학술논문
A multi-anode photomultiplier tube based wavelength-shifting-fiber detector for neutron diffraction
Document Type
Conference
Author
Source
2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC) Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE. :180-184 Oct, 2012
Subject
Language
ISSN
1082-3654
Abstract
Wavelength-shifting (WLS) fiber scintillator neutron detectors were developed for two time-of-flight (TOF) neutron powder diffractometers (POWGEN, VULCAN) at Spallation Neutron Source (SNS). In a recent module (v3.0), however, there are 32 1-inch-diameter photomultiplier tubes (PMTs), which are bulky and expensive. We built a new detector module (v3.1) based on four multi-anode (MA) PMTs, and tested its performance including detection efficiency, count rate capability, spatial resolution, ghosting properties, and gamma-ray sensitivity. The v3.1 module was compared with two prior v3.0 modules, and 3 He tube detectors.