(Randy Thompson, Corey Gray)

In preparation for the upcoming Bigger BeamSplitter Suspension (BBSS) Installation at BSC2 in a few weeks (~midMarch), a new type of cleanroom infrastructure was needed too allow for more vertical space for the cartridge to be craned in/out of BSC2.  Instead of using our standard large mobile cleanroom (which are used for HAM & BSC chamber work), a smaller clean space will be attached to the elevated work platform for BSC2.  There will be a "cleanroom tent" on this platform (here's the platform [white] with 2-sets of 4 "tent poles") and a new array of (qty-4) HEPA Filters Fans (same type as the ones on top of the large mobile cleanrooms which blow down) will be on the side of this cleanroom tent to push air flow horizontally for this elevated workspace for the BBSS install.

Randy designed a unistrut framework for this 4-HEPA fan Array (weighs 377lbs).  This morning this assembly was carefully craned into place on top of 3 unistrut brackets attached to the BSC work platform (in between BSC1 & BSC2).  For added support, this afternoon, Randy added a "leg support" on both ends of this HEPA Filter Fan Array (here is a photo of one of these legs that is in the Beer Garden).