A multiwire proportional chamber for precision studies of neutron β decay angular correlations

T. M. Ito, R. Carr, B. W. Filippone, J. W. Martin, B. Plaster, G. Rybka, J. Yuan

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


A new multiwire proportional chamber (MWPC) was designed and constructed for precision studies of neutron β decay angular correlations. Its design has several novel features, including the use of low pressure neopentane as the MWPC gas and an entrance window made of thin Mylar sheet reinforced with Kevlar fibers. In the initial off-line performance tests, the gas gain of neopentane and the position resolution were studied.

Original languageEnglish
Pages (from-to)676-686
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
StatePublished - Feb 11 2007

Bibliographical note

Funding Information:
We gratefully acknowledge the technical support of R. Cortez and J. Pendlay. We thank J. Mohnke for his suggestion of using neopentane as the MWPC gas, P. Chan for his help with setting up the wire winding machine, and E. Lin and C. Kessens for their help with the thin window development. We thank D. Snowden-Ifft of Occidental College for generously loaning us his wire winding machine. We thank C. Morris for various valuable suggestions. This work was supported by the National Science Foundation.


  • Low energy electron detection
  • Multiwire proportional chamber
  • Neutron β decay

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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