The design and basic performance of a Spiral Fiber Tracker for the J-PARC E36 experiment

TL;DR

The paper presents the design, construction, and testing of a spiral fiber tracker for the J-PARC E36 experiment, demonstrating its high efficiency and successful deployment in particle momentum measurements.

Contribution

It introduces a novel spiral winding technique for fiber ribbons and confirms its effectiveness in high-resolution charged particle tracking.

Findings

High detection efficiency confirmed in cosmic ray tests

Successful integration into the E36 experiment

Good position alignment achieved

Abstract

A spiral fiber tracker (SFT) has been designed and produced for the J-PARC E36 experiment as an element of the tracking system for conducting a high-resolution momentum measurement of charge particles from kaon decays. A novel technique to wind the pre-made fiber ribbons spirally was employed for the configuration with four detector layers made of 1 mm diameter plastic scintillating fibers. Good position alignment and sufficiently high detection efficiency for charged particles with minimum ionizing energy were confirmed in cosmic ray test. The tracker was successfully used in the E36 experiment.