Experience with series-produced MCP-PMTs for the PANDA Barrel DIRC

Gumbert K, Krauss S, Lehmann A, Miehling D, Belias A, Dzhygadlo R, Gerhardt A, Lehmann D, Peters K, Schepers G, Schwarz C, Schwiening J, Traxler M, Wolf Y, Schmitt L, Sfienti C, Ali A (2026)

Publication Type: Journal article

Publication year: 2026

Journal

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

Book Volume: 1090

Article Number: 171651

DOI: 10.1016/j.nima.2026.171651

Abstract

The PANDA experiment at the FAIR Facility in Darmstadt aims to investigate fundamental aspects of quantum chromodynamics using antiproton–proton annihilations. The Barrel DIRC detector requires high-performance microchannel-plate photomultiplier tubes (MCP-PMTs) for efficient particle identification. MCP-PMTs of the type XP85112-S-BA with atomic layer deposited (ALD) coatings were ordered from Photonis for the PANDA Barrel DIRC and underwent an extensive quality assurance process at the University of Erlangen–Nuremberg. While 63 tubes met the specifications, issues like high dark count rates, afterpulse ratios, and gain inhomogeneity limited the acceptance rate. Lifetime tests confirmed the durability of the ALD-coated MCPs for the required integrated anode charge.

Authors with CRIS profile

Katja Gumbert Lehrstuhl für Experimentelle Astroteilchenphysik Steffen Krauss Lehrstuhl für Experimentelle Astroteilchenphysik Albert Lehmann Lehrstuhl für Experimentelle Astroteilchenphysik Daniel Miehling Lehrstuhl für Experimentelle Astroteilchenphysik

Involved external institutions

Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) Helmholtz-Institut Mainz (HIM) DE Germany (DE) GSI Helmholtzzentrum für Schwerionenforschung GmbH DE Germany (DE) Facility for Antiproton and Ion Research in Europe GmbH (FAIR GmbH) DE Germany (DE)

How to cite

APA:

Gumbert, K., Krauss, S., Lehmann, A., Miehling, D., Belias, A., Dzhygadlo, R.,... Ali, A. (2026). Experience with series-produced MCP-PMTs for the PANDA Barrel DIRC. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1090. https://doi.org/10.1016/j.nima.2026.171651

MLA:

Gumbert, Katja, et al. "Experience with series-produced MCP-PMTs for the PANDA Barrel DIRC." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1090 (2026).

BibTeX: Download