Abstract: For use as a substitute for liquid nitrogen cooled energy dispersive x-ray detection in spectrometry, the present invention comprises a cooper cold-finger having a lithium-drifted silicon detector and FET at one end, and a five-stage Peltier cooling stack thermally connected to the fifth stage through copper braid at the other end, an aluminum heat shield surrounding the cold-finger and thermally connected to the fourth stage of the Peltier cooling stack with a copper braid, a plurality of nylon spiders that support the cold finger within the heat shield and isolate them thermally, a stainless steel cap, a plurality of nylon spiders that support the heat shield within the cap and thermally isolates them, a heat sink in thermal communication with the hot end of the cooling stack, a remote water cooling system piped to the heat sink and mechanically isolated from vibrating the silicon detector, an ion pump to create a high-quality vacuum around the silicon detector, a motor drive to adjust the reach of the sili