GARFIELD + RCo digital upgrade: A modern set-up for mass and charge identification of heavy-ion reaction products

Abstract

An upgraded GARFIELD + Ring Counter (RCo) apparatus is presented with improved performances as far as electronics and detectors are concerned. On one side fast sampling digital read out has been extended to all detectors, allowing for an important simplification of the signal processing chain together with an enriched extracted information. On the other side a relevant improvement has been made in the forward part of the setup (RCo): an increased granularity of the CsI(Tl) crystals and a higher homogeneity in the silicon detector resistivity. The renewed performances of the GARFIELD + RCo array make it suitable for nuclear reaction measurements both with stable and with Radioactive Ion Beams (RIB), like the ones foreseen for the SPES facility, where the Physics of Isospin can be studied. PACS. 29.30.Ep

Non-statistical decay and α-correlations in the12C+12C fusion–evaporation reaction at 95 MeV

“…As explained in greater details in paper I, we have measured the 12 C+ 12 C reaction at 95 MeV with the GARFIELD+RCo set-up [16]. We have selected a data-set consisting of events completely detected in charge (Z tot = 12) which corresponds to a large extent to the complete fusion-evaporation channel.…”

Experimental study of precisely selected evaporation chains in the decay of excited Mg25

“…The experimental apparatus consists of the multidetector GARFIELD and Ring Counter, located in the Hall III of Laboratori Nazionali di Legnaro (LNL): a complete description and details can be found elsewhere [18]. Briefly, GARFIELD is a twostage detector consisting of two identical microstrip gas chambers (the E stage) and CsI(Tl) crystals (for residual particle energy).…”

The SPES Project at LNL: Status of the Project, Technical Challenges, Instrumentation, Scientific Program

“…In particular, one of the traditional fields is the study of nuclei under extreme conditions, that is the study of the evolution of nuclear structure towards the region far from stability in terms of excitation energy (decay and behaviour of hot nuclei), high spin states (highly rotating nuclei), and, finally, high isospin (high N over Z ratio). Large efforts are devoted to the upgrading of installed experimental set-ups (PRISMA [13], GARFIELD [14], etc.). The developments of new instrumentation (AGATA [16], NEDA [19], FAZIA [18], GALILEO [15], ATS − ACTAR [17], PARIS [20], TRACE [21], etc.)…”

“…Large efforts are devoted to the upgrading of installed experimental set-ups (PRISMA [13], GARFIELD [14], etc.). The developments of new instrumentation (AGATA [16], NEDA [19], FAZIA [18], GALILEO [15], ATS − ACTAR [17], PARIS [20], TRACE [21], etc.) are also performed within international collaborations in order to carry out up-to-date experimentation at SPES, as it was recently discussed in the 2 nd International SPES Workshop (May 26-28, 2014), where about 40 Letters of Intents have been presented and discussed with the Scientific Advisory Commitee [22].…”