Portable fast-neutron spectrometer project

Technical Report · Fri Dec 01 04:00:00 EST 1989

OSTI ID:5033854

Thorngate, J H

The Special Projects Division of the Hazards Control Department of Lawrence Livermore National Laboratory has a continuing project to develop neutron spectrometers for radiation-protection measurements. For the last three years we have received limited support from the DOE Personnel Neutron Dosimeter Evaluation and Upgrade Program through Battelle Pacific Northwest Laboratories to build a portable fast-neutron spectrometer. This unit will cover the energy range from 0.5 to 16 MeV by using an organic liquid scintillator to detect the recoil proton produced by the neutrons. Our goal is to make the system compact, computer operated, and battery powered. During the previous two years we developed a pulse-shape discriminator suitable for portable powered. This year we designed a stable light pulser to control the gain of the system, a housing for the detector, and the circuit needed to bias the dynodes of the photomultiplier that detects the light produced by the scintillator. 14 refs., 4 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5033854
• Report Number(s): UCID-21776; ON: DE90005750
• Country of Publication: United States
• Language: English

Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COSMIC RADIO SOURCES
DESIGN
DETECTION
DOCUMENT TYPES
DOSIMETRY
ELECTRONIC CIRCUITS
EQUIPMENT
GAMMA SPECTRA
LIGHT EMITTING DIODES
MEASURING INSTRUMENTS
NEUTRON DOSIMETRY
NEUTRON SPECTROMETERS
PERFORMANCE TESTING
PHOTODIODES
PHOTOMULTIPLIERS
PHOTOTUBES
PORTABLE EQUIPMENT
PROGRESS REPORT
PULSARS
RADIATION DETECTION
RADIATION PROTECTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SPECTRA
SPECTROMETERS
TESTING