@article {80,
	title = {Towards measuring the ground state hyperfine splitting of antihydrogen {\textendash} a progress report},
	journal = {Hyperfine Interactions},
	volume = {237},
	year = {2016},
	month = {Jun},
	pages = {103},
	abstract = {We report the successful commissioning and testing of a dedicated field-ioniser chamber for measuring principal quantum number distributions in antihydrogen as part of the ASACUSA hyperfine spectroscopy apparatus. The new chamber is combined with a beam normalisation detector that consists of plastic scintillators and a retractable passivated implanted planar silicon (PIPS) detector.},
	issn = {1572-9540},
	doi = {10.1007/s10751-016-1309-2},
	url = {https://doi.org/10.1007/s10751-016-1309-2},
	author = {Sauerzopf, C. and Capon, A. A. and Diermaier, M. and Dupre, P. and Higashi, Y. and Kaga, C. and Kolbinger, B. and Leali, M. and Lehner, S. and Rizzini, E. Lodi and Malbrunot, C. and Mascagna, V. and Massiczek, O. and Murtagh, D. J. and Nagata, Y. and Radics, B. and Simon, M. C. and Suzuki, K. and Tajima, M. and Ulmer, S. and Vamosi, S. and Gorp, S. van and Zmeskal, J. and Breuker, H. and Higaki, H. and Kanai, Y. and Kuroda, N. and Matsuda, Y. and Venturelli, L. and Widmann, E. and Yamazaki, Y.}
}
@article {75,
	title = {The ASACUSA CUSP: an antihydrogen experiment},
	journal = {Hyperfine Interactions},
	volume = {235},
	year = {2015},
	pages = {13{\textendash}20},
	abstract = {In order to test CPT symmetry between antihydrogen and its counterpart hydrogen, the ASACUSA collaboration plans to perform high precision microwave spectroscopy of ground-state hyperfine splitting of antihydrogen atom in-flight. We have developed an apparatus ({\textquoteleft}{\textquoteleft}cusp trap{\textquoteright}{\textquoteright}) which consists of a superconducting anti-Helmholtz coil and multiple ring electrodes. For the preparation of slow antiprotons and positrons, Penning-Malmberg type traps were utilized. The spectrometer line was positioned downstream of the cusp trap. At the end of the beamline, an antihydrogen beam detector was located, which comprises an inorganic Bismuth Germanium Oxide (BGO) single-crystal scintillator housed in a vacuum duct and surrounding plastic scintillators. A significant fraction of antihydrogen atoms flowing out the cusp trap were detected.},
	issn = {1572-9540},
	doi = {10.1007/s10751-015-1205-1},
	url = {http://dx.doi.org/10.1007/s10751-015-1205-1},
	author = {Kuroda, N. and Ulmer, S. and Murtagh, D. J. and Gorp, S. and Nagata, Y. and Diermaier, M. and Federmann, S. and Leali, M. and Malbrunot, C. and Mascagna, V. and Massiczek, O. and Michishio, K. and Mizutani, T. and Mohri, A. and Nagahama, H. and Ohtsuka, M. and Radics, B. and Sakurai, S. and Sauerzopf, C. and Suzuki, K. and Tajima, M. and Torii, H. A. and Venturelli, L. and W{\"u}nschek, B. and Zmeskal, J. and Zurlo, N. and Higaki, H. and Kanai, Y. and Rizzini, E. Lodi and Nagashima, Y. and Matsuda, Y. and Widmann, E. and Yamazaki, Y.}
}
@article {56,
	title = {A source of antihydrogen for in-flight hyperfine spectroscopy},
	journal = {Nat Commun},
	volume = {5},
	year = {2014},
	month = {21/01/2014},
	abstract = {<p>Antihydrogen, a positron bound to an antiproton, is the simplest antiatom. Its counterpart{\textemdash}hydrogen{\textemdash}is one of the most precisely investigated and best understood systems in physics research. High-resolution comparisons of both systems provide sensitive tests of CPT symmetry, which is the most fundamental symmetry in the Standard Model of elementary particle physics. Any measured difference would point to CPT violation and thus to new physics. Here we report the development of an antihydrogen source using a cusp trap for in-flight spectroscopy. A total of 80 antihydrogen atoms are unambiguously detected 2.7 m downstream of the production region, where perturbing residual magnetic fields are small. This is a major step towards precision spectroscopy of the ground-state hyperfine splitting of antihydrogen using Rabi-like beam spectroscopy.</p>
},
	url = {http://dx.doi.org/10.1038/ncomms4089},
	author = {Kuroda, N. and Ulmer, S. and Murtagh, D. J. and Van Gorp, S. and Nagata, Y. and Diermaier, M. and Federmann, S. and Leali, M. and Malbrunot, C. and Mascagna, V. and Massiczek, O. and Michishio, K. and Mizutani, T. and Mohri, A. and Nagahama, H. and Ohtsuka, M. and Radics, B. and Sakurai, S. and Sauerzopf, C. and Suzuki, K. and Tajima, M. and Torii, H. A. and Venturelli, L. and Wu{\textasciidieresis}nschek, B. and Zmeskal, J. and Zurlo, N. and Higaki, H. and Kanai, Y. and Lodi Rizzini, E. and Nagashima, Y. and Matsuda, Y. and Widmann, E. and Yamazaki, Y.}
}
@article {66,
	title = {Towards a spin polarized antihydrogen beam},
	journal = {Hyperfine Interactions},
	year = {2014},
	pages = {1-10},
	keywords = {Antihydrogen, Atomic beam, CPT invariance, Rydberg atom},
	issn = {0304-3843},
	doi = {10.1007/s10751-014-1016-9},
	url = {http://dx.doi.org/10.1007/s10751-014-1016-9},
	author = {Kuroda, N. and Ulmer, S. and Murtagh, D.J. and Van Gorp, S. and Nagata, Y. and Diermaier, M. and Federmann, S. and Leali, M. and Malbrunot, C. and Mascagna, V. and Massiczek, O. and Michishio, K. and Mizutani, T. and Mohri, A. and Nagahama, H. and Ohtsuka, M. and Radics, B. and Sakurai, S. and Sauerzopf, C. and Suzuki, K. and Tajima, M. and Torii, H.A. and Venturelli, L. and W{\"u}nschek, B. and Zmeskal, J. and Zurlo, N. and Higaki, H. and Kanai, Y. and Lodi-Rizzini, E. and Nagashima, Y. and Matsuda, Y. and Widmann, E. and Yamazaki, Y.}
}
@article {54,
	title = {Measurement of the hyperfine structure of antihydrogen in a beam},
	journal = {Hyperfine Interactions},
	volume = {215},
	year = {2013},
	pages = {1-8},
	keywords = {Antihydrogen, CPT, Precision spectroscopy},
	issn = {0304-3843},
	doi = {10.1007/s10751-013-0809-6},
	url = {http://dx.doi.org/10.1007/s10751-013-0809-6},
	author = {Widmann, E. and Diermaier, M. and Juhasz, B. and Malbrunot, C. and Massiczek, O. and Sauerzopf, C. and Suzuki, K. and W{\"u}nschek, B. and Zmeskal, J. and Federmann, S. and Kuroda, N. and Ulmer, S. and Yamazaki, Y.}
}
