Development of fast-response PPAC with strip-readout for heavy-ion beams

Abstract

A strip-readout parallel-plate avalanche counter (SR-PPAC) has been developed aiming at the high detection efficiency and good position resolution in high-intensity heavy-ion measurements. The performance was evaluated using 115 MeV/u ${}^{132}$Xe, 300 MeV/u ${}^{132}$Sn, and 300 MeV/u ${}^{48}$Ca beams. A detection efficiency beyond 99% for these beams is achieved even at an incident beam intensity of 0.7 billion particles per second. The best position resolution achieved is 235 um (FWHM).

arXiv comment16 pages, 18 figures, 2 tables