Germanium Detector New

GE The Germanium Spectrometer

Germanium spectrometers are the highest resolution gamma-ray detectors in existence, and they are used extensively for both basic research and applied physics. The energy of gamma or beta rays can be measured with typical resolutions of 0.1%. The goal of this experiment is to calibrate a germanium detector and to do one of several experiments.

New Generation of Dark Matter Experiments Gear Up to ...

New Generation of Dark Matter Experiments Gear Up to Search for Elusive Particle Deep underground, in abandoned gold and nickel mines, vats of liquid xenon and silicon germanium crystals will be ...

Semiconductor Detector Materials: LYSO crystals, CZT, BGO ...

Semiconductor detectors are represented by ultra-pure (13N) germanium and cadmium zinc tellurium, while the scintillating crystals are represented by bismuth germanate and yttrium lutetium silicate. Scintillating Crystals such as LYSO and BGO are materials that exhibit scintillation, the property of luminescence, when excited by ionizing radiation.

High Purity Germanium Detectors - HPGe

HPGe detector with LN2 cryostat Source: canberra.com. High-purity germanium detectors (HPGe detectors) are the best solution for precise gamma and x-ray spectroscopy.In comparison to silicon detectors, germanium is much more efficient than silicon for radiation detection due to its atomic number being much higher than silicon and due to lower average energy necessary to create an …

Semiconductor detector - Wikipedia

Germanium Detectors Germanium Short Form Catalog in PDF Format J16 Series detectors are high-quality Germanium photodiodes designed for the 800 to 1800nm wavelength range. For applications where temperature stability of response is important near the cutoff, thermoelectrically cooled detectors …

An evaluation of germanium detectors employed for the ...

The 80 x 20 mm detector arrays were then benchmarked against a standard array of four 70-mm-diameter by 20-mm-thick (70 x 20 mm) broad energy germanium detectors. Since testing new …

High Purity Germanium Detector Calibration at ISOLDE

High Purity Germanium Detector Calibration at ISOLDE Guðmundur Kári Stefánsson Summer Student of Maria Borge September 5, 2013 Abstract: This Summer Student Project involved the test and calibration of two High Purity Coaxial Germanium gamma-ray detectors; Canberra models GC7020 (old, from 1990), and GX6020 (new…

Photodiodes - Thorlabs

May 27, 2020· Thorlabs stocks a wide selection of photodiodes (PD) with various active area sizes and packages. Discrete PIN junction photodiodes include indium gallium arsenide (InGaAs), gallium phosphide (GaP), and silicon (Si) materials. Germanium (Ge) photodiodes, which are based on an&nbs

Development of an array of HPGe detectors with 980% ...

high-purity germanium (HPGe) array detector named the CAGe (CUP Array of Germanium) that is intended for screening detector materials for trace levels of radioactivity [1,2,3,4] and for directly performing new …

USD's Wenqin Xu Receives Grant for Germanium Detector ...

The germanium detector will have the ability to indirectly investigate properties of neutrinos that often pass through detectors without any interactions. Xu's research will help improve germanium and liquid argon detectors for future research to be conducted. ... The partnership will help advance the understanding of the world through new ...

The Search for Double Beta Decay With Germanium Detectors ...

2. The Germanium Detector and Double-Beta Decay. Germanium detectors have been the mainstay of nuclear spectroscopy and related fields for more than a half a century. They replaced NaI(Tl) scintillation detectors …

High Purity Germanium: From Gamma-Ray Detection to Dark ...

Sep 06, 2018· High purity germanium remains the material of choice for the detection of photons in the range of MeV or higher, down to the hard X-ray range. Since the operation of HPGe-based detectors …

Radiation measurement - Silicon detectors | Britannica

Semiconductor detectors also can be used in gamma-ray spectroscopy. In this case, however, it is advantageous to choose germanium rather than silicon as the detector material. With an atomic number of 32, germanium …

Advances in germanium detector technology | Request PDF

Nowadays, germanium detectors have a relative efficiency of up to 200% (Sangsingkeow et al., 2003), with approximately 6.7 times higher counting efficiency (A) than that of the germanium detector ...

Germanium Detectors - Mirion Technologies, Inc.

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.

Note HPGe detector single element - Canberra Industries

Unmatched energy resolutions of Germanium at high count rate The design of our count rate x-ray HPGe detectors have recently hugely improved thanks to new preamplifiers designs, new contacting methods and overall cryostat improvement. Fig.4 - Example of spectrum recorded with a Fe55 source at 550kcps at the detector, with a Canberra

GSI - Detector development

Dec 05, 2011· Because for high-Z ions and fast collisions, electron–ion recombination in general produces strongly polarized X-rays in the energy regime between 50 and 500 keV, the polarization sensitivity of two-dimensional germanium detectors via the Compton effect provides an important key to reveal the physics of these processes.

Best Choice of High Purity Germanium (HPGe) Detector

type detectors are now available with the conventional 600 µm P-type contact and a new proprietary thin contact equivalent to about 10 µm of inactive Ge.These are known as the PROFILE GEM F and PROFILE GEM FX series respectively. ORTEC® The Best Choice of High Purity Germanium (HPGe) Detector Figure 1. P-type HPGe crystal geometries. Figure 2.

New detector breakthrough pushes boundaries of quantum ...

Sep 30, 2020· Physicists at Aalto University and VTT Technical Research Center of Finland have developed a new detector for measuring energy quanta at unprecedented resolution. This discovery could help bring ...

GERDA: The Germanium Detector Array - YouTube

Nov 25, 2010· Next to photons, neutrinos are the most abundant particles in the universe. Still, they are almost invisible to us since they interact with matter extremely ...

The processing of enriched germanium for the Majorana ...

Jan 01, 2018· The Majorana Demonstrator is an array of point-contact Ge detectors fabricated from Ge isotopically enriched to 88% in 76 Ge to search for neutrinoless double beta decay. The processing of Ge for germanium detectors is a well-known technology. However, because of the high cost of Ge enriched in 76 Ge special procedures were required to maximize the yield of detector …

Chapter 8 Hyper-Pure Germanium Detector

germanium detector for a long time. Although there is little difference in detector performance between HPGe and Ge(Li), the maintenance of Ge(Li) is pretty inconvenient, which has made manufacturers stop producing them. 8.2. Configurations A. Hyper-Pure Germanium (HPGe) detector fabrication [4] HPGe crystal were first developed in the mid 1970s.

1N34A Germanium Detector Diode | MPJA.COM

Review the datasheets- the 1N34 is specified at a fairly high forward current. The actual operating current for RF detectors is orders of magnitude smaller. This part is very likely a 1N34A as advertised. Durbin : 1N34A Detector Diode: This is not a Germanium …

High Purity Germanium Detector Calibration at ISOLDE

High Purity Germanium Detector Calibration at ISOLDE Guðmundur Kári Stefánsson Summer Student of Maria Borge September 5, 2013 Abstract: This Summer Student Project involved the test and calibration of two High Purity Coaxial Germanium gamma-ray detectors; Canberra models GC7020 (old, from 1990), and GX6020 (new, from

GERDA Home Page

The GERDA experiment has been proposed in 2004 as a new 76 Ge double-beta decay experiment at LNGS. The GERDA installation is a facility with germanium detectors made out of isotopically enriched material. The detectors are operated inside a liquid argon shield. The experiment is …

InGaAs vs Ge IR Detectors - Newport

There comes the difference between Germanium and Indium Gallium Arsenide. The shunt resistance of an InGaAs detector is on the order of 10 MΩ, while that of a Ge detector is on the order of kΩ, several orders of magnitude smaller. Thus, a Ge detector will exhibit a much higher level of thermally induced noise than an InGaAs detector.

Standard High Purity Germanium Detectors

The conventional coaxial germanium detector is often referred to as Pure Ge, HPGe, Intrinsic Ge, or Hyperpure Ge. Regardless of the superlative used, the detector is basically a cylinder of germanium with an n-type contact on the outer surface, and a p-type contact on the surface of an axial well.

The processing of enriched germanium for the Majorana ...

Jan 01, 2018· The Majorana Demonstrator is an array of point-contact Ge detectors fabricated from Ge isotopically enriched to 88% in 76 Ge to search for neutrinoless double beta decay. The processing of Ge for germanium detectors is a well-known technology. However, because of the high cost of Ge enriched in 76 Ge special procedures were required to maximize the yield of detector mass and to minimize ...

GERDA: The Germanium Detector Array - YouTube

Next to photons, neutrinos are the most abundant particles in the universe. Still, they are almost invisible to us since they interact with matter extremely ...

High Purity Germanium (HPGe) Detectors - CAEN SyS

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. Charge carriers, produced by the interaction of X and gamma rays in the intrinsic region, are swept by the electric field to the P and N electrodes where are collected.

Chapter 1 Infrared Detector Characterization

available for germanium at an earlier date, the first high-performance extrin-sic detectors were based on Ge:Hg with activation energy for the Hg acceptor of 0.089 eV. Extrinsic photoconductive response from copper, zinc, and gold impurity levels in germanium gave rise to devices using the 8- to 14-mm long

Fabrication Process Development for High- Purity Germanium ...

contacts have great potential to facilitate new HPGe detector designs by providing a thin, high-resistivity surface coating that is the basis for electrical contacts that block both electrons and holes and can easily be finely segmented. Additionally, amorphous semiconductor coatings form ... Illustration of a planar germanium detector ...

GIOVE: a new detector setup for high sensitivity germanium ...

1.1 Low-level germanium spectroscopy Low-level γ spectroscopy with germanium (Ge) detectors has become an essential tool for material screening in rare event physics experiments. These demand lowest possi-ble radioactivity concentrations near their target or detector array [1,2]. Typical examples are searches for solar neutri-

Germanium Detector Array - Wikipedia

The Germanium Detector Array (or GERDA) experiment is searching for neutrinoless double beta decay (0νββ) in Ge-76 at the underground Laboratori Nazionali del Gran Sasso (LNGS). Neutrinoless beta decay is expected to be a very rare process if it occurs. The collaboration predicts less than one event each year per kilogram of material, appearing as a narrow spike around the 0νββ Q-value ...