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SUMMARY:βPlast\, a plastic scintillator for fast timing and decay spectro
 scopy
DTSTART;VALUE=DATE-TIME:20250325T090000Z
DTEND;VALUE=DATE-TIME:20250325T093000Z
DTSTAMP;VALUE=DATE-TIME:20260716T022937Z
UID:indico-contribution-26336@indico.ific.uv.es
DESCRIPTION:Speakers: Carole Chatel (Institut für Kernphysik\, Technische
  Universität Darmstadt\, Schlossgartenstrasse 9\, 64289\, Darmstadt\, Ger
 many)\nDEcay SPECtroscopy (DESPEC) experiments [1] are part of the NUSTAR 
 collaboration\, one of the four scientific pillars of the FAIR/GSI facilit
 y. Those experiments aim at studing the properties of exotic nuclei using 
 high- resolution decay spectroscopy. They are currently performed at the F
 Ragment Separator (FRS) and will be\, in the future\, at the Super-FRS fac
 ility at FAIR\, at GSI. The DESPEC setup comprises a series of state-of-th
 e-art detection systems tailored to the experimental goals. The heavy ion 
 implantation stack is the core of this setup: a so-called ‘snout’ wher
 ein exotic ions are implanted in detectors. This stack comprises usually 1
  to 3 layers of highly- segmented AIDA double-sided silicon strip detector
 s [2] which are sandwiched between two “βPlast” plastic\nscintillator
  detectors for beta-particles\, placed upstream and downstream. Implanted 
 ions emit gamma-rays that can then be measured by different systems such a
 s the FATIMA array of LaBr3(Ce) detectors [3]\, DEGAS HPGe detectors [4] o
 r the DTAS Total Absorption Spectrometer\, which enables fast-timing\, hig
 h-precision or high-efficiency measurements\, respectively.\nThe βPlast d
 etectors are of paramount importance. They are indeed able to provide exce
 llent timing resolution for β particles emitted by the exotic ions of int
 erest to enable β- timing-measurements as well as a veto for punchthro
 ugh events\, for example. Several configurations of those detectors have b
 een used in recent years\nduring FAIR Phase-0 experiments. The last one is
  composed of a 247.50.3 cm3 rectangular monolithic plastic sheet coupled a
 t edges by an optical silicon pad with arrays of 3*3 mm2 aligned silicon P
 hotoMultipliers (SiPMs).\nEach long and short side contains respectively 4
 8 and 16 aligned SiPMs\, with adjacent pairs of SiPMs gathered to form\, i
 n total\, 64 channels per detector. Those are connected to the TAMEX multi
 -channel TDCs\, developed in-house at GSI\, in order to exploit the fast-t
 iming characteristics of the βPlast.\nThis presentation will focus on the
  technical details of the detectors and on its characterisation. It will t
 hen describe the recent development that aimed at improving detector perfo
 rmance and accessing the position of a particle by creating a lookup table
  using time-differences between the SiPMs. Finally\, it will give an overv
 iew of future development work and redesign.\n\n[1] A.K. Mistry et al.\, T
 he DESPEC setup for GSI and FAIR\, Nucl. Instrum. Methods in phys. Res. A 
 1033\, 166662 (2022)\n[2] O. Hall et al.\, The Advanced Implantation Detec
 tor Array\, Nucl. Instrum. Methods in phys. Res. A 1050\, 168166 (2023)\n[
 3] M. Rudigier et al.\, FATIMA – Fast TIMing Array for DESPEC at FAIR\, 
 Nucl. Instrum. Methods in phys. Res. A 969\, 163967 (2020)\n[4] G.S. Li et
  al.\, Characteristics of the DEGAS-FATIMA Hybrid setup for the DESPEC pro
 gram at NUSTAR\, Nucl. Instrum. Methods in phys. Res. A 987\, 164806 (2021
 )\n\nhttps://indico.ific.uv.es/event/7777/contributions/26336/
LOCATION:Parc Científic de la Universitat de València Salón de Actos Ed
 ificio de Cabecera Parque Científico
URL:https://indico.ific.uv.es/event/7777/contributions/26336/
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