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Assembly, testing, and installation of mPMT photosensor for the Water Cherenkov Test Experiment

Fuente: arXiv

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Bibliographic Details
Main Authors:	Gola, M., Barbi, M., Berardi, V., Buchowicz, A., Buril, N., Cook, L., Cuen-Rochin, S., DeRosa, G., de Perio, P., Dygnarowicz, K., Ferrazzi, B., Fiorentini, A., Garde, C. S., Galiński, G., Graham, K., Gornea, R., Hartz, M., Holeczek, J., Jagtap, S., Kala, M., Karlen, D., Kothekar, S., Koerich, L., Kolev, N., Konaka, A., Kulkarni, A., Kowalewski, J., Kurjata, R., Li, X., Lindner, T., Lu, P., Mache, A., Marzec, J., Nikonov, I., Nurek, M., Obrębski, W., Patil, S., Pastuszak, G., Piotrowski, B., Rimmer, J., Roskovec, B., Ruggeri, A. C., Rychter, A., Satao, K., Sharma, N., Stockton, A., Yousefnejad, S., Yu, T., Ziembicki, M.
Format:	Preprint
Published:	2025
Subjects:	Instrumentation and Detectors
Online Access:	Acceder al recurso
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_version_	1866918080563642368
author	Gola, M. Barbi, M. Berardi, V. Buchowicz, A. Buril, N. Cook, L. Cuen-Rochin, S. DeRosa, G. de Perio, P. Dygnarowicz, K. Ferrazzi, B. Fiorentini, A. Garde, C. S. Galiński, G. Graham, K. Gornea, R. Hartz, M. Holeczek, J. Jagtap, S. Kala, M. Karlen, D. Kothekar, S. Koerich, L. Kolev, N. Konaka, A. Kulkarni, A. Kowalewski, J. Kurjata, R. Li, X. Lindner, T. Lu, P. Mache, A. Marzec, J. Nikonov, I. Nurek, M. Obrębski, W. Patil, S. Pastuszak, G. Piotrowski, B. Rimmer, J. Roskovec, B. Ruggeri, A. C. Rychter, A. Satao, K. Sharma, N. Stockton, A. Yousefnejad, S. Yu, T. Ziembicki, M.
author_facet	Gola, M. Barbi, M. Berardi, V. Buchowicz, A. Buril, N. Cook, L. Cuen-Rochin, S. DeRosa, G. de Perio, P. Dygnarowicz, K. Ferrazzi, B. Fiorentini, A. Garde, C. S. Galiński, G. Graham, K. Gornea, R. Hartz, M. Holeczek, J. Jagtap, S. Kala, M. Karlen, D. Kothekar, S. Koerich, L. Kolev, N. Konaka, A. Kulkarni, A. Kowalewski, J. Kurjata, R. Li, X. Lindner, T. Lu, P. Mache, A. Marzec, J. Nikonov, I. Nurek, M. Obrębski, W. Patil, S. Pastuszak, G. Piotrowski, B. Rimmer, J. Roskovec, B. Ruggeri, A. C. Rychter, A. Satao, K. Sharma, N. Stockton, A. Yousefnejad, S. Yu, T. Ziembicki, M.
contents	The multi-Photomultiplier Tube (mPMT) photosensors will be used in the Water Cherenkov Test Experiment (WCTE) to efficiently detect the photons produced in the whole detector. One of the aims behind the development of WCTE is to test the technology and implement it in future water Cherenkov experiments such as the Hyper-Kamiokande experiment and its Intermediate Water Cherenkov Detector. Each mPMT is built using nineteen 3-inch PMTs arranged on a semi-spherical support matrix. In this paper, we describe the design and manufacture of the mechanical components, the procedures for casting an optical gel between PMTs and acrylic cover, and the overall assembly procedure of the mPMTs. Details of the electronics used in the mPMT modules are not included in this paper and will be presented in a separate publication. We also report on the R&D performed on the selection of the optical gel ratio along with transmittance measurements and the reflectance measurements performed on the aluminium reflector. We also present the optical tests performed on the mPMT module using a 405 nm LED and the resulting increase in the effective photosensitive area by surrounding the PMTs with a reflector. A summary of the production and installation of the mPMTs for the WCTE is also presented in this paper.
format	Preprint
id	arxiv_https___arxiv_org_abs_2504_07216
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Assembly, testing, and installation of mPMT photosensor for the Water Cherenkov Test Experiment Gola, M. Barbi, M. Berardi, V. Buchowicz, A. Buril, N. Cook, L. Cuen-Rochin, S. DeRosa, G. de Perio, P. Dygnarowicz, K. Ferrazzi, B. Fiorentini, A. Garde, C. S. Galiński, G. Graham, K. Gornea, R. Hartz, M. Holeczek, J. Jagtap, S. Kala, M. Karlen, D. Kothekar, S. Koerich, L. Kolev, N. Konaka, A. Kulkarni, A. Kowalewski, J. Kurjata, R. Li, X. Lindner, T. Lu, P. Mache, A. Marzec, J. Nikonov, I. Nurek, M. Obrębski, W. Patil, S. Pastuszak, G. Piotrowski, B. Rimmer, J. Roskovec, B. Ruggeri, A. C. Rychter, A. Satao, K. Sharma, N. Stockton, A. Yousefnejad, S. Yu, T. Ziembicki, M. Instrumentation and Detectors The multi-Photomultiplier Tube (mPMT) photosensors will be used in the Water Cherenkov Test Experiment (WCTE) to efficiently detect the photons produced in the whole detector. One of the aims behind the development of WCTE is to test the technology and implement it in future water Cherenkov experiments such as the Hyper-Kamiokande experiment and its Intermediate Water Cherenkov Detector. Each mPMT is built using nineteen 3-inch PMTs arranged on a semi-spherical support matrix. In this paper, we describe the design and manufacture of the mechanical components, the procedures for casting an optical gel between PMTs and acrylic cover, and the overall assembly procedure of the mPMTs. Details of the electronics used in the mPMT modules are not included in this paper and will be presented in a separate publication. We also report on the R&D performed on the selection of the optical gel ratio along with transmittance measurements and the reflectance measurements performed on the aluminium reflector. We also present the optical tests performed on the mPMT module using a 405 nm LED and the resulting increase in the effective photosensitive area by surrounding the PMTs with a reflector. A summary of the production and installation of the mPMTs for the WCTE is also presented in this paper.
title	Assembly, testing, and installation of mPMT photosensor for the Water Cherenkov Test Experiment
topic	Instrumentation and Detectors
url	https://arxiv.org/abs/2504.07216