Fluctuations of STJ-detector signal due to competition of electron and hole tunneling channels

2002 ◽  
Author(s):  
Victor V. Samedov ◽  
V. A. Andrianov
Keyword(s):  
Detector Signal ◽  
Stj Detector

Cryogenic high-resolution X-ray spectrometers for SR-XRF and microanalysis

1998 ◽  
Vol 5 (3) ◽  
pp. 515-517 ◽  
Author(s):  
M. Frank ◽  
C. A. Mears ◽  
S. E. Labov ◽  
L. J. Hiller ◽  
J. B. le Grand ◽  
...  
Keyword(s):  
High Resolution ◽  
Energy Resolution ◽  
Superconducting Tunnel Junction ◽  
Semiconductor Detectors ◽  
X Rays ◽  
X Ray ◽  
Sr Xrf ◽  
Demonstration Experiment ◽  
Near Future ◽  
Stj Detector

Experimental results are presented obtained with a cryogenically cooled high-resolution X-ray spectrometer based on a 141 × 141 µm Nb-Al-Al2O3-Al-Nb superconducting tunnel junction (STJ) detector in an SR-XRF demonstration experiment. STJ detectors can operate at count rates approaching those of semiconductor detectors while still providing a significantly better energy resolution for soft X-rays. By measuring fluorescence X-rays from samples containing transition metals and low-Z elements, an FWHM energy resolution of 6–15 eV for X-rays in the energy range 180–1100 eV has been obtained. The results show that, in the near future, STJ detectors may prove very useful in XRF and microanalysis applications.

scholarly journals Калибровка нейтронных счетчиков токамака Глобус-М2

2022 ◽  
Vol 92 (1) ◽  
pp. 32
Author(s):  
О.М. Скрекель ◽  
Н.Н. Бахарев ◽  
В.И. Варфоломеев ◽  
В.К. Гусев ◽  
М.В. Ильясова ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Equatorial Plane ◽  
Neutron Yield ◽  
Vacuum Chamber ◽  
Calibration Coefficient ◽  
Total Neutron ◽  
Calibration Technique ◽  
Detector Signal ◽  
Experimental Hall

The paper discusses the results of the calibration of two corona neutron counters used to measure the total neutron yield from the plasma of the Globus-M2 tokamak. The calibration was carried out in the experimental hall of the Globus-M2 facility using an AmBe source. During the calibration, the source moved uniformly around the central solenoid in the equatorial plane of the vacuum chamber, and one of the detectors was gradually moved away from the tokamak along a line with a constant toroidal angle. The values of the calibration coefficient obtained depending on the distance of the detector from the tokamak axis are presented. The calibration technique made it possible to separate in the detector signal the contributions from the direct neutron flux emitted by the plasma and from the flux of neutrons scattered on the elements of the experimental hall.

Improving detector signal processing with pulse height analysis in Mössbauer spectrometers

LACAME 2006 ◽  
2008 ◽  
pp. 1-8
Author(s):  
Jiri Pechousek ◽  
Miroslav Mashlan ◽  
Jiri Frydrych ◽  
Dalibor Jancik ◽  
Roman Prochazka
Keyword(s):  
Signal Processing ◽  
Pulse Height ◽  
Detector Signal ◽  
Pulse Height Analysis

Research on detector signal receiving network layout optimization model

2020 ◽  
Vol 13 (4) ◽  
pp. 1284-1296
Author(s):  
Haibo Liang ◽  
Xin Qin ◽  
Jianchong Gao ◽  
Muhammad Junaid Khan
Keyword(s):  
Optimization Model ◽  
Layout Optimization ◽  
Detector Signal ◽  
Network Layout

scholarly journals Superconducting Tunnel Junction Array Development for High-Resolution Energy-Dispersive X-ray Spectroscopy

1998 ◽  
Vol 4 (6) ◽  
pp. 616-621 ◽  
Author(s):  
S. Friedrich ◽  
C.A. Mears ◽  
B. Nideröst ◽  
L.J. Hiller ◽  
M. Frank ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Tunnel Junction ◽  
Count Rate ◽  
Energy Dispersive ◽  
Superconducting Tunnel Junction ◽  
X Rays ◽  
Detector Arrays ◽  
X Ray ◽  
Junction Array ◽  
Stj Detector

Cryogenic energy-dispersive X-ray detectors are being developed because of their superior energy resolution (10 eV FWHM for keV X-rays) compared to that achieved in semiconductor energy-dispersive spectrometry (EDS) systems. So far, their range of application is limited because of their comparably small size and low count rate. We present data on the development of superconducting tunnel junction (STJ) detector arrays to address both of these issues. A single STJ detector has a resolution of around 10 eV below 1 keV and can be operated at count rates of the order 10,000 counts/sec. We show that the simultaneous operation of several STJ detectors does not dimish their energy resolution significantly, and it increases the detector area and the maximum count rate by a factor given by the total number of independent channels.

scholarly journals Detecting ultralight axion dark matter wind with laser interferometers

2016 ◽  
Vol 26 (07) ◽  
pp. 1750063 ◽  
Author(s):  
Arata Aoki ◽  
Jiro Soda
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Modified Gravity ◽  
Laser Interferometer ◽  
Mass Range ◽  
Dark Matter Halo ◽  
Detector Signal ◽  
Modified Gravity Theory ◽  
Axion Field ◽  
Laser Interferometers

The ultralight axion with mass around [Formula: see text][Formula: see text]eV is known as a candidate of dark matter. A peculiar feature of the ultralight axion is oscillating pressure in time, which produces oscillation of gravitational potentials. Since the solar system moves through the dark matter halo at the velocity of about [Formula: see text], there exists axion wind, which looks like scalar gravitational waves for us. Hence, there is a chance to detect ultralight axion dark matter with a wide mass range by using laser interferometer detectors. We calculate the detector signal induced by the oscillating pressure of the ultralight axion field, which would be detected by future laser interferometer experiments. We also argue that the detector signal can be enhanced due to the resonance in modified gravity theory explaining the dark energy.

Improving detector signal processing with pulse height analysis in Mössbauer spectrometers

2007 ◽  
Vol 175 (1-3) ◽  
pp. 1-8 ◽  
Author(s):  
Jiri Pechousek ◽  
Miroslav Mashlan ◽  
Jiri Frydrych ◽  
Dalibor Jancik ◽  
Roman Prochazka
Keyword(s):  
Signal Processing ◽  
Pulse Height ◽  
Detector Signal ◽  
Pulse Height Analysis
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