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chara:files:mircx_alignlab [2018/04/11 18:08] 127.0.0.1 external edit |
chara:files:mircx_alignlab [2018/07/05 09:17] jones |
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- | -------------------------------------------------------------------------------- | + | ====== Lab Alignment ====== |
- | | + | |
- | | | __ _| |__ / \| |(_) __ _ _ __ _ _ __ ___ _ __ | |_ | + | |
- | | | / _` | '_ \ | /_\ | || |/ _` | '_ \| '_\/_ |/ _ \| '_ \| __| | + | |
- | | |__ | (_| | |_) | | | | | || | ( | | | | | | \/| | __/| | | | |_ | + | |
- | |____| \__, | + | |
- | |___/ | + | |
- | 1. After the daytime staff have aligned the vis/IR dichroics and IR Mirrors to the MIRCx table, | ||
- | you can begin the lab alignment of MIRCx. | ||
- | or whenever one of the MIRCx pickoff mirrors are taken out of the beam. | ||
- | Make sure the CHARA corner cubes are in all of the beams. | ||
- | 2. Confirm that the MIRCx pickoff mirrors are on the kinematic mounts. | + | 1. After the daytime staff have aligned the vis/IR dichroics and IR Mirrors to the MIRCx table, you can begin the lab alignment of MIRCx. |
- | the IR alignment target on the edge of the MIRCx table is out of the beam. | + | |
- | Take off the lens cover on the MIRCx camera. | + | 2. Confirm that the MIRCx pickoff mirrors are on the kinematic mounts. |
3. Turn on the white light source (POS 4). | 3. Turn on the white light source (POS 4). | ||
- | 4. Follow the instructions in the MIRCx User Manual to start the mircx server and open | + | 4. Follow the instructions in the MIRCx User Manual to start the mircx server and open the GUIs for mircx_ircam, |
- | the GUIs for mircx_ircam, | + | |
- | 5. Follow the instructions in the MIRCx User Manual to start the camera (Gain 5), take backgrounds, | + | 5. Follow the instructions in the MIRCx User Manual to start the camera (Gain 5), take backgrounds, |
- | update/send the fiber positions using mircx_parameters, | + | |
6. Open B1-6, IR1-6, and WL shutters. | 6. Open B1-6, IR1-6, and WL shutters. | ||
- | 7. On Fiber Explorer, go to the "Fiber Mapping" | + | 7. On Fiber Explorer, go to the "Fiber Mapping" |
- | light source, set num_steps = 15 and XY step = 8 um. Select the check boxes only for | + | |
- | the two visbeams for which you are currently searching. | + | |
- | to begin the fiber explorer search for the two beams. | + | |
- | + | ||
- | If you find the light on one or more beams, then click "Move to max" or "Move to Gauss peak" | + | |
- | for the beams that have light. | + | |
- | after moving the fiber - the 8 um step size is not too sensitive for proper centering. | + | |
- | After moving the fibers, do a finer search using num_steps of 9 at a step size of 2-4 um to | + | |
- | | + | |
- | If you do not find the light, | + | If you find the light on one or more beams, then click " |
- | + | ||
- | If you see light on the detector while searching, but not in the fiber maps, then this means that | + | |
- | the xchan positions are not set correctly. Try closing all but one shutter and search | + | |
- | only one beam at a time using the " | + | |
- | than the xchan quadrant. | + | |
- | | + | |
- | | + | |
- | to Click "Send Values to RT") and then click "Load xchan pos from mirkwood" | + | |
- | Fiber Explorer. | + | |
- | Also try looking for light on a different visbeams pair, just to confirm whether there | + | If you do not find the light, |
- | is light coming through at all. | + | |
- | all the shutters are open and do a visual check in the lab to make sure corner cubes are in and | + | |
- | no targets are blocking the beam path. | + | |
- | If you do not find light on a particular beam (but confirm that light is getting though to | + | If you see light on the detector while searching, but not in the fiber maps, then this means that the xchan positions are not set correctly. |
- | the other beams), you can try searching the entire range of the fiber mount. | + | |
- | To do this, go to the Luminos Stage tab on Fiber Explorer. | + | |
- | | + | |
- | the center of the range (64,000, 64,000) and click " | + | |
- | 0 to 128,000). | + | |
- | set the search range to the full range to num_steps = 64 at 8 micron step sizes. | + | |
- | | + | |
- | to be done by eye using the laser on the MIRCx table - EXPERTS ONLY - do not move any optics | + | |
- | if you are not certain what they do. Contact the MIRCx team for advice. | + | |
- | 8. The last step is to record the counts ("Get Intensity" | + | Also try looking for light on a different visbeams pair, just to confirm whether there is light coming through at all. If not you don't see light on any beam, then check to make sure all the shutters are open and do a visual check in the lab to make sure corner cubes are in and no targets are blocking |
- | | + | |
- | The current ratios for xchan/data are 2-3 (rows 15 and 45 in cross-section view). | + | |
- | | + | |
- | | + | |
- | | + | |
- | | + | |
- | -------------------------------------------------------------------------------- | + | If you do not find light on a particular beam (but confirm that light is getting though to the other beams), you can try searching the entire range of the fiber mount. To do this, go to the Luminos Stage tab on Fiber Explorer. |
+ | 8. The last step is to record the counts ("Get Intensity" |