Neutral beam line to study K-L(0)->pi(0)v(v)over-bar decay at the KEK 12-GeV proton synchrotron

摘要

A neutral beam line was constructed at the 12-GeV proton synchrotron of KEK for an experiment to study K-L(0) -> pi(0)v (v) over bar decay. It was designed to make a well-collimated K-L(0) beam with small gamma and neutron halos. In a series of beam-survey experiments, beam profiles and energy spectra of gamma's and neutrons were measured. It was confirmed that the beam was sharply collimated with a halo-to-core flux ratio lower than 10(-4). These experimental results were well reproduced by a Monte-Carlo simulation based on the GEANT-3 program. (c) 2005 Elsevier B.V. All rights reserved.