Journalartikel

Jahr der Veröffentlichung: 2023

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

Bandnummer: 1049

ISSN: 0168-9002

eISSN: 1872-9576

Open Access Status: Green

DOI Link: https://doi.org/10.1016/j.nima.2023.168047

Verlag: Elsevier

Abstract: 
The PANDA experiment at the FAIR facility at GSI will study hadron physics using a high intensity antiproton beam of up to 15 GeV/c momentum to perform high precision spectroscopy. Two DIRC detectors with their image planes residing in an similar to 1 T magnetic field will be used in the experiment. The only suitable photon detectors for both DIRCs were identified to be Microchannel-Plate Photomultipliers (MCP-PMTs). Since the aging problems of MCP-PMTs were solved recently by coating the MCPs with the so-called ALD-technique (atomic layer depostion) we are investigating devices which are significantly improved with respect to other parameters, as, e.g., the collection efficiency (CE) and the quantum efficiency (QE). The latest generation of MCP-PMTs can reach a detective quantum efficiency DQE= QE center dot CE of 30%. This paper will present the performance of the most advanced 53 x 53 mm(2) ALD-coated MCP-PMTs from Photonis (8 x 8 and 3 x 100 anodes) and Photek (8 x 8 anodes), also inside the magnetic field. With a picosecond laser and a multi-hit capable DAQ system which allows read out up to 300 pixels simultaneously, parameters like darkcount rate, afterpulse probability and time resolution can be investigated as a function of incident photon position.

Harvard-Zitierstil: Miehling, D., Boehm, M., Gumbert, K., Krauss, S., Lehmann, A., Belias, A., et al. (2023) Lifetime and performance of the very latest microchannel-plate photomultipliers, Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1049, Article 168047. https://doi.org/10.1016/j.nima.2023.168047

APA-Zitierstil: Miehling, D., Boehm, M., Gumbert, K., Krauss, S., Lehmann, A., Belias, A., Dzhygadlo, R., Gerhardt, A., Lehmann, D., Peters, K., Schepers, G., Schwarz, C., Schwiening, J., Traxler, M., Wolf, Y., Schmitt, L., Dueren, M., Hayrapetyan, A., Koeseoglu, I., ...Ali, A. (2023). Lifetime and performance of the very latest microchannel-plate photomultipliers. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1049, Article 168047. https://doi.org/10.1016/j.nima.2023.168047