Description
The U.S. Geological Survey (USGS) is conducting market research to determine the availability of qualified businesses capable of providing an in-house gamma-counting system. The system must include a high-purity low-background germanium (HPGe) well detector, a low-background J-type cryostat, a cryogenic liquid nitrogen recycler, a low-background lead shield, and a standalone digital multi-channel analyzer (MCA) signal processing gamma spectrometer. The system must also include software packages for gamma spectroscopy sample management, data entry, calibration, quality assurance/control, reporting, data management, and export. The vendor will be responsible for on-site installation, system configuration, software setup, quality assurance testing, and user training.
Key features of the system include:
• High-purity low-background germanium (HPGe) well detector with a well tube diameter of 15.5 to 16 mm and a well tube depth of at least 40 mm
• Low-background J-type cryostat with remote preamplifier
• Cryogenic liquid nitrogen recycler with a 25-liter capacity
• Low-background lead shield with 4-inch-thick walls and a graded tin and copper interior liner
• Standalone digital multi-channel analyzer (MCA) signal processing gamma spectrometer
• Software packages for gamma spectroscopy sample management, data entry, calibration, quality assurance/control, reporting, data management, and export