The latest performance and refurbishment of the pixelated Timing Counter (pTC) in the MEG II experiment

Yonemoto T, Boca G, Cattanneo PW, Dal Maso G, De Gerone M, Barusso LF, Gatti F, Ootani W, Papa A, Rossella M & Uchiyama Y
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Yonemoto, T., Boca, G., Cattanneo, P. W., Dal Maso, G., De Gerone, M., Barusso, L. F., … Uchiyama, Y. (2024). The latest performance and refurbishment of the pixelated Timing Counter (pTC) in the MEG II experiment. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1068, 169720 (2 pp,). https://doi.org/10.1016/j.nima.2024.169720
https://www.dora.lib4ri.ch/psi/islandora/object/psi:65633

We have operated the MEG II pixelated timing counter maintaining its overall timing resolution at high level for precise timing measurement of positrons. Since its construction in 2017, the detector's pixels have shown degradation with high-rate beam irradiation and components (plastic scintillators, SiPMs) aging over time. In 2024, using new 960 SiPMs, we produced and mounted new 80 pixels onto the detector with estimation of the performance improvement.

Details
Publication Type

Journal Article

Title

The latest performance and refurbishment of the pixelated Timing Counter (pTC) in the MEG II experiment

Author(s)

Yonemoto, T.

Boca, G.

Cattanneo, P.W.

Dal Maso, G. (3203 Muon Physics)

De Gerone, M.

Barusso, L. Ferrari

Gatti, F.

Ootani, W.

Papa, A. (3203 Muon Physics)

Rossella, M.

Uchiyama, Y.

Journal

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

Volume

1068

Start Page

169720 (2 pp,)

Publication Year

2024

Peer Review

Yes

Keywords

silicon photo-multiplier (siPM)
plastic scintillator tile
positron timing measurement

Collection

PSI Publications