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<p class="MsoNormal">Greetings Labnetters,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We’re in the process of tweaking our wet ox process. Hardware changes provided an opportunity to consider
<o:p></o:p></p>
<p class="MsoNormal">alternatives to our current internal “candy cane” torch arrangement employed in several tubes. Currently running 6” silicon<o:p></o:p></p>
<p class="MsoNormal">in 205/211mm quartz w/candy cane torch. This doesn’t give us the luxury of a simple visual inspection without pulling the tube.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">A straight coaxial torch is being qualified now, and it’s presenting some challenges. Growth rates are lower than predicted and
<o:p></o:p></p>
<p class="MsoNormal">across boat uniform is >6%. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Polling the audience: what are your preferences – cane v straight?; straight torch design details/vendors?; gas flows?<o:p></o:p></p>
<p class="MsoNormal">There’s a lot of knobs to turn – at 2/runs per day it’s slow to fine tune.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We do have an MRL external torch that served us well for lower temp processes. Space and budget precludes using it in<o:p></o:p></p>
<p class="MsoNormal">multiple tubes.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Appreciate any feedback, tips or outright opinions.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Scott P. Blondell<o:p></o:p></p>
<p class="MsoNormal">Fac. Mgr.<o:p></o:p></p>
<p class="MsoNormal">RIT SMFL<o:p></o:p></p>
<p class="MsoNormal">315.738.4073<o:p></o:p></p>
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