M. Berg et al., A COMPACT RANGE TELESCOPE FOR K+ MEASUREMENTS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 381(2-3), 1996, pp. 267-274
We present range telescopes for measurements of low energy K+ mesons t
ogether with first in-beam results. The hardware trigger, based on the
observation of the mu(+) from the K+ --> mu(-) + nu(mu) decay channel
, is designed for subthreshold hadron-nucleus and heavy ion reactions,
where the kaon fraction of the total number of charged particles is m
uch less than 10(-4). The geometrical efficiency is similar to 15% and
the total efficiency similar to 4% for K+ registration in the present
version of the detector.