@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}
}
