Buchumschlag

Upgrade of ASACUSA's Antihydrogen Detector

Fuente: arXiv

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Bibliographische Detailangaben
Hauptverfasser:	Kraxberger, V., Amsler, C., Breuker, H., Chesnevskaya, S., Costantini, G., Ferragut, R., Giammarchi, M., Gligorova, A., Gosta, G., Higaki, H., Hunter, E. D., Killian, C., Kletzl, V., Kuroda, N., Lanz, A., Leali, M., Mäckel, V., Maero, G., Malbrunot, C., Mascagna, V., Matsuda, Y., Migliorati, S., Murtagh, D. J., Nagata, Y., Nanda, A., Nowak, L., Pasino, E., Romé, M., Simon, M. C., Tajima, M., Toso, V., Ulmer, S., Venturelli, L., Weiser, A., Widmann, E., Wolz, T., Yamazaki, Y., Zmeskal, J.
Format:	Preprint
Veröffentlicht:	2022
Schlagworte:	Instrumentation and Detectors Nuclear Experiment
Online-Zugang:	Acceder al recurso
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_version_	1866912265887809536
author	Kraxberger, V. Amsler, C. Breuker, H. Chesnevskaya, S. Costantini, G. Ferragut, R. Giammarchi, M. Gligorova, A. Gosta, G. Higaki, H. Hunter, E. D. Killian, C. Kletzl, V. Kuroda, N. Lanz, A. Leali, M. Mäckel, V. Maero, G. Malbrunot, C. Mascagna, V. Matsuda, Y. Migliorati, S. Murtagh, D. J. Nagata, Y. Nanda, A. Nowak, L. Pasino, E. Romé, M. Simon, M. C. Tajima, M. Toso, V. Ulmer, S. Venturelli, L. Weiser, A. Widmann, E. Wolz, T. Yamazaki, Y. Zmeskal, J.
author_facet	Kraxberger, V. Amsler, C. Breuker, H. Chesnevskaya, S. Costantini, G. Ferragut, R. Giammarchi, M. Gligorova, A. Gosta, G. Higaki, H. Hunter, E. D. Killian, C. Kletzl, V. Kuroda, N. Lanz, A. Leali, M. Mäckel, V. Maero, G. Malbrunot, C. Mascagna, V. Matsuda, Y. Migliorati, S. Murtagh, D. J. Nagata, Y. Nanda, A. Nowak, L. Pasino, E. Romé, M. Simon, M. C. Tajima, M. Toso, V. Ulmer, S. Venturelli, L. Weiser, A. Widmann, E. Wolz, T. Yamazaki, Y. Zmeskal, J.
contents	The goal of the ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) CUSP experiment at CERN's Antiproton Decelerator is to measure the ground state hyperfine splitting of antihydrogen in order to test whether CPT invariance is broken. The ASACUSA hodoscope is a detector consisting of two layers of 32 plastic scintillator bars individually read out by two serially connected silicon photo multipliers (SiPMs) on each end. Two additional layers for position resolution along the beam axis were scintillator fibres, which will now be replaced by scintillating tiles placed onto the existing bars and also read out by SiPMs. If the antiproton of antihydrogen annihilates in the center of the hodoscope, particles (mostly pions) are produced and travel through the various layers of the detector and produce signals. The hodoscope was successfully used during the last data taking period at CERN. The necessary time resolution to discriminate between particles travelling through the detector from outside and particles produced in the center of the detector was achieved by the use of waveform digitisers and software constant fraction discrimination. The disadvantage of this readout scheme was the slow readout speed, which was improved by two orders of magnitude. This was done by omitting the digitisers and replacing them with TDCs reading out the digital time-over-threshold (ToT) signal using leading edge discrimination.
format	Preprint
id	arxiv_https___arxiv_org_abs_2204_11572
institution	arXiv
publishDate	2022
record_format	arxiv
spellingShingle	Upgrade of ASACUSA's Antihydrogen Detector Kraxberger, V. Amsler, C. Breuker, H. Chesnevskaya, S. Costantini, G. Ferragut, R. Giammarchi, M. Gligorova, A. Gosta, G. Higaki, H. Hunter, E. D. Killian, C. Kletzl, V. Kuroda, N. Lanz, A. Leali, M. Mäckel, V. Maero, G. Malbrunot, C. Mascagna, V. Matsuda, Y. Migliorati, S. Murtagh, D. J. Nagata, Y. Nanda, A. Nowak, L. Pasino, E. Romé, M. Simon, M. C. Tajima, M. Toso, V. Ulmer, S. Venturelli, L. Weiser, A. Widmann, E. Wolz, T. Yamazaki, Y. Zmeskal, J. Instrumentation and Detectors Nuclear Experiment The goal of the ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) CUSP experiment at CERN's Antiproton Decelerator is to measure the ground state hyperfine splitting of antihydrogen in order to test whether CPT invariance is broken. The ASACUSA hodoscope is a detector consisting of two layers of 32 plastic scintillator bars individually read out by two serially connected silicon photo multipliers (SiPMs) on each end. Two additional layers for position resolution along the beam axis were scintillator fibres, which will now be replaced by scintillating tiles placed onto the existing bars and also read out by SiPMs. If the antiproton of antihydrogen annihilates in the center of the hodoscope, particles (mostly pions) are produced and travel through the various layers of the detector and produce signals. The hodoscope was successfully used during the last data taking period at CERN. The necessary time resolution to discriminate between particles travelling through the detector from outside and particles produced in the center of the detector was achieved by the use of waveform digitisers and software constant fraction discrimination. The disadvantage of this readout scheme was the slow readout speed, which was improved by two orders of magnitude. This was done by omitting the digitisers and replacing them with TDCs reading out the digital time-over-threshold (ToT) signal using leading edge discrimination.
title	Upgrade of ASACUSA's Antihydrogen Detector
topic	Instrumentation and Detectors Nuclear Experiment
url	https://arxiv.org/abs/2204.11572