POLARIZED NEUTRON SPECTROMETER DEVELOPMENT AND EXPERIMENTS AT BROOKHAVEN

Polarized Neutron Spectrometer Development and Experiments at Brookhaven

Recent work at Brookhaven has focussed on the development of polarized neutron spectrometers and reflects the resurgence of interest in polarization analysis. Both Heusler crystals and FeGe multilayers used in conjunction with pyrolytic graphite crystals have been tested as polarizing monochromators on a triple-axis instrument. The goal is to first obtain polarized beams of adequate intensity a...

Experiments with a Slow Neutron Velocity Spectrometer

Neutron bursts were produced by modulation of the arc source of a small cyclotron. Neutrons subsequently slowed down in paraffin were detected by a BF3ionization chamber and linear amplifier. Modulation of an additional amplifier allowed the counting of all detected. neutrons as well as those arriving in a specified time interval. Time of flight experiments were carried out at 3.0 meters with "...

High Precision Thermal Neutron Detectors at Brookhaven National Laboratory

Development of a Neutron POD Spectrometer

Los Alamos National Laboratory has a long history of research, development, test and evaluation, implementation, and installation of radiation detection equipment. The Nuclear Nonproliferation Division has done so in support of domestic and international safeguards, emergency response, nondestructive analysis, and criticality safety. One of the systems that we have developed and deployed for us...

The compact neutron spectrometer at ASDEX Upgrade.

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...