**Notes**
    22 •       If the test results are not satisfactory, this activity may be repeated again after making proper counter measures to reduce the flexure.
     19
    2320**LBTO support**
    24 * Authorize SHARK-NIR on the SX side.
    25 * RR will be required on the SX side.
    26 * Support from LBT SW Team, LBTI/Arcetri team to run SOUL AO
    2721
    2822**Associated SHARK-NIR personnel**
    2923
    30 
    3124**Date performed and by whom**
    32 **Comments**
    33 
    34 MB: not sure changing elevation vel and acc is doable, but even if not sure it makes sense. At night we will not be able to control this, so i would say it is betetr to leave the standard parameters [yes, it is possible. i have done it talking to mountain manager for LN.]
    35 
    36 MB: concerning RR flexures, from arcetri videocon you need to keep the loop closed while going down, so this might not be optimal for us, as it means mirrors are shifted...let's discuss again [ yeah, need discussion]
    37 
    38 LM: I would make explicit that the scope of this test is to measure the shift of the PSF at relevant focal planes (TECCAM and SCICAM), of the pupil image and of the optical elements (in particular coronagraphic masks) for different telescope elevations and bearing rotations. Part of these measurements takes place during NCPA measurement 2.6 (PSFs shift). 
    39 I do not understand this part "Change the velocity and acceleration of the movement of the telescope in elevation if required.". As Maria pointed out, I think we should not run SOUL while changing elevation, but yes, we need to discuss.