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Featured researches published by U. Menzel.


IEEE Transactions on Nuclear Science | 2015

Light Induced Afterpulses in Photomultipliers

M. L. Ahnen; J. Hose; U. Menzel; R. Mirzoyan

Various spurious effects limit the effectiveness of Photomultipliers when used in low-light-level coincidence counting experiments. One of these effects is afterpulses from light emission in the Photomultiplier. Here we present a study on the light emission in Photomultipliers using a variety of methods. First we image the light emission directly. Second we characterize the light emission spectrum. Finally we investigate the time resolved light emission. In particular we find that, not only the dynodes “glow,” but also the support structure emits light. A fluorescent effect is found. The experiments performed help to understand the fundamental effects of light emission and afterpulses in Photomultipliers.


arXiv: Instrumentation and Methods for Astrophysics | 2013

Towards SiPM camera for current and future generations of Cherenkov tele- scopes

D. Mazin; M. Teshima; José Illa; D. Fink; E. Lorenz; J. Sitarek; R. Mirzoyan; M. Martínez; U. Menzel; J. Hose; J. Cortina; Priyadarshini Bangale


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2015

Evaluation of the basic propertied of the novel 1.5 in. size PMTs from Hamamatsu Photonics and Electron Tubes Enterprises

T. Toyama; Y. Hanabata; J. Hose; U. Menzel; R. Mirzoyan; D. Nakajima; M. Takahashi; M. Teshima; T. Yamamoto


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2017

Evaluation of novel PMTs of worldwide best parameters for the CTA project

R. Mirzoyan; D. Müller; J. Hose; U. Menzel; D. Nakajima; M. Takahashi; M. Teshima; T. Toyama; T. Yamamoto


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2016

Evaluation of Photo Multiplier Tube candidates for the Cherenkov Telescope Array

R. Mirzoyan; D. Müller; Y. Hanabata; J. Hose; U. Menzel; D. Nakajima; M. Takahashi; M. Teshima; T. Toyama; T. Yamamoto


arXiv: Instrumentation and Methods for Astrophysics | 2013

Novel Photo Multiplier Tubes for the Cherenkov Telescope Array Project

Takeshi Toyama; R. Mirzoyan; H. J. Dickinson; C. Fruck; Urgen Hose; E. Lorenz; U. Menzel; D. Nakajima; R. Orito; Thomas Schweizer; M. Teshima; T. Yamamoto


Proceedings of International Conference on New Photo-detectors — PoS(PhotoDet2015) | 2016

Novel 1.5' Size PMTs of Outstanding Parameters for the CTA Project

R. Mirzoyan; Dominik Muller; Takeshi Toyama; D. Nakajima; U. Menzel; Juergen Hose; Mitsunari Takahashi; T. Yamamoto; Masahiro Teshima

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