A Multiwire Proportional Chamber for Precision Studies of Neutron β Decay Angular Correlations
نویسنده
چکیده
A new multiwire proportional chamber 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 offline performance tests, the gas gain of neopentane and the position resolution were studied.
منابع مشابه
A multiwire proportional chamber for precision studies of neutron b decay angular correlations
A new multiwire proportional chamber (MWPC) was designed and constructed for precision studies of neutron b 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 posi...
متن کاملA solenoidal electron spectrometer for a precision measurement of the neutron β-asymmetry with ultracold neutrons
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 fieldexpansion regions. Select results from performance studies of the...
متن کاملSharpening low-energy, standard-model tests via correlation coefficients in neutron beta decay.
The correlation coefficients a, A, and B in neutron beta decay are proportional to the ratio of the axial-vector-to-vector weak coupling constants, gA/gV, to leading recoil order. With the advent of the next generation of neutron-decay experiments, the recoil-order corrections to these expressions become experimentally accessible, admitting a plurality of standard model (SM) tests. The measurem...
متن کاملICFA Instrumentation Bulletin BEAM TESTS OF THE CLEO III LIF-TEA RING IMAGING CHERENKOV DETECTOR
We present preliminary results from a test beam run of CLEO III RICH modules. The system consists of LiF radiators and multiwire proportional chambers containing a mixture of CH4 and TEA gases. The radiators were both at and \sawtooth." The data were taken in a beam dump at Fermilab. We will discuss the chamber stability, electronics, the number of photons observed for both radiators, the angul...
متن کاملar X iv : h ep - p h / 03 11 35 0 v 1 2 6 N ov 2 00 3 Radiative corrections to the neutron β − decay within the Standard Model
Radiative corrections to the neutron β−decay within the Standard Model. Abstract Starting with the basic Lagrangian of the Standard Model, the radiative corrections to the neutron β−decay are acquired. The electroweak interactions are consistently taken into consideration amenably to the Weinberg-Salam theory. The effect of the strong quark-quark interactions on the neutron β−decay is parameter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007