@article {96,
	title = {Upgrade of ASACUSA{\textquoteright}s antihydrogen detector},
	journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
	volume = {1045},
	year = {2023},
	pages = {167568},
	abstract = {The goal of the ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) CUSP experiment at CERN{\textquoteright}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 photomultipliers (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 centre 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 centre 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.},
	keywords = {Antihydrogen, antimatter, Data acquisition, Silicon photomultiplier},
	issn = {0168-9002},
	doi = {https://doi.org/10.1016/j.nima.2022.167568},
	url = {https://www.sciencedirect.com/science/article/pii/S0168900222008609},
	author = {V. Kraxberger and C. Amsler and H. Breuker and S. Chesnevskaya and G. Costantini and R. Ferragut and M. Giammarchi and A. Gligorova and G. Gosta and H. Higaki and E.D. Hunter and C. Killian and V. Kletzl and N. Kuroda and A. Lanz and M. Leali and V. M{\"a}ckel and G. Maero and C. Malbrunot and V. Mascagna and Y. Matsuda and S. Migliorati and D.J. Murtagh and Y. Nagata and A. Nanda and L. Nowak and E. Pasino and M. Rom{\'e} and M.C. Simon and M. Tajima and V. Toso and S. Ulmer and L. Venturelli and A. Weiser and E. Widmann and T. Wolz and Y. Yamazaki and J. Zmeskal}
}
@article {92,
	title = {Antiproton beams with low energy spread for antihydrogen production},
	journal = {Journal of Instrumentation},
	volume = {14},
	year = {2019},
	month = {05/2019},
	pages = {P05009{\textendash}P05009},
	abstract = {<p>A low energy antiproton transport from the ASACUSA{\textquoteright}s antiproton accumulation trap (MUSASHI trap) to the antihydrogen production trap (double cusp trap) is developed. The longitudinal antiproton energy spread after the transport line is 0.23{\textpm}0.02 eV, compared with 15 eV with a previous method used in 2012. This reduction is achieved by an adiabatic transport beamline with several pulse-driven coaxial coils. Antihydrogen atoms are synthesized by directly injecting the antiprotons into a positron plasma, resulting in the higher production rate.</p>
},
	doi = {10.1088/1748-0221/14/05/p05009},
	url = {https://doi.org/10.1088\%2F1748-0221\%2F14\%2F05\%2Fp05009},
	author = {M. Tajima and N. Kuroda and C. Amsler and H. Breuker and C. Evans and M. Fleck and A. Gligorova and H. Higaki and Y. Kanai and B. Kolbinger and A. Lanz and M. Leali and V. M{\"a}ckel and C. Malbrunot and V. Mascagna and Y. Matsuda and D. Murtagh and Y. Nagata and A. Nanda and B. Radics and M. Simon and S. Ulmer and L. Venturelli and E. Widmann and M. Wiesinger and Y. Yamazaki}
}
@article {90,
	title = {Monte-Carlo based performance assessment of ASACUSA{\textquoteright}s antihydrogen detector},
	journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
	volume = {910},
	year = {2018},
	pages = {90 - 95},
	abstract = {<p>An antihydrogen detector consisting of a thin BGO disk and a surrounding plastic scintillator hodoscope has been developed. We have characterized the two-dimensional positions sensitivity of the thin BGO disk and energy deposition into the BGO was calibrated using cosmic rays by comparing experimental data with Monte-Carlo simulations. The particle tracks were defined by connecting BGO hit positions and hits on the surrounding hodoscope scintillator bars. The event rate was investigated as a function of the angles between the tracks and the energy deposition in the BGO for simulated antiproton events, and for measured and simulated cosmic ray events. Identification of the antihydrogen Monte Carlo events was performed using the energy deposited in the BGO and the particle tracks. The cosmic ray background was limited to 12\&nbsp;mHz with a detection efficiency of 81\%. The signal-to-noise ratio was improved from 0.22\&nbsp;s-1/2 obtained with the detector in 2012 to 0.26\&nbsp;s-1/2 in this work.</p>
},
	keywords = {Antihydrogen, antimatter, Calorimeter, Detector, Tracker},
	issn = {0168-9002},
	doi = {10.1016/j.nima.2018.09.013},
	url = {http://www.sciencedirect.com/science/article/pii/S0168900218311227},
	author = {Y. Nagata and N. Kuroda and B. Kolbinger and M. Fleck and C. Malbrunot and V. M{\"a}ckel and C. Sauerzopf and M.C. Simon and M. Tajima and J. Zmeskal and H. Breuker and H. Higaki and Y. Kanai and Y. Matsuda and S. Ulmer and L. Venturelli and E. Widmann and Y. Yamazaki}
}
@article {84,
	title = {Measurements and 3D Reconstruction of Antimatter Annihilations with the ASACUSA Micromegas Tracker},
	journal = {JPS Conf. Proc.},
	volume = {18},
	year = {2017},
	pages = {011010},
	doi = {10.7566/JPSCP.18.011010},
	author = {B. Radics and H. Breuker and P. Dupre and Y. Higashi and C. Kaga and M. Leali and E. Lodi Rizzini and V. Mascagna and T. Matsudate and D. J. Murtagh and M. Tajima and H. A. Torii and S. Van Gorp and H. Higaki and Y. Kanai and N. Kuroda and Y. Matsuda and S. Ulmer and L. Venturelli and Y. Yamazaki}
}
@article {81,
	title = {Progress of Antihydrogen Beam Production Using a Double Cusp Trap},
	journal = {JPS Conf. Proc.},
	volume = {18},
	year = {2017},
	pages = {011007},
	doi = {10.7566/JPSCP.18.011007},
	author = {Y. Nagata and N. Kuroda and P. Dupre and B. Radics and M. Tajima and A. A. Capon and M. Diermaier and C. Kaga and B. Kolbinger and M. Leali and E. Lodi Rizzini and C. Malbrunot and V. Mascagna and O. Massiczek and T. Matsudate and C. Sauerzopf and M. C. Simon and K. Suzuki and J. Zmeskal and H. Breuker and H. Higaki and Y. Kanai and Y. Matsuda and S. Ulmer and L. Venturelli and E. Widmann and Y. Yamazaki}
}
@article {35,
	title = {Towards the production of anti-hydrogen beams},
	journal = {AIP Conference Proceedings},
	volume = {1521},
	year = {2013},
	pages = {134-143},
	keywords = {antimatter, atomic beams, hydrogen neutral atoms, hyperfine structure, particle beam diagnostics},
	doi = {10.1063/1.4796069},
	url = {http://link.aip.org/link/?APC/1521/134/1},
	author = {H. Higaki and Y. Enomoto and N. Kuroda and K. Michishio and D. J. Murtagh and S. Ulmer and S. Van Gorp and C. H. Kim and Y. Nagata and Y. Kanai and Torii, H.A. and M. Corradini and M. Leali and E. Lodi-Rizzini and V. Mascagna and L. Venturelli and N. Zurlo and K. Fujii and M. Otsuka and K. Tanaka and H. Imao and Y. Nagashima and Y. Matsuda and B. Juh{\'a}sz and A. Mohri and Y. Yamazaki},
	editor = {Xabier Sarasola and Lutz Schweikhard and Thomas Sunn Pedersen}
}
