Low Background

Detector Systems
Manufactured by: The Spectroscopy Divison
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Low Background

Detector Systems
Manufactured by: The Spectroscopy Division
Favorite this Product

The term "low background" is used fairly indiscriminately in describing gamma analysis systems. The one common denominator for such systems is some form of shielding, but beyond this, anything goes. 

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Description

The term "low background" is used fairly indiscriminately in describing gamma analysis systems. The one common denominator for such systems is some form of shielding, but beyond this, anything goes. To bring some order to our own product line and to help customers distinguish the classes of systems, Mirion has chosen to categorize low-background gamma analysis systems as follows:

Low-Background 

Ge detectors in a variety of cryostat types with lead shielding of 2-4 inch (5-10 cm) thickness. The only cryostats specifically excluded from this class are modular (convertible) types in which the molecular sieve adsorber is necessarily located near the detector element. 

Ultra Low-Background

Ge detectors in cryostats that are A: designed for shielding effectiveness and B: constructed from materials that are notably low in background. The complementary lead shields are also made from select, low-background materials and are at least 4-6 inches (10-15 cm) thick. Mirion uses the term Ultra Low-Background to describe standardized detectors and shields which are described in the following pages. These standard products offer performance normally associated with much more expensive custom systems. 

Specialty Ultra Low-Background 

Systems in this class are designed for the specific application at hand. This type of system usually involves user specified design and/or performance criteria and close collaboration between the user and Mirion throughout the project - from inception to installation. 

It is this class of system where active shielding (cosmic guards or Compton suppression) is often used. Mirion has a wealth of experience in building such systems and we welcome your inquiries should standard Low Background or Ultra Low-Background systems not satisfy your needs. 

 

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