A prototype multi-element gaseous detector based on THick Gas Electron Multipliers (THGEMs) has been designed and constructed. A THGEM generates a strong electric field within micro-holes of a sub-millimeter thick insulator, which makes electron multiplication possible without the traditional anode wire electrodes encountered in proportional counters. The wireless structure has been chosen to o...

R-134a (C2H2F4) is a low cost, easily available and chlorine free refrigerant, which in its superheated state can be used as an efficient neutron detector. Due to its high solubility in water the R-134a based superheated droplet detectors (SDD) are usually very unstable unless the detector is fabricated using a suitable additive, which stabilizes the detector. The SDD is known to have superheat...

A robust and comprehensive method for determining the orientation matrix of a single-crystal sample using the neutron Laue time-of-flight (TOF) technique is described. The new method enables the measurement of the unit-cell parameters with an uncertainty in the range 0.015-0.06%, depending upon the crystal symmetry and the number of reflections measured. The improved technique also facilitates ...

Within the scope of the R3B experiment at FAIR, a highly efficient time-of-flight spectrometer for high-energy neutrons (200 to 1000 MeV) is developed, called NeuLAND (new Large Area Neutron Detector). The design goals and an overview of the project is given in the contribution of T. Aumann et al. [1]. Here we present the detector concept based on a fully active detector built with only organic...

[1] The cosmic-ray neutron probe measures soil moisture over tens of hectares, thus averaging spatially variable soil moisture fields. A previous paper described how variable soil moisture profiles affect the integrated cosmic-ray neutron signal from which depthaverage soil moisture is computed. Here, we investigate the effect of horizontal heterogeneity on the relationship between neutron coun...

Energy-resolved neutron imaging enables non-destructive analyses of bulk structure and elemental composition, which can be resolved with high spatial resolution at bright pulsed spallation neutron sources due to recent developments and improvements of neutron counting detectors. This technique, suitable for many applications, is demonstrated here with a specific study of ~5-10 mm thick natural ...