Journal article

Publication year: 2021

Journal: Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Volume number: 1011

ISSN: 0168-9002

eISSN: 1872-9576

Open access status: Hybrid

DOI Link: https://doi.org/10.1016/j.nima.2021.165601

Publisher: Elsevier

Abstract: 
A digital algorithm for real-time feature extraction, i.e. determination of pulse amplitude and timing, has been developed for the forward-spectrometer electromagnetic calorimeter in the PANDA experiment. The algorithm, which is based on the well known optimal-filter algorithm, has been designed to allow reconstruction of pile-up signals in real time and to work in a free-running DAQ system such as PANDA. To benchmark the algorithm, a Geant4-based Monte Carlo model of photon interactions in the calorimeter has been developed to generate realistic detector signals which were used as inputs to a VHDL simulation of the algorithm. The results of this simulation study show that the developed algorithm improves the time resolution by almost 50% compared to a conventional linear constant fraction discriminator algorithm. For the PANDA calorimeter, this results in a time root resolution close to 100 ps/ GeV per detector element at high energies. The algorithm allows reconstruction of the amplitude and timing of pile-up pulses separated by as little as 30 ns with good efficiency, fulfilling the PANDA requirements.

Harvard Citation style: Preston, M., Bukreeva, S., Diehl, S., Marciniewski, P., Novotny, R., Ryzhikov, S., et al. (2021) A feature-extraction and pile-up reconstruction algorithm for the forward-spectrometer EMC of the PANDA experiment, Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1011, Article 165601. https://doi.org/10.1016/j.nima.2021.165601

APA Citation style: Preston, M., Bukreeva, S., Diehl, S., Marciniewski, P., Novotny, R., Ryzhikov, S., Semenov, P., & Tegner, P. (2021). A feature-extraction and pile-up reconstruction algorithm for the forward-spectrometer EMC of the PANDA experiment. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1011, Article 165601. https://doi.org/10.1016/j.nima.2021.165601