In this paper, thestructureof RPC, the curvesofefficiency, countingrate, darkcurrent, multiple hit andsignalamplitudeversushigh voltagemeasuredusingcosmicray are presented.
"If the sudden frequency change is neglected, then after only eight hours, a complete rotation of the pulsar is lost in our counting, and we can no longer determine at which rotational phase the gamma-ray photons reach the detector aboard Fermi, " Pletsch explained.