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Diamond Radiator Thinning Using an Excimer Laser (view source)
Revision as of 18:45, 5 March 2010
, 18:45, 5 March 2010→Updates for February 2010
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*44 of 45 spark plugs have been reinstalled with new o-rings. The brass nut on the last plug stripped due to corrosion while trying to extract it. Here is a picture of what it looks like
*Performed secondary leak check using the Veeco helium leak detector. We were able to actively maintenance the plugs to ensure that each one was "leak free". After filling the system with 2200mbar (operating pressure) the leak rate was determined to be 10mbar/hour. Still two times greater than the excepted leak rate of 5mbar/hour.
*The last plug is believed to be the main leak source as bubbles can be seen escaping from the site when Snoop leak detector is used. Plans are being made to extract this corroded/stripped/seized nut.
*After much deliberation, it has been decided that the only way resolve the leak problem is to remove the spark plug array completely. This will allow us to remove the stripped nut.
*The array had been removed from the lasing cavity and the nut was extricated using an "Easy Out" and a T- wrench. The photos below illustrate the process and capture the elusive inner cavity of the excimer laser.