SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 74: Poster

HK 74.50: Poster

Donnerstag, 23. März 2023, 17:30–19:00, HSZ EG

High-energy gamma calibration of CALIFA with a Pu-C source — •Phuong Nguyen, Leyla Atar, Christian Suerder, and Thorsten Kroell for the R3B collaboration — Institut für Kern- physik, TU Darmstadt, Darmstadt, Germany

CALIFA (CALorimeter for In-Flight detection of gamma-rays and high energy charged pArticles) is the scintillator based calorimeter of the R3B (reactions with relativistic radioactive beams) experiment at FAIR that surrounds the target. It currently consists of 1528 scintillation CsI(Tl) crystals and detects gamma-rays and light charged particles simultaneously. The energy calibration of CALIFA crystals is done using different sources, from low energy-gamma peaks (22Na) to high energy-gamma peaks (Pu-C) reaching from 511 keV up to 6.1 MeV. This is essential due to the high dynamic range (100keV to 300MeV) of CALIFA. To improve the calibration quality, various gamma sources are combined in the calibration procedure and automated by a Python script.

This work is supported by BMBF under contract 05P19RDFN1 and 05P21RDFN2 and the Helmholtz Research Academy Hesse for FAIR - HFHF.