HPGe Detector Add-on Options

The SMART-1 option monitors and reports on vital system functions, and can save authentication codes and report the code at a later time. It has the high voltage included, so none of the instruments require an external high-voltage power supply. The SMART-1 is housed in a rugged ABS molded plastic enclosure and is permanently attached to the detector endcap via a molded-strain-relieved sealed cable. This eliminates the possibility that the detector will suffer severe damage from moisture leaking into high-voltage connectors. The SMART-1 can be positioned in any convenient place and does not interfere with shielding or other mounting hardware. 

Compatible Detector Types for -SMP: GEM, PROFILE, Safeguards GEM, Actinide-85 Compatible Detector Types for -SMN: GMX, GLP, Safeguards GLP

The Ultra-High Count-Rate Preamplifier (transistor-reset preamplifier) can handle input count rates up to 1,000,000 counts/s at 1 MeV and offers the added benefit of having no feedback resistor. 

Compatible Detector Types: GEM, PROFILE, GMX

This option allows all the preamplifier and high voltage connections to be outside a shield and removes the preamplifier and high voltage filter from the “line-of-sight” to the Ge crystal. For low background applications, this option eliminates any possible preamplifier or high voltage filter components that may add to the background inside a shield. 

Compatible Detector Types: GEM, PROFILE, GMX, GWL

The Low-Background Carbon Fiber Endcap is as strong as Al, Mg, and Cu, creates less background, does not corrode, and can detect energies less than 10 keV. This lower background material allows for lower Minimum Detectable Activity (MDA) for a specific counting time, which provides another step in increasing sample throughput in low-background counting applications. The lower Z of Carbon Fiber provides a low-energy window without the additional background found in most alloys. 

Compatible Detector Types: GEM, PROFILE, GMX

An all aluminum endcap can be chosen if the energies of interest exceed 20 keV. 

Compatible Detector Types: GMX

Low-background Well detectors are supplied with oxygen-free high conductivity (OFHC) copper endcaps with low-background high purity aluminum well tubes of 0.02 inch wall thickness. 

Compatible Detector Types: GWL