Journal article

Publication year: 2023

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

Volume number: 1055

ISSN: 0168-9002

eISSN: 1872-9576

Open access status: Green

DOI Link: https://doi.org/10.1016/j.nima.2023.168480

Publisher: Elsevier

Abstract: 
The PANDA experiment at the international accelerator Facility for Antiproton and Ion Research in Europe (FAIR), Darmstadt, Germany, will address fundamental questions of hadron physics using p p annihilations. Excellent Particle Identification (PID) over a large range of solid angles and particle momenta will be essential to meet the objectives of the rich physics program. Charged PID in the target region will be provided by a Barrel DIRC (Detection of Internally Reflected Cherenkov light) counter. The Barrel DIRC, covering the polar angle range of 22-140 degrees, will provide a /K separation power of at least 3 standard deviations for charged particle momenta up to 3.5 GeV/c. The design of the Barrel DIRC features narrow radiator bars made from synthetic fused silica, an innovative multi-layer spherical lens focusing system, a prism-shaped synthetic fused silica expansion volume, and an array of lifetime-enhanced Microchannel Plate PMTs (MCP-PMTs) to detect the hit location and arrival time of the Cherenkov photons. Detailed Monte-Carlo simulations were performed, and reconstruction methods were developed to study the performance of the system. All critical aspects of the design and the performance were validated with system prototypes in a mixed hadron beam at the CERN PS. In 2020 the PANDA Barrel DIRC project advanced from the design stage to component fabrication. The series production of the fused silica bars was successfully completed in 2021 and delivery of the MCP-PMTs started in May 2022.

Harvard Citation style: Dzhygadlo, R., Belias, A., Gerhardt, A., Lehmann, D., Peters, K., Schwarz, C., et al. (2023) The PANDA Barrel DIRC, Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1055, Article 168480. https://doi.org/10.1016/j.nima.2023.168480

APA Citation style: Dzhygadlo, R., Belias, A., Gerhardt, A., Lehmann, D., Peters, K., Schwarz, C., Schwiening, J., Traxler, M., Wolf, Y., Schmitt, L., Boehm, M., Gumbert, K., Krauss, S., Lehmann, A., Miehling, D., Dueren, M., Hayrapetyan, A., Koeseoglu, I., Schmidt, M., ...Ali, A. (2023). The PANDA Barrel DIRC. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1055, Article 168480. https://doi.org/10.1016/j.nima.2023.168480