Added lots of stuff

LED_to_fiber/ADAFCB1-Step.step

LED_to_fiber/LED_to_fiber.FCStd

LHe_scnw/LHe_holder.FCStd

LHe_scnw/LHe_holder.FCStd1

NMR_pickup_coil/NMR_pickup_v0.FCStd

NMR_pickup_coil/NMR_pickup_v0.FCStd1

NMR_pickup_coil/NMR_pickup_v1.FCStd

NMR_pickup_coil/NMR_pickup_v1.FCStd1

NMR_pickup_coil/drawings/NMR_pickup_coil_v0.pdf

NMR_pickup_coil/drawings/NMR_pickup_coil_v1.pdf

...older/47065T239_ALUMINUM T-SLOTTED FRAMING EXTRUSION.STEP

...holder/5537T441_ALUMINUM T-SLOTTED FRAMING EXTRUSION.STEP

PMT_holder/PMT_holder2.fcstd

PMT_holder/PMT_holder2.fcstd1

PMT_holder/PMT_holder_2.stl

PMT_holder/PMT_holder_v3.stl

SEOP_cell/SEOP_v0.FCStd

SEOP_cell/SEOP_v0.FCStd1

SEOP_cell/SEOP_v1.FCStd

SEOP_cell/SEOP_v1.FCStd1