Detector development for the abBA experiment

Journal Article · Fri Jul 01 00:00:00 EDT 2005 · Journal of Research of the National Institute of Standards and Technology

DOI:https://doi.org/10.6028/jres.110.065· OSTI ID:1628766

Seo, P. N. ^[1]; Bowman, J. D. ^[2]; Mitchell, G. S. ^[2]; Penttila, S. I. ^[2]; Wilburn, W. S. ^[2]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); DOE/OSTI
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

We have developed a new type of fieldexpansion spectrometer to measure the neutron beta decay correlations (a, b, B, and A). A precision measurement of these correlations places stringent requirements on charged particle detectors. The design employs large area segmented silicon detectors to detect both protons and electrons in coincidence. Other requirements include good energy resolution (< 5 keV), a thin dead layer to allow observation of 30-keV protons, fast timing resolution (~1 ns) to reconstruct electron-backscattering events, and nearly unity efficiency. We report results of testing commercially available surface-barrier silicon detectors for energy resolution and timing performance, and measurement of the dead-layer thickness of ion-implanted silicon detectors with a 3.2 MeV alpha source.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1628766
• Journal Information: Journal of Research of the National Institute of Standards and Technology, Journal Name: Journal of Research of the National Institute of Standards and Technology Journal Issue: 4 Vol. 110; ISSN 1044-677X
• Publisher: National Institute of Standards (NIST)
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Instruments &amp; Instrumentation
Physics
dead layer
electron backscattering event
neutron beta decay
silicon detector