The HPULB4S1 Ultra-Low-Background Lead Shield is a 10 cm (4 in) high performance copper/tin lined lead shield for high-purity germanium detectors (HPGe). The graded liner is designed for the suppression of lead x-rays and consists of a tin layer of 1 mm (0.040 in.) covered by an oxygen free copper layer of 1.6 mm (0.062 in.).
The top is solid, minimizing any potential shine and providing the best possible shielding. The shield includes a rigid stand with adjustable feet, an Ultra-Low-Background plug, and an adjustable dewar stand to easily lift and lower the dewar in place. The HPULB4S1 exterior and stand is coated with durable epoxy paint while all copper components are coated with a clear polyurethane sealer to prevent corrosion.
All shields are adjusted at the factory and movable doors and lids are positioned with packing material to prevent opening during shipment. All shields require professional installation by qualified riggers that are competent with heavy weight installations. Once installed, the lids should require only minimal adjustment to remove any packing material and assure proper operation.
The HPULB4S1 shield is designed to accommodate ORTEC vertical dipstick cryostat models CFG-PV4, CFG-SV, and CFG-LP-SV.
Compatible with the MOBIUS-PT, MOBIUS-ST, and DWR-30.