نتایج جستجو برای: radiation detector
تعداد نتایج: 291530 فیلتر نتایج به سال:
A modular solid state detector for measuring high energy heavy ion fragmentation near the beam axis.
A multi-element solid state detector has been designed to measure fluences of fragments produced near the beam axis by high energy heavy ion beams in thick targets. The detector is compact and modular, so as to be readily reconfigured according to the range of fragment charges and energies to be measured. Preamplifier gain settings and detector calibrations are adjustable remotely under compute...
A Hadron Blind Detector (HBD) is proposed as upgrade of the PHENIX detector at RHIC, BNL. The HBD will allow the measurement of low-mass ee pairs from the decay of the light vector mesons ρ, ω, φ and the low-mass continuum in Au-Au collisions at energies up to √ sNN= 200 GeV . From MC simulations and general considerations, the HBD has to identify electrons with very high efficiency (> 90%), do...
We present a metamaterial absorber detector array that enables room-temperature, narrow-band detection of gigahertz (GHz) radiation in the S band (2-4 GHz). The system is implemented in a commercial printed circuit board process and we characterize the detector sensitivity and angular dependence. A modified metamaterial absorber geometry allows for each unit cell to act as an isolated detector ...
For the fixed-target heavy-ion experiment CBM at FAIR, a low-mass silicon tracking detector system is being developed that can track at high rates the hundreds of charged particles that will be created when an intense beam of heavy nuclei interacts with the target [1]. The detector is based on silicon microstrip detector technology. Fast self-triggering front-end electronics will be located at ...
Backgrounds and Objectives: Due to importance of ionizing radiation on human health, many studies have been performed to measure the background gamma radiation all around the world as well as some cities in lran. According to this fact that everybody spends almost 80% of his time in indoor areas, this study was carried out to measure the amount of background gamma radiation in indoor areas in Z...
The Vertex Locator of the LHCb experiment is a dedicated subdetector for the reconstruction of primary and secondary vertices in b-hadron decays. The vertex detector features two halves with 21 modules each, mounted on retractable bases. Each module consists of two half-disk silicon micro-strip sensors measuring hits in R and Φ coordinates. The strip pitch ranges from 40 to about 100 μm. A vacu...
Voltage response of a designed and constructed pyroelectric PVDF detector to pulse radiation was experimentally investigated. The detector performance has been tested and its time parameters, response linearity as a function of energy and width of optical pulses, frequency response and temperature characteristics were determined.
By use of coherent terahertz synchrotron radiation, we experimentally tested a holographic Fourier transform spectrometer coupled to an array detector to determine its viability as a spectral device. Somewhat surprisingly, the overall performance strongly depends on the absorptivity of the birefringent lithium tantalate pixels in the array detector.
The discovery of radioactivity was also the birth of the field of radiation measurements. Over the ensuing century, the ability to sense radiation evolved from qualitative observations to precise measurements of its energy, intensity, and location, even as a function of time. The applications that influence the detector R&D have continued to demand more from the detector and analysis systems, a...
A novel device which combines advantages of Silicon Drift Detector and Silicon Avalanche Diode on the same silicon wafer is proposed. Avalanche ampliication is applied to cloud of drifting electrons in order to improve detection of radiation with low energy deposition coeecient. Principle and optimal conditions for the operation of this new detector based on Avalanche Ampliier are discussed.
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