The first neutron spectrometer of ASDEX Upgrade (AUG) was installed in November 2008. It is a compact neutron spectrometer (CNS) based on a BC501A liquid scintillating detector, which can simultaneously measure 2.45-MeV and 14-MeV neutrons emitted from deuterium (D) plasmas and γ radiation. The scintillating detector is coupled to a digital pulse shape discrimination data acquisition (DPSD) sys...

Fusion reactions from direct-drive inertial confinement fusion experiments at the Laboratory for Laser Energetics (LLE) release large amounts of stored nuclear energy. Most of it is given off as energetic neutrons. Plastic scintillators are used as detectors for these neutrons. The neutrons that interact with the scintillator produce photons that are recorded using a photomultiplier tube on a f...

A low-background neutron detector array was developed to measure the cross section of $$^{13}$$ C( $$\alpha$$ ,n) $$^{16}$$ O reaction, which is source for s-process in AGB stars, Gamow window ( $$E_\text {c.m.}$$ = 190 ± 40 keV) at China Jinping Underground Laboratory (CJPL). The consists 24 $$^{3}$$ He proportional counters embedded a polyethylene cube. Owing deep underground location and bor...

Beta decay of the neutron into a proton, electron, and electron antineutrino is occasionally accompanied by the emission of a photon. Despite decades of detailed experimental studies of neutron beta-decay, this rare branch of a fundamental weak decay has never been observed. An experiment to study the radiative beta-decay of the neutron is currently being developed for the NG-6 fundamental phys...

Experimental and Theoretical Studies of a Gadolinium-Water Neutron Detector for Cosmogenic Neutron Flux Measurements by Robert K. Lanza, Jr. Bachelors of Science in Physics University of California, Santa Barbara Harry N. Nelson, Advisor This work describes experimental and theoretical aspects of calibrations performed on a gadolinium/water neutron detector designed to measure the cosmogenic ne...

Measurements of neutron-deuteron (n-d) analyzing power Ay(θ ) at En = 19.0 MeV are reported at 16 angles from θc.m. = 46.7 to 152.0◦. The objective of the experiment is to better characterize the discrepancies betweenn-d data and the predictions of three-nucleon calculations for neutron energies above 16.0 MeV. The experiment used a shielded neutron source, which produced polarized neutrons via...