IMACS Engineering Run, December 13-18 2004
- IMACS Engineering Run, December 13-18 2004
- Issues and Tasks
- Personnel and Observatory Support Required
- Report
Issues and Tasks
- MOE Engineering
- tap holes to assemble matrix ring to base plate
- DSS Engineering and Maintenance
- investigate and troubleshoot intermittent clamping malfunctions
- SMS Engineering and Maintenance
- investigate and troubleshoot 'empty mask' state and related misbehavior
- Science Camera Glycol Plumbing
- firm up plan for replumbing coolant lines
- Other Engineering and Maintenance
Personnel and Observatory Support Required
SBS
- Andy McWilliam
- Tyson Hare, arrives Dec. 13, 2004 (Monday), leaves Dec. 18, 2004.
LCO
- David Osip
- Telescope operator
- Machinist
Report
MOE Engineering and Maintenance
- MOE removal from DSS was demonstrated to D. Osip. D. Osip no like MOE removal procedure.
- After removal and partial disassembly as necessary, modifications were completed as planned.
- holes for assembling the matrix ring to the base plate were tapped, M10 x 1.5.
- Reassembled and tested, performing as expected.
DSS Engineering and Maintenance
- Clamping 'failures' were observed with both MOE and GTM 1 (300l). 'medium' return springs were added to the pin bushings on the 'heavy' side of MOE. 'light' return springs were added to the 'bottom' pin bushings of GTM 1. The flow control valves on clamp 'B' were adjusted to match the timing of the other clamps. The problem was not repeated after exercising the system through several clamping cycles.
- Wheel postions were checked and reindexed, the .ini file was updated. Clamping cycles seemed to execute more smoothly.
- GTM 2 doesn't exhibit the expected free play from the pins/wheel when mated to the matrix ring. Adjustment necessary.
- 300l grating was installed in GTM 1. 1200l grating was installed in GTM 4. GTM 4 was specifically modified and adjusted to achieve larger tilts and should be used for any programs requiring large tilt angles
SMS Engineering and Maintenance
- The proximity sensor at mask position 1 was found to be dead and replaced by Emilio Certa.
- During testing the proximity sensor at mask position 3 displayed intermittent behaviour. It was subsequently readjusted and seemed to be functioning normally.
- The Opto22 used for these signals was replaced.
- The SMS was test and operating without issue.
Science Camera Glycol Plumbing
- Plumbing issues and possible routes were investigate.
- Issues of importance to consider include:
- change tool clearance
- bulkhead orientation
- size of quick connects
- location of quick connects in the lines
- potential off bulkhead mounting of quick connect
- hard plumbing primary saddlebag lines together
Other Issues and Future Work
Other Issues
- Principal and SH Guide Cameras were physically inspected and exercised. No problems were evident. Both were operating as expected.
Future Work
- MOE flexure testing.
- Check calibration of all GTMs.
- New, acurate jigs are needed to check the positon of the pin blocks on the wheel and bushings on there base plates and adjust as necessary.
- A dummy base unit is needed for testing and operating the DSS during engineering.
- change front panel fasteners
- modify calibration lamp unit base plate - move cable feedthrough to the edge
- order Ne and NeHg Pen-Ray lamps
- prepare volume compensators for Jan 05 engineering run
- finish baffle/hartmann mask
- suggested software revisions
- setup tool
- add pull down menu functionality to disperser set up
- add DSS LOAD option
- add MASK LOAD button
- enggui
- add option to command insert of mask/disperser/filter as in mechgui, or a table of current .ini values
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acl 2008-11-21
