Published February 1, 2011 | Version v1
Journal article Metadata-only

Three-dimensional drift chambers of the DCBA experiment for neutrinoless double beta decay search

Creators

  • 1. Tokyo Metropolitan University, Hachioji, Tokyo 192-0398 (Japan)
  • 2. High Energy Accel, Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)
  • 3. Shizuoka University, Naka, Hamamatsu, Shizuoka 432-8011 (Japan)
  • 4. Nihon Institute of Medical Science, Iruma-gun, Saitama 350-0435 (Japan)
  • 5. Osaka City University, Sumiyoshi, Osaka 558-8585 (Japan)
  • 6. Okayama University, Okayama 700-8530 (Japan)

Description

The aim of the DCBA (Drift Chamber Beta-ray Analyzer) experiment is to search for neutrinoless double beta decay (0νββ). The half-life of 0νββ is expected to give us the information of Majorana nature and the absolute mass scale of neutrinos. A prototype test apparatus DCBA-T2 has the energy resolution of about 150 keV (FWHM) around 1 MeV. In order to check the detector performance, engineering runs detecting double beta decay of 100Mo started in May 2009 using natural Mo, which contains 9.6% of 100Mo. Ten candidates of the double beta decay (ββ) have been detected so far. It has been found that the background events due to 214Bi decay are distinguishable from the double beta decays by detecting α-particles from 214Po.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.nima.2010.06.318

Additional details

Identifiers

DOI
10.1016/j.nima.2010.06.318;
PII
S0168-9002(10)01508-1;

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Journal Volume
628
Journal Issue
1
Journal Page Range
p. 209-211
ISSN
0168-9002
CODEN
NIMAER

Conference

Title
12. international Vienna conference on instrumentation
Acronym
VCI 2010
Dates
15-20 Feb 2010
Place
Vienna (Austria)

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42075156
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ALPHA PARTICLES; BETA DETECTION; BISMUTH 214; DOUBLE BETA DECAY; DRIFT CHAMBERS; ENERGY RESOLUTION; EQUIPMENT; HALF-LIFE; KEV RANGE 100-1000; MASS; MEV RANGE 01-10; MOLYBDENUM 100; NEUTRINOS; POLONIUM 214; THREE-DIMENSIONAL CALCULATIONS
Descriptors DEC
ALPHA DECAY RADIOISOTOPES; BETA DECAY; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY; BETA-MINUS DECAY RADIOISOTOPES; BISMUTH ISOTOPES; CHARGED PARTICLE DETECTION; CHARGED PARTICLES; DECAY; DETECTION; ELEMENTARY PARTICLES; ENERGY RANGE; EVEN-EVEN NUCLEI; FERMIONS; HEAVY NUCLEI; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOTOPES; KEV RANGE; LEPTONS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; MEV RANGE; MICROSECONDS LIVING RADIOISOTOPES; MINUTES LIVING RADIOISOTOPES; MOLYBDENUM ISOTOPES; MULTIWIRE PROPORTIONAL CHAMBERS; NUCLEAR DECAY; NUCLEI; ODD-ODD NUCLEI; POLONIUM ISOTOPES; PROPORTIONAL COUNTERS; RADIATION DETECTION; RADIATION DETECTORS; RADIATIONS; RADIOISOTOPES; RESOLUTION; STABLE ISOTOPES

Optional Information

Copyright
Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.