The HYDRA pion-tracker for hypernuclei studies at R3B

Lian-Cheng Ji; Uwe Bonnes; Mikolaj Cwiok; Meytal Duer; Alexandru Enciu; Piotr Gasik; Joerg Hehner; Alexandre Obertelli; Shinsuke Ota; Valerii Panin; Jerome Pibernat; Dominic Rossi; Haik Simon; Yelei Sun; Simone Velardita; Frank Wienholtz; Marcin Zaremba

arXiv · 2504.10213

The HYDRA pion-tracker for hypernuclei studies at R3B

Lian-Cheng Ji·Uwe Bonnes·Mikolaj Cwiok·Meytal Duer·Alexandru Enciu·Piotr Gasik·Joerg Hehner·Alexandre Obertelli·Shinsuke Ota·Valerii Panin·Jerome Pibernat·Dominic Rossi·Haik Simon·Yelei Sun·Simone Velardita·Frank Wienholtz·Marcin Zaremba

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Abstract

The HYpernuclei-Decay at R3B Apparatus (HYDRA) tracker is a novel time projection chamber combined with a plastic scintillator wall for timing and trigger purposes. This detector is a low radiation length tracker dedicated to measuring pions from the weak decay of light hypernuclei produced from ion-ion collisions at few GeV/nucleon in the magnetic field of the large-acceptance dipole magnet GLAD at the Reactions with Relativistic Radioactive Beams (R3B) experiment at GSI-FAIR. In this paper, we describe the design of the detector and provide the results of its first characterizations.

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Lian-Cheng Ji, Uwe Bonnes, Mikolaj Cwiok, Meytal Duer, Alexandru Enciu, Piotr Gasik, Joerg Hehner, Alexandre Obertelli, Shinsuke Ota, Valerii Panin, Jerome Pibernat, Dominic Rossi, Haik Simon, Yelei Sun, Simone Velardita, Frank Wienholtz, Marcin Zaremba. 2025-04-14. The HYDRA pion-tracker for hypernuclei studies at R3B. https://arxiv.org/abs/2504.10213

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