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Table of Contents:
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NOTE:
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these motors have not yet been installed within the KPF system. We have also moved away from a Galil controller and are now baselining a Newport controller. This page will be updated with the relevant info when the motors are installed (likely during late 2023).
Introduction
When sources and filters change within the calibration unit, the image of the source moves with respect to the fiber. We had expected to compensate for these motions during alignment, but in practice this has not been possible.
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Software Actions
Action | Notes | |
|---|---|---|
| 1 | Home | Each motor will need a home command, where the actuator is retracted until a limit switch is hit. |
| 2 | Move to a position | Position given by number of steps away from home. |
| 3 | Two modes: automatic and manual | Automatic mode: Dispatcher reacts to any of the following:
The dispatcher will then move all 4 compensator mirrors to the correct positions for the new source and filter wheel settings. Manual mode: the dispatcher does not react to changes of the sources or filter wheels. |
| 4 | Error catching | Motors can never be commanded beyond XXXXX steps as it will cause the actuator to damage itself by extending too far. |
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Required Adjustable Settings
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Required Alarms
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Parameter
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Threshold
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Notes
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Relevant Datasheets & Manuals
Description
File
Source
Setting | When Needed | Notes | ||
|---|---|---|---|---|
Build | Observing | Maintenance | ||
Required Telemetry
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Parameter
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Report Frequency
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Purpose
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Notes
Look up table of positions | YES | NO | YES | Look-up table contains a set of 4 motor positions for each combination of:
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Relevant Datasheets & Manuals
Description | File | Source | |||||
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| 1 | Actuator User Manual |
| https://www.newport.com/mam/celum/celum_assets/resources/TRA_-_User_s_Manual.pdf?1 | ||||
| 2 | Actuator Data Sheet |
| https://www.newport.com/mam/celum/celum_assets/resources/TRA_Data_Sheet.pdf?1 | ||||
| 3 | Galil 4040 User Manual |
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Relevant Software
Description | File | Source | |||||||||
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| 12 | Jason Grillo’s software |
| Python code and lookup table created by Jason Grillo and used on the KPF Windows machine. |