Germaniumdetektorer HPGe

HPGe Germanium detectors are semiconductor diodes having a p-i-n structure in which the intrinsic (I) region is sensitive to ionizing radiation, particularly x rays and gamma rays. Under reverse bias, an electric field extends across the intrinsic or depleted region. When photons interact with the material within the depleted volume of a detector, charge carriers (holes and electrons) are produced and are swept by the electric field to the P and N electrodes. This charge, which is in proportion to the energy deposited in the detector by the incoming photon, is converted into a voltage pulse by an integral charge sensitive preamplifier.

Standard Electrode Coaxial Ge Detectors (SEGe)

Broad Energy Germanium Detectors (BEGe)



Reverse Electrode Coaxial Ge Detectors (REGe)



Extended Range Coaxial Ge Detectors (XtRa)

Small Anode Germanium Well Detectors (SAGe Well)

Traditional Germanium Well Detectors

Low Energy Germanium Detectors (LEGe)

Ultra-LEGe Detectors (GUL)

Rugged germanium detectors

Features are:

• Hardened design, shock and vibration resistant
• Adapted cooling devices (electrical fanless coolers)
• Multiple references in space missions (Integral, Mars Orbiter, Selene. . . )
• Encapsulation techniques allowing easy exchange of each individual detector when mounted in arrays or partial heat cycling.

ACT-LC - HPGe Detector for Actinide Lung and Whole Body Counters

Germanium Array Detectors

Intelligent Cryo-Cycle Hybrid Cooling

The Mirion Intelligent Cryo-Cycle Cryostat is the latest enhancement of the “hybrid” cryostat combining the advantages of electric cooling with the reliability of liquid nitrogen. The cryocooler is used to condense the boil-off N2 gas back into the 25-liter Dewar.

CRYO-PULSE 5 Plus - Electrically Refrigerated Cryostat

The Cryo-Pulse 5 Plus unit is an electrically powered cryostat for use with HPGe radiation detectors. It utilizes a pulse tube cooler, a highly reliable technology originally used in military and space applications and which has proven its value for germanium detectors in the original Cryo-Pulse 5 cryostat.