@article {89,
	title = {Imaging antimatter with a Micromegas detector},
	journal = {Nuclear Inst. and Methods in Physics Research, B},
	volume = {422},
	year = {2018},
	pages = {1{\textendash}6},
	abstract = {<p>The ASACUSA collaboration aims at measuring the ground state hyperfine splitting of antihydrogen for probing fundamental symmetries. A cryogenic trap for mixing antiprotons and positrons serves as an antihydrogen source for in-flight spectroscopy. In order to be able to monitor the antihydrogen formation process, a dedicated Micromegas tracking detector has been designed and built to record the annihilation distribution in the trap. In this paper, we present the first results from antiproton annihilation data recorded with the Micromegas, together with a description of the event reconstruction algorithm.</p>
},
	keywords = {3D tracking, Annihilation, Antiproton, Micromegas tracker, Track reconstruction},
	issn = {0168-583X},
	doi = {10.1016/j.nimb.2018.02.026},
	url = {https://doi.org/10.1016/j.nimb.2018.02.026},
	author = {M{\"a}ckel, V and Radics, B and Dupre, P and Higaki, H and Kanai, Y and Kuroda, N and Matsuda, Y and Nagata, Y and Tajima, M and Widmann, E and Yamazaki, Y}
}
@article {79,
	title = {In-beam measurement of the hydrogen hyperfine splitting - towards antihydrogen spectroscopy},
	journal = {Nature Communications},
	volume = {8},
	year = {2017},
	month = {12/06/2017},
	pages = {1{\textendash}9},
	abstract = {<p>Antihydrogen, the lightest atom consisting purely of antimatter, is an ideal laboratory to study the CPT symmetry by comparison to hydrogen. With respect to absolute precision, transitions within the ground-state hyperfine structure (GS-HFS) are most appealing by virtue of their small energy separation. ASACUSA proposed employing a beam of cold antihydrogen atoms in a Rabi-type experiment to determine the GS-HFS in a field-free region. Here we present a measurement of the zero-field hydrogen GS-HFS using the spectroscopy apparatus of ASACUSA{\textquoteright}s antihydrogen experiment. The measured value of {\$}\backslashnu{\_}\backslashmathrm{\{}HF{\}}{\$}={\$}1{\~{}}420{\~{}}405{\~{}}748.4(3.4)(1.6){\~{}}\backslashtextrm{\{}Hz{\}}{\$} with a relative precision of {\$}\backslashDelta{\$}{\$}\backslashnu{\_}\backslashmathrm{\{}HF{\}}{\$}/{\$}\backslashnu{\_}\backslashmathrm{\{}HF{\}}{\$}={\$}2.7\backslashtimes10{\^{}}{\{}-9{\}}{\$} constitutes the most precise determination of this quantity in a beam and verifies the developed spectroscopy methods for the antihydrogen HFS experiment to the ppb level. Together with the recently presented observation of antihydrogen atoms {\$}2.7{\~{}}\backslashtextrm{\{}m{\}}{\$} downstream of the production region, the prerequisites for a measurement with antihydrogen are now available within the ASACUSA collaboration.</p>
},
	doi = {10.1038/ncomms15749},
	url = {https://doi.org/10.1038/ncomms15749},
	author = {Diermaier, M. and Jepsen, C. B. and Kolbinger, B. and Malbrunot, C. and Massiczek, O. and Sauerzopf, C. and Simon, M. C. and Zmeskal, J. and Widmann, E.}
}
@article {74,
	title = {Intelligent Front-end Electronics for Silicon photodetectors (IFES)},
	journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
	volume = {819},
	year = {2016},
	pages = {163 - 166},
	abstract = {Abstract While high channel density can be easily achieved for big experiments using custom made microchips, providing something similar for small and medium size experiments imposes a challenge. Within this work we describe a novel and cost effective solution to operate silicon photodetectors such as silicon photo multipliers (SiPM). The {\.I}FES\} modules provide the bias voltage for the detectors, a leading edge discriminator featuring time over threshold and a differential amplifier, all on one printed circuit board. We demonstrate under realistic conditions that the module is usable for high resolution timing measurements exploiting both charge and time information. Furthermore we show that the modules can be easily used in larger detector arrays. All in all this confirms that the {\.I}FES\} modules are a viable option for a broad range of experiments if cost-effectiveness and small form factor are required.},
	keywords = {Silicon photomultiplier},
	issn = {0168-9002},
	doi = {http://dx.doi.org/10.1016/j.nima.2016.02.098},
	url = {http://www.sciencedirect.com/science/article/pii/S0168900216300158},
	author = {Clemens Sauerzopf and Lukas Gruber and Ken Suzuki and Johann Zmeskal and Eberhard Widmann}
}
@article {19,
	title = {Ionization of Helium and Argon by Very Slow Antiproton Impact},
	journal = {Physical Review LettersPhys. Rev. Lett.},
	volume = {101},
	year = {2008},
	month = {2008/07/25/},
	pages = {043201 -},
	url = {http://link.aps.org/doi/10.1103/PhysRevLett.101.043201},
	author = {Knudsen, H. and Kristiansen, H.-P. E. and Thomsen, H. D. and Uggerh{\o}j, U. I. and Ichioka, T. and M{\o}ller, S. P. and Hunniford, C. A. and McCullough, R. W. and Charlton, M. and Kuroda, N. and Nagata, Y. and Torii, H. A. and Yamazaki, Y. and Imao, H. and Andersen, H. H. and T{\"o}kesi, K.}
}
