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

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

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

Authors

Description

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.
30 pages, 19 figures, 1 table, submitted to NIM A