@article {78,
	title = {Antihydrogen synthesis in a double-CUSP trap towards test of the CPT-symmetry},
	journal = {Hyperfine Interactions},
	volume = {237},
	year = {2016},
	pages = {156},
	abstract = {<p>The aim of the ASACUSA-CUSP experiment at CERN is to produce a cold, polarised antihydrogen beam and perform a high precision measurement of the ground-state hyperfine transition frequency of the antihydrogen atom and compare it with that of the hydrogen atom using the same spectroscopic beam line. Towards this goal a significant step was successfully accomplished: synthesised antihydrogen atoms have been produced in a CUSP magnetic configuration and detected at the end of our spectrometer beam line in 2012 [1]. During a long shut down at CERN the ASACUSA-CUSP experiment had been renewed by introducing a new double-CUSP magnetic configuration and a new semi-cylindrical tracking detector (AMT) [2], and by improving the transport feature of low energy antiproton beams. The new tracking detector monitors the antihydrogen synthesis during the mixing cycle of antiprotons and positrons. In this work the latest results and improvements of the antihydrogen synthesis will be presented including highlights from the last beam time.</p>
},
	issn = {1572-9540},
	doi = {10.1007/s10751-016-1368-4},
	url = {http://dx.doi.org/10.1007/s10751-016-1368-4},
	author = {Radics, B. and Ishikawa, S. and Kuroda, N. and Murtagh, D. J. and Nagata, Y. and Tajima, M. and Van Gorp, S. and Abo, Y. and Dupre, P. and Higashi, Y. and Kaga, C. and Leali, M. and Mascagna, V. and Venturelli, L. and Zurlo, N. and Breuker, H. and Higaki, H. and Kanai, Y. and Rizzini, E. Lodi and Matsuda, Y. and Ulmer, S. 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 {50,
	title = {Antihydrogen atom formation in a CUSP trap towards spin polarized beams},
	journal = {Hyperfine Interactions},
	volume = {212},
	year = {2012},
	pages = {31-40},
	keywords = {Antihydrogen, Atomic beam, CPT invariance, Rydberg atom},
	issn = {0304-3843},
	doi = {10.1007/s10751-012-0646-z},
	url = {http://dx.doi.org/10.1007/s10751-012-0646-z},
	author = {Kuroda, N. and Enomoto, Y. and Michishio, K. and Kim, C.H. and Higaki, H. and Nagata, Y. and Kanai, Y. and Torii, H.A. and Corradini, M. and Leali, M. and Lodi-Rizzini, E. and Venturelli, L. and Zurlo, N. and Fujii, K. and Ohtsuka, M. and Tanaka, K. and Imao, H. and Nagashima, Y. and Matsuda, Y. and Juhasz, B. and Widmann, E. and Mohri, A. and Yamazaki, Y.}
}
@article {22,
	title = {Synthesis of Cold Antihydrogen in a Cusp Trap},
	journal = {Physical Review LettersPhys. Rev. Lett.},
	volume = {105},
	year = {2010},
	month = {2010/12/07/},
	pages = {243401 -},
	url = {http://link.aps.org/doi/10.1103/PhysRevLett.105.243401},
	author = {Enomoto, Y. and Kuroda, N. and Michishio, K. and Kim, C. H. and Higaki, H. and Nagata, Y. and Kanai, Y. and Torii, H. A. and Corradini, M. and Leali, M. and Lodi-Rizzini, E. and Mascagna, V. and Venturelli, L. and Zurlo, N. and Fujii, K. and Ohtsuka, M. and Tanaka, K. and Imao, H. and Nagashima, Y. and Matsuda, Y. and Juhasz, B. and Mohri, A. and Yamazaki, Y.}
}
