Darmstadt 2016 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 43: Instrumentation XI

HK 43.6: Vortrag

Mittwoch, 16. März 2016, 18:00–18:15, S1/01 A3

Efficiency measurement of the NeuLAND detector — Hans Toernqvist¹, Leyla Atar¹, Thomas Aumann¹, Konstanze Boretzky², Christoph Caesar², Igor Gasparic³, Matthias Holl¹, Andrea Horvat¹, Julian Kahlbow¹, Kenjiro Miki¹, Dominic Rossi¹, •Heiko Scheit¹, Fabia Schindler¹, and Haik Simon² for the R3B collaboration — ¹Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany — ²GSI Gesellschaft für Schwerionenforschung GmbH, Darmstadt, Germany — ³Ruđer Bošković Institute, Zagreb, Croatia

NeuLAND is the next-generation high-energy and high-efficiency neutron detector currently under construction at GSI/FAIR by the R³B collaboration. This detector will be used in a wide variety of experiments, ranging from nuclear-structure measurements of neutron-rich species to the investigation of the equation-of-state of asymmetric nuclear matter. The design goals of the full NeuLAND detector are a >95% detection efficiency for single neutrons, a time resolution of σ_t≤150 ps and a position resolution of σ_x,y,z≤1.5 cm, with a detection volume of 250×250×300 cm³. While still under construction, a set of 4 of the 30 planned NeuLAND double-planes were used for a series of experiments at the SAMURAI setup at RIKEN. In particular, the time resolution and one-neutron efficiency were measured using neutrons from the ⁷Li(p,n)⁷Be reaction. The test setup at RIKEN will be described and the resolution and efficiency results will be discussed.

This work was supported in part by HIC for FAIR, BMBF contract 05P15RDFN1 and the GSI-TU Darmstadt cooperation agreement.