Differential Die-Away Instrument: Report on Neutron Detector Recovery Performance and Proposed Improvements

Technical Report · Mon Sep 22 00:00:00 EDT 2014

DOI:https://doi.org/10.2172/1159063· OSTI ID:1159063

Goodsell, Alison Victoria ^[1]; Swinhoe, Martyn Thomas ^[1]; Henzl, Vladimir ^[1]; Ianakiev, Kiril Dimitrov ^[1]; Iliev, Metodi ^[1]; Rael, Carlos D. ^[1]; Desimone, David J. ^[1]

---

1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Four helium-3 (³He) detector/preamplifier packages (¾”/KM200, DDSI/PDT-A111, DDA/PDT-A111, and DDA/PDT10A) were experimentally tested to determine the deadtime effects at different DT neutron generator output settings. At very high count rates, the ¾”/KM200 package performed best. At high count rates, the ¾”/KM200 and the DDSI/PDT-A111 packages performed very well, with the DDSI/PDT-A111 operating with slightly higher efficiency. All of the packages performed similarly at mid to low count rates. Proposed improvements include using a fast recovery LANL-made dual channel preamplifier, testing smaller diameter ³He tubes, and further investigating quench gases.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1159063
• Report Number(s): LA-UR-14-27369
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
07 ISOTOPE AND RADIATION SOURCES
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DIFFERENTIAL DIE AWAY
HELIUM-3
NEUTRON DETECTORS
DEADTIME
PREAMPLIFIER
DETECTOR/ELECTRONICS PACKAGE
NEUTRON GENERATOR