The characteristics and performance of a Dual Position Sensitive Multi-Wire Proportional Counter (DPS-MWPC) used to measure the scattering angle, interaction position on the target and the velocity of reaction products, detected in the VAMOS++ magnetic spectrometer, are reported. The detector consists of a pair of position sensitive low pressure MWPCs and provides both fast timing signals, along with the two-dimensional position coordinates required to define the trajectory of the reaction products. A time-of-flight resolution of 305(11) ps (FWHM) was measured. The measured resolutions (FWHM) were 2.5(3) mrad and 560(70) {\mu}m for the scattering angle and the interaction point at the target respectively. The subsequent improvement of the Doppler correction of the energy of the gamma-rays, detected in the gamma-ray tracking array AGATA in coincidence with isotopically identified ions in VAMOS++, is also discussed.
@article{arxiv.1512.08881,
title = {Dual Position Sensitive MWPC for tracking reaction products at VAMOS++},
author = {Marine Vandebrouck and Antoine Lemasson and Maurycy Rejmund and Georges Fremont and Julien Pancin and Alahari Navin and Caterina Michelagnoli and Johan Goupil and Charles Spitaels and Bertrand Jacquot},
journal= {arXiv preprint arXiv:1512.08881},
year = {2015}
}
Comments
Accepted for publication in Nuclear Inst. and Methods in Physics Research, A