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Detailed introductionIntegrated cryogenic cooling system option（-ICS、-ICS-E）
Integrated cryogenic cooling system (ICS) cryostats are equipped with cryogenic coolers and are not affected by non-regenerative cycles. Unlike the typical three days of loss with standard cryostat detectors, the ICS can be immediately re-cooled, minimizing any time lost to rewarming. ICS can be equipped with internal preamplifier (-ICS) or external preamplifier (-ICS-E).
Compatible detector types for -ICS: GEM
Compatible detector types for -ICS-E: GEM, PROFILE, GMX
Integrated cryogenic cooling low background system（-ICS-LB）
The low-background detector features a built-in preamplifier, high-purity aluminum end caps, high-purity aluminum windows, high-purity aluminum inner cup, and low-background copper mounts for the ICS integrated cryogenic cooling system. Lower background materials reduce the minimum detectable activity (MDA) within a specific counting time, providing another way to increase sample throughput in low-background applications.
Compatible detector types: GEM
SMART-1 option (-SMP、-SMN)
The SMART-1 option is used to monitor and report on important system functions, as well as save verification codes and report them later. It includes high voltage, so all instruments require no external high voltage power supply. The SMART-1 features a rugged ABS molded plastic housing with molded strain-relief sealed cables securely attached to the detector end cap. This prevents the detector from being seriously damaged by water leaking into the high voltage connector. The SMART-1 can be placed anywhere convenient for use without interfering with shielding or other mounting hardware.
Compatible detector types for -SMP: GEM, PROFILE, Security GEM, Actinide-85
Compatible detector types for -SMN: GMX, GLP, Safeguard GLP
Ultra-high count rate preamplifier option（-PL）
super highCount rate preamplifier (transistor reset preamplifier)Can handle input count rates up to 1,000,000 counts/second at 1 MeV and has the added advantage of no feedback resistors. Compatible detector types: GEM, PROFILE, GMX
Harsh environment options（-HE）
The harsh environment option is a rugged carbon fiber end cap with a sealed electronics housing and a replaceable desiccant pack to ensure the electronics remain 100% dry and indicate when the desiccant pack needs to be replaced. GEM Series detectors in 76 mm diameter or larger PopTop package designs are available with this option.
Compatible detector types: GEM, PROFILE, GMX
Remote preamp option（-HJ）
This option places all preamplifier and high voltage connections outside the shield and moves the preamplifier and high voltage filter out of the Ge crystal's "sight". For low-floor applications, this option eliminates any possible preamplifier or high-voltage filter components that could add to the shield's internal floor.
Compatible detector types: GEM, PROFILE, GMX, GWL
Low background carbon fiber end cap option(-RB, -LB-C and -XLB-C)
Low-background carbon fiber end caps are as strong as Al, Mg and Cu, produce low background, do not corrode, and can detect energies below 10 keV. This lower background material reduces the minimum detectable activity (MDA) during a specific counting time, which provides another way to increase sample throughput in low background counting applications. The lower Z of carbon fiber provides a low energy window without creating the additional background found in most alloys.
Compatible detector types: GEM, PROFILE, GMX
Beryllium window options（-B）
Improved performance between 3 and 5 keV.
Compatible detector types: PROFILE
Aluminum window options（-A）
If the energies of interest exceed 20 keV, all-aluminum end caps are available.
Compatible detector types: GMX
Carbon fiber window options（-CW）
Carbon fiber windows are available for energies greater than approximately 8 keV. While this window does not pass all lower energies, carbon fiber has a lower Z than Al and does not present any hazards associated with Be.
Compatible detector types: GMX
low background well(-LB-AWT and -XLB-AWT)
Low-background well detectors feature oxygen-free high conductivity (OFHC) copper end caps with low-background, high-purity aluminum well tubes with 0.02-inch wall thickness.
Compatible detector types: GWL
