The Focal-Plane Detector Package on the TUNL Split-Pole Spectrograph
A focal-plane detector for the Enge split-pole spectrograph at the Triangle Universities Nuclear Laboratory has been designed. The detector package consists of two position-sensitive gas avalanche counters: a gas proportionality energy loss section and a residual energy scintillator. This setup allows both particle identification and focal-plane reconstruction. In this paper, we will detail the construction of each section along with their accompanying electronics and data acquisition. Effects of energy loss throughout the detector, ray-tracing procedures, and resolution as a function of fill pressure and bias voltage are also investigated. A measurement of the 27Al (d,p) reaction is used to demonstrate a detector performance and to illustrate a Bayesian method of energy calibration.
Marshall, C; Setoodehnia, K; Kowal, K; Portillo, F; Champagne, AE; Hale, S; Dummer, A; Longland, R
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