Precision planar drift chambers and cradle for the TWIST muon decay spectrometer

TL;DR

This paper details the design, construction, and performance of precision drift chambers used in the TWIST muon decay spectrometer to achieve high-accuracy measurements of muon decay parameters.

Contribution

It introduces a novel array of precision drift detectors with highly accurate positional calibration for the TWIST spectrometer.

Findings

Detectors achieve high positional accuracy

Successful integration into the TWIST spectrometer

Enhanced measurement precision for muon decay parameters

Abstract

To measure the muon decay parameters with high accuracy, we require an array of precision drift detector layers whose relative position is known with very high accuracy. This article describes the design, construction and performance of these detectors in the TWIST (TRIUMF Weak Interaction Symmetry Test) spectrometer.