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Diamond Radiator Thinning Using an Excimer Laser (view source)
Revision as of 15:48, 14 February 2010
, 15:48, 14 February 2010→Updates for January 2010
* Optics will be cleaned once we receive our new supplies and the laser must be realigned using a HeNe laser.
* Optics will be cleaned once we receive our new supplies and the laser must be realigned using a HeNe laser.
* A Veeco Helium Leak Detector was used to check for leak sites. The front window has the largest source of Helium at the moment and the o-ring will be replaced shortly. Also, a number of the "spark plugs" that discharge into the laser had noticeable leak rates and I hope to service them shortly.
* A Veeco Helium Leak Detector was used to check for leak sites. The front window has the largest source of Helium at the moment and the o-ring will be replaced shortly. Also, a number of the "spark plugs" that discharge into the laser had noticeable leak rates and I hope to service them shortly.
==Updates for February 2010==
*New o-rings have been purchased to repair both the leaks in the window mounts and the "spark plugs".
*The front window has been cracked and will need replacement.
*A new window has been purchased from [http://www.latticeoptics.com/web/ Lattice Electro Optics] in California. The window has the following specs:
**Material: CaF2 (calcium fluoride)
**Dimensions: 36mm diameter, 5mm thickness
**Scratch-Dig: 20-10
**Surface Flatness: λ/10
**Quantity: 2
*Argon (99.995 % or better) and Fluorine/He (99.9 % or better, mixed in Helium) gas are going to be purchased from Air Gas.
*I have dismantled the portion of the laser which blocks access to the spark plug array. After replacing all 45 o-rings I will contact Dr. Hines again and check my work with the helium leak detector at operating pressure (2200mbar). The pictures below show the laser with the thyratron, MSC, and capacitor array removed.