Electrical measurement of wire tension in a multi-wire drift chamber

A new and simple technique has been developed to measure the wire tension of a multi-wire drift chamber, which is the prototype chamber of DCBA (Drift Chamber Beta-ray Analyzer) for double beta decay experiments. The present method uses two wires adjacent to each other in the chamber for applying AC and DC electric fields, and can easily detect a weak current signal at the resonance frequency corresponding to the wire tension. The wire tension has been measured with an accuracy of about 1%.