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Booster Bias Supply Upgrade . April 2, 2014. First prototype was started in December The back half of the supply was totally gutted T ransformer Interphase reactor SCR/heat sink assemblies All water hoses Relocated various chassis and supplies A few need re-wiring
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Booster Bias Supply Upgrade April 2, 2014
First prototype was started in December • The back half of the supply was totally gutted • Transformer • Interphase reactor • SCR/heat sink assemblies • All water hoses • Relocated various chassis and supplies • A few need re-wiring • Assembled as much as possible to finalize layout • Huge relief when it was verified that everything was going to fit without a major overhaul
Slow going on first supply • Not worked on full time • Many delays with materials and parts • Many discussions and decisions on final layout • High priority on ease of future maintenance • Second gutting for final hole drilling, documenting and installation of plated parts. • Made “doubles” of many parts
Now have two techs from EE Support (80%) • High current copper bus bars • Need 10 of these which are very labor intensive • Flexible copper straps • Need 120 of these • Fairly tedious to assemble, solder and drill • SCR/heat sink assemblies • Need 20 of these
Next bias supply rehab: Much faster! • Layout is finalized and documented. • Have 80% of parts and material on hand • Few more in-house machine shop jobs • Off-the-shelf electrical parts • EE Support techs working on labor intensive assemblies • ~2 month turn-around on next supply • Training full-time worker • Ordering remaining parts • Remaining supplies have solid wall separating front and back, possibly creating a few problems • ~1 month turn-around thereafter