نتایج جستجو برای: neutron detector
تعداد نتایج: 103020 فیلتر نتایج به سال:
AS potentially hazardous neutron radiation producing devices become mure preva lest I there is a corresponding proliferation of monitoring equipment, and a concomitant need to calPbr3ie that equipment. Neutron sources are available for calibration purposes, but elaborate calibration facilities usui~lfy are not. Instead, most neutron detector calibration is performed by placing both source and d...
The n_TOF Collaboration has built and commissioned a high-performance detector for ðn;gÞ measurements called the Total Absorption Calorimeter (TAC). The TAC was especially designed for measuring neutron capture cross-sections of low-mass and/or radioactive samples with the accuracy required for nuclear technology and stellar nucleosynthesis. We present a detailed description of the TAC and disc...
The Cold Neutron Depth Profiling (CNDP) instrument at the NIST Cold Neutron Research Facility (CNRF) is now operational. The neutron beam originates from a 16 L D2O ice cold source and passes through a filter of 135 mm of single crystal sapphire. The neutron energy spectrum may be described by a 65 K Maxwellian distribution. The sample chamber configuration allows for remote controlled scanning...
A compact neutron spectrometer, based on a CH foil for the production of recoil protons and CR-39 detection, is being developed for the measurements of the DD-neutron spectrum at the NIF, OMEGA, and Z facilities. As a CR-39 detector will be used in the spectrometer, the principal sources of background are neutron-induced tracks and intrinsic tracks (defects in the CR-39). To reject the backgrou...
This paper reports the design, making and characterisation of a series of Fe-based bulk metallic glass alloys with the aim of achieving the combined properties of high neutron absorption capability and sufficient glass forming ability. Synchrotron X-ray diffraction and pair distribution function methods were used to characterise the crystalline or amorphous states of the samples. Neutron transm...
In this paper, a hand-held neutron radiation sensor application is described. The sensor system utilizes a new class of boron-carbide diode that interacts with incoming neutrons. To interface with the boron-carbide diode an integrated front-end is designed in a 1.5/spl mu/m standard CMOS technology. With the diode and front-end microchip, a hand-held neutron detection system was realized with a...
The potential of Silicon Carbide (SiC) for use in semiconductor nuclear radiation detectors has been long recognized. In fact, the first SiC neutron detector was demonstrated more than fifty years ago (Babcock, et al., 1957; Babcock & Chang, 1963). This detector was shown to be operational in limited testing at temperatures up to 700 oC. Unfortunately, further development was limited by the poo...
The primary secondary particles from the spallation target of China Spallation Neutron Source are mainly gammas and neutrons, which related to distribution incident proton. reconstruction proton beam spot could be implemented based on particles. methods pinhole imaging Compton developed by measuring gamma pixelated detector. detected detector directly. neutron can identified detecting character...
This document describes the Cherenkov detector that is to be constructed for the Hall A neutron d2 experiment (E06-014). The inclusive nature of that experiment makes the addition of the Cerenkov counter for pion and proton rejection critical for the low energy bins. Monte Carlo and analysis of G E suggest particle rates of (assuming a 500MeV ee threshold on the the BigBite shower detector): • ...
NeuLAND (New Large-Area Neutron Detector) is the next-generation neutron detector for R3B (Reactions with Relativistic Radioactive Beams) experiment at FAIR (Facility Antiproton and Ion Research). detects neutrons energies from 100 to 1000 MeV, featuring a high detection efficiency, spatial time resolution, large multi-neutron reconstruction efficiency. This achieved by highly granular design o...
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