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arXiv · 0806.2097

A solenoidal electron spectrometer for a precision measurement of the neutron $β$-asymmetry with ultracold neutrons

B. Plaster·R. Carr·B. W. Filippone·D. Harrison·J. Hsiao·T. M. Ito·J. Liu·J. W. Martin·B. Tipton·J. Yuan
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Abstract

We describe an electron spectrometer designed for a precision measurement of the neutron $β$-asymmetry with spin-polarized ultracold neutrons. The spectrometer consists of a 1.0-Tesla solenoidal field with two identical multiwire proportional chamber and plastic scintillator electron detector packages situated within 0.6-Tesla field-expansion regions. Select results from performance studies of the spectrometer with calibration sources are reported.

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B. Plaster, R. Carr, B. W. Filippone, D. Harrison, J. Hsiao, T. M. Ito, J. Liu, J. W. Martin, B. Tipton, J. Yuan. 2008-06-12. A solenoidal electron spectrometer for a precision measurement of the neutron $β$-asymmetry with ultracold neutrons. https://doi.org/10.1016/j.nima.2008.07.143

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