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.
Rugged germanium detectors
• 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.
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.