BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:The (NA)2STARS: Neutrinos\, Applications and Nuclear Astrophysics 
 with a Segmented Total Absorption with higher Resolution Spectrometer\, a 
 combination of calorimetric and spectroscopic tools for beta decay and in-
 beam measurements
DTSTART;VALUE=DATE-TIME:20260505T153000Z
DTEND;VALUE=DATE-TIME:20260505T161000Z
DTSTAMP;VALUE=DATE-TIME:20260514T131957Z
UID:indico-contribution-30545@indico.ific.uv.es
DESCRIPTION:Speakers: Muriel Fallot (SUBATECH)\nThe international collabor
 ation constituted based on the Total Absorption Gamma-ray\nSpectroscopy te
 chnique (TAGS) in Europe is aiming to build a Total Absorption Spectromete
 r\n(TAS) of the next generation. TAGS is a calorimetric technique using la
 rge monolithic or\nsegmented scintillators that cover more than 80% of 4p\
 , but with limited energy resolution. It\ncomplements high-resolution spec
 troscopy using Germanium crystals. It is particularly well\nsuited to phys
 ics themes requiring the detection of high-energy or multiple gamma photon
 s\,\nas in the case of beta decay of short-lived nuclei\, or the measureme
 nt of reaction cross\nsections useful in certain nucleosynthesis processes
 . Indeed\, in the case of beta decay of nuclei\nwith large Q-values\, the 
 excitation energy states of the daughter nucleus are located at high\nener
 gy and de-excited by multiple gamma lines or very energetic gamma-rays. A 
 systematic\nerror known as the Pandemonium effect [1] can affect data due 
 to the low intrinsic or\ngeometric efficiency of devices based on HPGe-typ
 e detectors. This effect results in poor\ndetermination of beta intensity 
 distributions\, and has far-reaching consequences for topics\ninvolving go
 od knowledge of these intensity distributions.\nThe new instrument\, calle
 d STARS (Segmented Total Absorption with higher Resolution\nSpectrometer)\
 , will ally efficiency with a higher segmentation and energy resolution th
 an the\nexisting spectrometers thanks to the addition of 16 LaBr3 crystals
 . The two segmented TAS\nthat exist in Europe that will benefit from this 
 upgrade are DTAS detector (18 NaI crystals [2])\nand the Rocinante detecto
 r (12 BaF2 crystals [3]). The scientific advances that will be made\npossi
 ble will concern nuclear structure\, nuclear astrophysics\, neutrino and r
 eactor physics\,\ntopics to which the TAGS technique has proven to bring s
 ignificant advances [4]. The research\nobjectives span a wide physics prog
 ram.\nThe first experiment with the STARS is planned in GANIL in July. It 
 will act at the time as a\ncommissioning of the advanced TAS that will be 
 then be available for new nuclear data\nmeasurements.\n[1] J. C. Hardy et 
 al.\, Phys. Lett. 71 B\, 307 (1977).\n[2] V. Guadilla et al.\, Nucl. Instr
 . Meth. A910\, 79-89 (2018).\n[3] E. Valencia et al.\, Phys. Rev. C 95\, 0
 24320 (2017).\n[4] A. Algora\, B. Rubio\, J.-L. Tain\, M. Fallot\, W. Gell
 etly\, Eur. Phys. J. A 57\, 85 (2021) and\nreferences therein.\n\nhttps://
 indico.ific.uv.es/event/8411/contributions/30545/
LOCATION:Universe Salón de Actos del Edificio de Cabecera (PCUV) 
URL:https://indico.ific.uv.es/event/8411/contributions/30545/
END:VEVENT
END:VCALENDAR