Timing Performance of a Micro-Channel-Plate Photomultiplier Tube

Jonathan Bortfeldt , F. Brunbauer , C. David , D. Desforge (1) , G. Fanourakis , M. Gallinaro , F. Garcia , I. Giomataris (1) , T. Gustavsson (2, 3) , C. Guyot (1) , F.J. Iguaz (1) , M. Kebbiri (1) , K. Kordas , P. Legou (1) , J. Liu , M. Lupberger , I. Manthos , H. Muller , V. Niaouris , E. Oliveri , T. Papaevangelou (1) , K. Paraschou , M. Pomorski (4) , F. Resnati , L. Ropelewski , D. Sampsonidis , T. Schneider , P. Schwemling (1) , E. Scorsone (4) , L. Sohl (1) , M. van Stenis , P. Thuiner , Y. Tsipolitis , S.E. Tzamarias , R. Veenhof , X. Wang , S. White , Z. Zhang , Y. Zhou

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 LIDYL - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
3 DICO - Dynamique et Interactions en phase Condensée
4 LCD (CEA, LIST) - Laboratoire Capteurs Diamant (CEA, LIST)

The spatial dependence of the timing performance of the R3809U-50 Micro-Channel-Plate PMT (MCP-PMT) by Hamamatsu was studied in high energy muon beams. Particle position information is provided by a GEM tracker telescope, while timing is measured relative to a second MCP-PMT, identical in construction. In the inner part of the circular active area (radius r < 5.5 mm) the time resolution of the two MCP-PMTs combined is better than 10 ps. The signal amplitude decreases in the outer region due to less light reaching the photocathode, resulting in a worse time resolution. The observed radial dependence is in quantitative agreement with a dedicated simulation. With this characterization, the suitability of MCP-PMTs as t0 reference detectors has been validated.

Mots clés: MCP-PMT; Time resolution; Cherenkov light; Beam test; t0-reference; Monte-Carlo simulation

Domaines: Instrumentations et Détecteurs [physics.ins-det]

Jonathan Bortfeldt, F. Brunbauer, C. David, D. Desforge, G. Fanourakis, et al.. Timing Performance of a Micro-Channel-Plate Photomultiplier Tube. Nucl.Instrum.Meth.A, 2020, 960, pp.163592. ⟨10.1016/j.nima.2020.163592⟩. ⟨hal-02393388⟩